SECTION 5: ACCESSORIES
WARNING Installing unapproved accessories may cause machine to malfunction, resulting in serious personal injury or machine damage. To reduce this risk, only install accessories recommended for this machine by Grizzly.
NOTICE Refer to our website or latest catalog for additional recommended accessories.
T21151—8" SELF-TEST® HSS System H5143—8" SELF-TEST® Cobalt System (Includes 1 Set Knife Holders & 4 Double-Edge HSS "Dispoz-A-Blade" Knives) Knife changes are as easy as snapping the disposable double-edge knife onto the SELF-TEST® holder and sliding the holder and knife into the knife pocket until the precisely located stops contact the outside surface of your jointer's cutterhead. The time it takes to change knives has now been reduced to the time needed to loosen the cutterhead gib bolts, replace the dull edge and re-tighten. Unique to the industry, the SELF-TEST® knife installs in your ordinary stock cutterhead eliminating the need to buy and install a special costly cutterhead, which is required by every other quick change knife system!
Figure 39. Dispoz-A-Blade® Holder and Knife.
H2499—Small Half-Mask Respirator H3631—Medium Half-Mask Respirator H3632—Large Half-Mask Respirator H3635—Cartridge Filter Pair P100 Wood dust has been linked to nasal cancer and severe respiratory illnesses. If you work around dust everyday, a half-mask respirator can be a lifesaver. Also compatible with safety glasses!
Figure 40. Half-mask respirator with disposable cartridge filters.
Recommended Metal Protectants G5562—SLIPIT® 1 Qt. Gel G5563—SLIPIT® 12 Oz. Spray G2871—Boeshield® T-9 12 Oz. Spray G2870—Boeshield® T-9 4 Oz. Spray H3788—G96® Gun Treatment 12 Oz. Spray H3789—G96® Gun Treatment 4.5 Oz. Spray
Figure 41. Recommended products for protecting unpainted cast iron/steel part on machinery.
order online at www.grizzly.com or call 1-800-523-4777 -32- Model G0490/G0490X (Mfd. Since 8/12)
SECTION 6: MAINTENANCE
WARNING
To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, maintenance, or service.
Schedule
For optimum performance from your machine, follow this maintenance schedule and refer to any specific instructions given in this section.
Daily
- Vacuum all dust on and around the machine.
- Wipe down the tables and all other unpainted cast iron with a metal protectant.
- Check/repair for worn or damaged wires.
- Check/replace damaged cutterhead or blades/inserts.
- Check/retighten loose mounting bolts.
- Check/resolve any other unsafe condition.
Monthly
- V-belt tension, damage, or wear (Page 36).
- Clean/vacuum dust buildup from inside stand and off of motor.
Cleaning & Protecting
Cleaning the Model G0490/G0490X is relatively easy. Vacuum excess wood chips and sawdust, and wipe off the remaining dust with a dry cloth. If any resin has built up, use a resin-dissolving cleaner to remove it.
Protect the unpainted cast iron surfaces on the table by wiping the table clean after every use—this ensures moisture from wood dust does not remain on bare metal surfaces.
Keep tables rust-free with regular applications of products like G96® Gun Treatment, SLIPIT®, or Boeshield® T-9 (see Page 32).
Lubrication
Since all bearings are sealed and permanently lubricated, simply leave them alone until they need to be replaced. DO NOT lubricate them.
Table ways and the fence assembly should not be lubricated. If the tables appear to be stuck, disassemble and clean any foreign materials from the ways, then re-assemble.
SECTION 7: SERVICE
Review the troubleshooting and procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather the serial number and manufacture date of your machine before calling.
Troubleshooting
\begin{tabular}{|p{0.22\textwidth}|p{0.33\textwidth}|p{0.33\textwidth}|} \hline \textbf{Symptom} & \textbf{Possible Cause} & \textbf{Possible Solution} \ \hline Motor will not start. & 1. STOP button depressed. \newline 2. Thermal overload protection tripped in magnetic switch. \newline 3. Low voltage. \newline 4. Open circuit in motor or loose connections. & 1. Twist STOP button clockwise until it pops out. \newline 2. Press "Reset" button on thermal overload relay, located inside magnetic switch. \newline 3. Check power line for proper voltage. \newline 4. Inspect all lead connections on motor for loose or open connections (\textbf{Page 47}). \ \hline Fuses or circuit breakers blow. & 1. Short circuit in line cord or plug. \newline 2. Circuit breaker at fault. & 1. Repair or replace cord or plug for damaged insulation and shorted wires. \newline 2. Replace circuit breaker. \ \hline Motor overheats. & 1. Motor overloaded during operation. \newline 2. Air circulation through the motor restricted. & 1. Reduce load on motor; take lighter cuts. \newline 2. Clean off motor to provide normal air circulation. \ \hline Motor stalls or shuts off during a cut. & 1. Motor overloaded during operation. \newline 2. Thermal overload protection tripped in magnetic switch. \newline 3. Short circuit on motor or in wiring. \newline 4. Circuit breaker tripped. & 1. Reduce load on motor; take lighter cuts. \newline 2. Press the "Reset" button on thermal overload relay, located inside magnetic switch. \newline 3. Repair or replace wiring connections on motor (\textbf{Page 47}). \newline 4. Install correct circuit breaker; reduce # of machines running on that circuit (circuit overload). \ \hline Blade slows when cutting or makes a squealing noise, especially on start-up. & 1. V-belt loose. \newline 2. V-belt worn out. & 1. Retension V-belt (\textbf{Page 36}). \newline 2. Replace V-belt (\textbf{Page 36}). \ \hline Loud repetitious noise coming from machine. & 1. Pulley set screws or keys are missing or loose. \newline 2. Motor fan is hitting the cover. \newline 3. V-belt is damaged. & 1. Inspect keys and set screws. Replace or tighten if necessary. \newline 2. Adjust fan cover mounting position, tighten fan, or shim fan cover. \newline 3. Replace V-belt (\textbf{Page 36}). \ \hline Vibration when running or cutting. & 1. Loose or damaged blade. \newline 2. Damaged V-belt. \newline 3. Worn cutterhead bearings. & 1. Tighten or replace blade. \newline 2. Replace (\textbf{Page 36}). \newline 3. Check/replace cutterhead bearings. \ \hline Tables are hard to adjust. & 1. Table lock is engaged or partially engaged. \newline 2. Table stops blocking movement. & 1. Completely loosen table lock. \newline 2. Loosen/reset table stops (\textbf{Pages 43 & 44}). \ \hline Excessive snipe (gouge in the end of the board that is uneven with the rest of the cut). & 1. Outfeed table is set too low. \newline 2. Operator pushing down on trailing end of the workpiece. & 1. Align outfeed table with cutterhead knife at top dead center (\textbf{Page 43}). \newline 2. Reduce/eliminate downward pressure on that end of workpiece. \ \hline \end{tabular}
-34- Model G0490/G0490X (Mfd. Since 8/12)

| Symptom | Possible Cause | Possible Solution |
|---|---|---|
| Workpiece stops in the middle of the cut. | 1. Outfeed table is set too high. | 1. Align outfeed table with cutterhead knife at top dead center (Page 43). |
| Chipping marks in workpiece. | 1. Knots or conflicting grain direction in wood.2. Nicked or chipped blades/inserts.3. Feeding workpiece too fast.4. Taking too deep of a cut. | 1. Inspect workpiece for knots and grain (Page 26); only use clean stock.2. Adjust one of the nicked knives sideways/rotate inserts; replace knives/inserts (Page 37).3. Slow down the feed rate.4. Take a smaller depth of cut. (Always reduce cutting depth when surface planing or working with hard woods.) |
| Fuzzy grain in workpiece. | 1. Wood may have high moisture content or surface wetness.2. Dull knives/inserts. | 1. Check moisture content and allow to dry if moisture is too high.2. Replace knives/rotate or replace inserts (Pages 37). |
| Long lines or ridges that run along the length of the board. | 1. Nicked or chipped knives/inserts. | 1. Adjust one of the nicked knives sideways/rotate inserts; replace knives/inserts (Pages 37). |
| Uneven cutter marks, wavy surface, or chatter marks across the face of the board. | 1. Feeding workpiece too fast.2. Knives not adjusted at even heights in the cutterhead (G0490 only). | 1. Slow down the feed rate.2. Adjust the knives so they are set up evenly in cutterhead (Page 37). |
| Board edge is concave or convex after jointing. | 1. Board not held with even pressure on infeed and outfeed table during cut.2. Board started too uneven.3. Board has excessive bow or twist along its length.4. Insufficient number of passes. | 1. Hold board with even pressure as it moves over cutterhead.2. Take partial cuts to remove the extreme high spots before doing a full pass.3. Surface plane one face so there is a good surface to position against fence.4. It may take 3 to 5 passes to achieve a perfect edge, depending on starting condition of board and depth of cut. |
Servicing Poly V-Belt
To ensure optimum power transmission from the motor to the cutterhead, the poly V-belt must be in good condition (free from cracks, fraying and wear) and properly aligned and tensioned.
Tool Needed
- Wrench or Socket 12mm ........ 1
- Wrench or Socket 13mm ........ 1
Aligning Pulleys
- DISCONNECT JOINTER FROM POWER!
- Visually check alignment of cutterhead and motor pulleys, as illustrated in Figure 42.
Figure 42. Pulleys aligned.
—If they are not aligned, loosen the four mounting carriage bolts shown in Figure 43, shift motor horizontally to align pulleys, then retighten carriage bolts.
Figure 43. Motor adjustment controls.
Replacing/Tensioning V-Belt
- DISCONNECT JOINTER FROM POWER!
- Loosen carriage bolts securing motor mounting brackets (see Figure 44).
Figure 44. Motor mounting carriage bolts.
- Have another person lift motor up as you replace V-belt. Make sure ribs of V-belt are seated in pulley grooves.
- Allow motor to slide down to tension V-belt.
Note: When properly tensioned, there is approximately 1/4" deflection of belt as moderate pressure is applied midway between the pulleys, as illustrated in Figure 45. If necessary, apply downward pressure on motor to attain proper belt tension.
Figure 45. Correct belt deflection when properly tensioned.
-36- Model G0490/G0490X (Mfd. Since 8/12)
Inspecting Knives (G0490)
I nspecting Knife Height
Use the knife-setting jig to verify that all cutterhead knives are all set to the correct height and protruding evenly from one side of the cutterhead to the other.
To inspect positioning of knives in cutterhead:
- DISCONNECT JOINTER FROM POWER!
- Remove cutterhead guard or block it open.
- Lower infeed table to 1/2" scale mark.
- Place knife jig on cutterhead, directly over a knife.
- Closely examine how jig touches cutterhead and knife. The knife is set correctly when, on each side of cutterhead, both legs of jig sit firmly on cutterhead body and middle pad of jig just touches top edge of knife.
—If the jig does not sit as described, then that knife must be reset. (Repeat this inspection with the other knives before resetting.)
CAUTION
The cutterhead knives are very sharp and can easily cut your fingers or hands. Wear heavy leather gloves and take great care when handling cutterhead knives to avoid personal injury.
Setting Knives (G0490)
Setting the knives correctly is crucial to the proper operation of the jointer and it plays an important role in keeping the knives sharp. If one knife is higher than the others, it will do the majority of the work, and thus, become dull much faster.
The knife jig included with the jointer is designed to set the knives at the correct height.
Figure 46. Profile of cutterhead with knives.
Tools Needed
- Knife Setting Gauge ........ 1
- Hex Wrench 2.5mm ........ 1
- Wrench 10mm ........ 1
To set cutterhead knives:
- DISCONNECT JOINTER FROM POWER!
- Remove cutterhead guard from table. Lower both tables as far as they go. This provides unrestricted access to cutterhead.
- From backside of jointer, remove cabinet cover to expose V-belt.
- Use V-belt to rotate cutterhead and position knives.
-
Loosen cutterhead gib bolts, starting in the middle, and alternating back and forth until all gib bolts are loose, but not falling out.
-
Position knife setting gauge over knife. Loosen gib bolts until knife is completely loose.
-
Access jack screws through holes in cutterhead. Using a hex wrench, rotate jack screws to raise or lower knife. When knife is set correctly, it will barely touch middle pad of gauge. Snug gib bolts just tight enough to hold knife in place. Repeat with remaining knives.
-
Rotate cutterhead to reveal the first knife you started with. Lightly snug all gib bolts, alternating from one side to the other, and working from the ends to the middle. Repeat with remaining knives.
-
Tighten each gib bolt in the same alternating manner as you did in previous step.
-
Set outfeed table even with the new knives at top-dead center (refer to Setting Outfeed Table Height on Page 43 for detailed instructions).
Cutterhead Inserts (G0490X)
The spiral cutterhead is equipped with indexable carbide inserts. Each insert can be rotated to reveal any one of its four cutting edges. Therefore, if one cutting edge becomes dull or damaged, simply rotate it 90° to reveal a fresh cutting edge as shown below.
Each insert has a reference dot on one corner. As the insert is rotated, the reference dot location can be used as an indicator of which edges are used and which are new. Replace insert when the reference dot has been used and rotated back to its starting position.
Reference Dot
-38- Model G0490/G0490X (Mfd. Since 8/12)
To rotate or replace spiral cutterhead insert:
-
DISCONNECT MACHINE FROM POWER!
-
Remove cutterhead guard from table, and lower infeed table as far as it will go, to provide access to cutterhead.
-
Remove cabinet bottom access panel to expose cutterhead pulley.
-
Rotate cutterhead pulley to provide access to insert(s) to be rotated/replaced.
-
Put on heavy leather gloves to protect fingers and hands.
-
Remove any sawdust or debris from head of insert, Torx screw, and surrounding area (see Figure).
-
Remove Torx screw and insert, then clean all dust and debris from both parts and pocket they were removed from.
Note: Proper cleaning of insert(s), Torx screw, and cutterhead pocket is critical to achieving a smooth finish. Dirt or dust trapped between insert and cutterhead will raise insert, and make marks on your workpiece when jointing.
Tip: Use low-pressure compressed air or vacuum nozzle to clean cutterhead pocket.
- Re-install insert so that a fresh cutting edge faces outward, making sure it is properly seated in cutterhead pocket.
—If all four insert cutting edges have been used, replace insert with a new one. Always position reference dot in same position when installing a new insert to aid in rotational sequencing.
- Lubricate Torx screw threads with a small amount of light machine oil, wipe excess off, and torque screw to 48–50 inch/pounds.
Note: If too much oil is applied to the threads, excess will attempt to squeeze out of threaded hole as you install insert and force it to raise slightly, making it out of alignment.
Checking/Adjusting Table Parallelism
If the tables are not parallel with the cutterhead or each other, then poor cutting results and kickback can occur.
Tools Needed
| Tools Needed | Qty |
|---|---|
| Straightedge | 1 |
| Wrench 17mm | 1 |
| Hex Wrench 8mm | 1 |
| Hex Wrench 4mm | 1 |
| Hex Wrench 3mm | 1 |
Checking Outfeed Table
-
DISCONNECT JOINTER FROM POWER!
-
Remove cutterhead guard, fence, and rear stand panel.
-
Loosen outfeed table lock located at front of the machine, and loosen jam nuts and positive stop bolts located at the back of machine just behind outfeed table (see Figure 47).

Figure 47. Outfeed table positive stop bolts.
- Rotate motor pulley so that you can access cutterhead body with straightedge between the knives/inserts, as shown in Figure 48.
Figure 48. Adjusting outfeed table even with cutterhead body (knife-style cutterhead shown).
-
Place straightedge on outfeed table so it hangs over cutterhead, then lower outfeed table until straightedge just touches cutterhead body.
-
Place straightedge in positions shown in Figure 49. In each position, straightedge should touch cutterhead and sit flat on outfeed table.
Black Lines Represent Straightedge Positions From Overhead View
Figure 49. Straightedge positions for verifying if outfeed table is parallel with cutterhead.
—If straightedge touches cutterhead body and sits flat across outfeed table in each position, then outfeed table is already parallel with cutterhead. Follow the Checking Infeed Table instructions on this page.
—If straightedge does not touch cutterhead and sits flat on outfeed table in any of the positions, then outfeed table is not parallel with cutterhead. Perform Adjusting Table Parallelism procedure on next page, then perform Checking Infeed Table instructions on this page.
Checking Infeed Table
-
Follow all steps for checking outfeed table parallelism to first make sure that outfeed table is parallel with cutterhead.
-
Correctly adjust the outfeed table height (refer to Setting Outfeed Table Height on Page 43 for detailed instructions).
-
Rotate cutterhead so knives/inserts will not interfere, then place straightedge infeed and outfeed tables and adjust infeed table even with outfeed table, as shown in Figure 50.
Figure 50. Infeed and outfeed tables set evenly (knife-style cutterhead shown).
- Place straightedge in the positions shown in Figure 51. In each position, straightedge should sit flat against both outfeed table and infeed table.
Black Lines Represent Straightedge Positions from Overhead View
Figure 51. Straightedge positions for checking infeed/outfeed table parallelism.
—If straightedge sits flat against both infeed and outfeed tables, then tables are parallel. Replace cutterhead guard, fence, and rear stand panel.
—If straightedge does not sit flat against both infeed and outfeed tables in any of positions, then follow Adjusting Table Parallelism instructions on the next page.
-40- Model G0490/G0490X (Mfd. Since 8/12)
Adjusting Table Parallelism
For safe and proper cutting results, the tables must be parallel to the cutterhead. Adjusting them to be parallel is a task of precision and patience, and may take up to one hour to complete. Luckily, this is considered a permanent adjustment and should not need to be repeated for the life of the machine.
Due to the complex nature of this task, we recommend that you double check the current table positions to make sure that they really need to be adjusted before starting.
Each table has four eccentric bushings on the base underneath the table that allow the table to be adjusted parallel. These eccentric bushings are locked in place by piggybacked set screws (one on top of the other) and adjust when these set screws are rotated.
The correct order for adjusting the table parallelism is to first adjust the outfeed table parallel with the cutterhead, then adjust the infeed table parallel with the outfeed table.
When setting the outfeed table, all measurements MUST be made from the cutterhead body—not the knives/inserts or the results may be skewed.
Important: The steps below are intended to be performed directly after the steps involved in checking the outfeed table parallelism. Do not continue until you have performed those steps.
To adjust table parallelism:
- Place straightedge on outfeed table so it hangs over cutterhead, and lower outfeed table until straightedge just touches cutterhead body, as shown in Figure 52.

Figure 52. Adjusting outfeed table even with cutterhead body (knife-style cutterhead shown).
- Remove top set screw from each of the four eccentric bushings under outfeed table, and loosen set screws underneath those removed set screws (see Figure 53).

Figure 53. Eccentric bushing and set screw location.
- Place straightedge in one of the positions shown in Figure 54, and adjust eccentric bushings so straightedge touches cutterhead body while lying flat across outfeed table (a pin-type spanner wrench or small hammer and punch may be necessary to turn eccentric bushings).
Figure 54. Straightedge positions for verifying if outfeed table is parallel with cutterhead.
-
Repeat Step 3 with each of remaining straight-edge positions as many times as necessary until outfeed table is parallel with cutterhead.
-
Tighten/replace set screws in eccentric bush-ings on outfeed table.
-
Remove set screw from each of the four eccentric bushings under infeed table, and loosen set screws underneath those removed set screws.
-
Place straightedge halfway across infeed and outfeed tables, and adjust infeed table even with outfeed table, as shown in Figure 55.
Figure 55. Infeed and outfeed tables set evenly (knife-style cutterhead shown).
- Place straightedge in one of the positions shown in Figure 56, and adjust eccentric bushings under infeed table so straightedge lies flat against both tables.
Figure 56. Straightedge positions for checking infeed/outfeed table parallelism.
-
Repeat Step 8 with each remaining straight-edge positions as many times as necessary until infeed table is parallel with outfeed table.
-
Tighten/replace set screws in eccentric bush-ings on infeed table.
-
Perform Setting Outfeed Table Height on next page.
-42- Model G0490/G0490X (Mfd. Since 8/12)
Setting Outfeed Table Height
The outfeed table height must be even with the top of the cutterhead knives. If the outfeed table is set too low, there will be snipe. If the outfeed table is set too high, the workpiece will hit the edge of the outfeed table during operation, increasing the chance of kickback.
Tools Needed
- Straightedge ........ 1
- Wrench 17mm ........ 1
- Hex Wrench 8mm ........ 1
- Hex Wrench 4mm ........ 1
- Hex Wrench 3mm ........ 1
- Feeler Gauge(s) 0.062" ........ 1
To set outfeed table height:
- DISCONNECT JOINTER FROM POWER!
- Remove cutterhead guard, fence, and rear stand panel.
- Knife-Style Cutterhead Only: Correctly set knife heights (refer to Setting Knives (G0490) on Page 37 for detailed instructions).
- Loosen outfeed table lock located at front of machine, and loosen jam nuts and positive stop bolts located at back of machine just behind outfeed table (see Figure 57).

Stop Bolts
Figure 57. Outfeed table positive stop bolts.
- Place straightedge on outfeed table so it extends over cutterhead.
- Use motor pulley to rotate cutterhead until one of the knives or inserts is at top dead center (its highest point during rotation), as illustrated in Figures 58–59.

Top Dead Center G0490 G0490X Top Dead Center
Figure 58. Knife or insert at top dead center.

Straightedge G0490 Outfeed Infeed Straightedge G0490X Outfeed Infeed
Figure 59. Using straightedge to check outfeed table height.
- Use outfeed table adjustment lever to set outfeed table so that knife or insert barely touches straightedge, as illustrated in Figure 59.
- Tighten outfeed table lock located at front of machine, and tighten positive stop bolts and jam nuts located at back of machine (see Figure 57) so that outfeed table will not move during operation.
- Reinstall cutterhead guard, fence, and rear stand panel.
Adjusting Infeed Table Stop Bolts
The infeed table on your jointer has positive stop bolts that, when properly set up, allow you to quickly adjust the infeed table to perform heavy or light cuts.
Each positive stop bolt controls top or bottom range of table movement (see Figure 60). Jam nuts lock positive stop bolts in position so they will not move during operation.

Figure 60. Positive stop bolts for infeed table.
Calibrating Depth Scale
The depth scale can be calibrated or "zeroed" to make sure the cutting depth shown on the scale matches the actual cutting depth (per pass).
Tools Needed
- Straightedge ........ 1
- Phillips Screwdriver ........ 1
To calibrate depth scale:
- DISCONNECT JOINTER FROM POWER!
- Set outfeed table height as described in Setting Outfeed Table Height on Page 43.
- Place a straightedge across infeed and outfeed tables.
- Adjust infeed table until it is level with outfeed table, as shown in Figure 61.

Figure 61. Infeed table even with outfeed table.
- Using a screwdriver, precisely adjust scale pointer to "0" (see Figure 62).

Figure 62. Depth scale pointer adjusted to "0".
-44- Model G0490/G0490X (Mfd. Since 8/12)
Setting Fence Stops
The fence stops simplify the task of adjusting the fence to 45° inward, 90°, and 45° outward (135°).
Tools Needed
- 45° Square ........ 1
- 90° Square ........ 1
- Sliding Bevel ........ 1
- Wrench 10mm ........ 1
- Hex Wrench 4mm ........ 1
Setting 45° Inward Fence Stop
- DISCONNECT JOINTER FROM POWER!
- Tilt fence approximately 45° inward onto stop bolt, as shown in Figure 63, then place 45° square against fence and table.
Figure 63. Fence adjusted 45° inward.
- Loosen jam nut on 45° inward stop bolt shown in Figure 64.
Figure 64. 45° inward positive stop bolt.
- Adjust stop bolt until fence is exactly 45° inward while resting on bolt (verify angle with a 45° square), then retighten jam nut loosened in Step 3.
Setting 90° Fence Stop
- DISCONNECT JOINTER FROM POWER!
- Loosen set screw in plunger lock collar shown in Figure 65, and loosen fence tilt lock.
Figure 65. Adjusting fence to 90°.
- Using a 90° square, adjust fence to 90° position, as shown in Figure 65, then tighten set screw in plunger lock collar.
- Adjust indicator (if necessary) to 0° to calibrate fence tilt scale.
Setting 45° Outward Fence Stop
- DISCONNECT JOINTER FROM POWER!
- Loosen fence tilt lock, and position fence against 45° outward stop bolt.
- Loosen jam nut on 45° outward fence stop bolt shown in Figure 66.
Figure 66. Adjusting fence 45° outward.
- Adjust 45° outward stop bolt until fence is exactly 45° outward while resting on bolt (check the angle with a sliding bevel set to 135°), then retighten jam nut loosened in Step 3.
SECTION 8: WIRING
These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Study this section carefully. If there are differences between your machine and what is shown in this section, call Technical Support at (570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine.
WARNING
Wiring Safety Instructions
SHOCK HAZARD. Working on wiring that is connected to a power source is extremely dangerous. Touching electrified parts will result in personal injury including but not limited to severe burns, electrocution, or death. Disconnect the power from the machine before servicing electrical components!
MODIFICATIONS. Modifying the wiring beyond what is shown in the diagram may lead to unpredictable results, including serious injury or fire. This includes the installation of unapproved aftermarket parts.
WIRE CONNECTIONS. All connections must be tight to prevent wires from loosening during machine operation. Double-check all wires disconnected or connected during any wiring task to ensure tight connections.
CIRCUIT REQUIREMENTS. You MUST follow the requirements at the beginning of this manual when connecting your machine to a power source.
WIRE/COMPONENT DAMAGE. Damaged wires or components increase the risk of serious personal injury, fire, or machine damage. If you notice that any wires or components are damaged while performing a wiring task, replace those wires or components.
MOTOR WIRING. The motor wiring shown in these diagrams is current at the time of printing but may not match your machine. If you find this to be the case, use the wiring diagram inside the motor junction box.
CAPACITORS/INVERTERS. Some capacitors and power inverters store an electrical charge for up to 10 minutes after being disconnected from the power source. To reduce the risk of being shocked, wait at least this long before working on capacitors.
EXPERIENCING DIFFICULTIES. If you are experiencing difficulties understanding the information included in this section, contact our Technical Support at (570) 546-9663.
NOTICE
The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com.
COLOR KEY
| BLACK | BLUE | YELLOW | LIGHT BLUE |
|---|---|---|---|
| Bk | Bl | Yl | Lb |
| WHITE | BROWN | YELLOW GREEN | BLUE WHITE |
|---|---|---|---|
| Wt | Br | Yg | Bw |
| GREEN | GRAY | PURPLE | TURQUOISE |
|---|---|---|---|
| Gn | Gy | Pu | Tu |
| RED | ORANGE | PINK |
|---|---|---|
| Rd | Or | Pk |
-46-
Model G0490/G0490X (Mfd. Since 8/12)

G0490/G0490X Wiring

Model G0490/G0490X (Mfd. Since 8/12) STOP READ ELECTRICAL SAFETY ON PAGE 46! -47-

G0490/G0490X Wiring Photos

Figure 67. Magnetic switch assembly.

Figure 68. Motor and capacitors.

Figure 69. Control panel.
-48- STOP READ ELECTRICAL SAFETY ON PAGE 46! Model G0490/G0490X (Mfd. Since 8/12)

SECTION 9: PARTS
Jointer Breakdown

Jointer Parts List
| REF | PART # | DESCRIPTION |
|---|---|---|
| 1 | P0490001 | KNOB M12-1.75, OBLONG |
| 2 | P0490002 | STUD-UDE M12-1.75 X 20, M10-1.5 X 15, 80L |
| 3 | P0490003 | BUSHING |
| 4 | P0490004 | ECCENTRIC SHAFT |
| 5 | P0490005 | SET SCREW M6-1 X 16 |
| 6 | P0490006 | SET SCREW M8-1.25 X 12 |
| 7 | P0490007 | FENCE CARRIAGE |
| 8 | P0490008 | HEX NUT M6-1 |
| 9 | P0490009 | HEX BOLT M6-1 X 25 |
| 12 | P0490012 | COLLAR |
| 13 | P0490013 | FENCE SUPPORT |
| 14 | P0490014 | FLAT WASHER 12MM |
| 15 | P0490015 | HEX NUT M12-1.75 |
| 16 | P0490016 | CAP SCREW M10-1.5 X 30 |
| 17 | P0490017 | FLAT WASHER 10MM |
| 18 | P0490018 | CAP SCREW M5-.8 X 16 |
| 19 | P0490019 | FENCE GIB |
| 20 | P0490020 | ECCENTRIC SHAFT |
| 21 | P0490021 | FLAT WASHER 8MM |
| 22 | P0490022 | HEX NUT M8-1.25 |
| 23 | P0490023 | SHAFT W/2 HOLES |
| 24 | P0490024 | CAP SCREW M8-1.25 X 30 |
| 25 | P0490025 | FLAT WASHER 6MM |
| 26 | P0490026 | POINTER |
| 27 | P0490027 | FLAT WASHER 6MM |
| 28 | P0490028 | PHLP HD SCR M6-1 X 16 |
| 29 | P0490029 | ADJUSTABLE HANDLE M10-1.5 X 25 |
| 30 | P0490030 | INDEX PIN ASSEMBLY |
| 31 | P0490031 | ROLL PIN 3 X 20 |
| 32 | P0490032 | COMPRESSION SPRING |
| 33 | P0490033 | HEX BOLT M6-1 X 25 |
| 34 | P0490034 | HEX NUT M6-1 |
| 35 | P0490035 | SWIVEL |
| 36 | P0490036 | LOCK COLLAR |
| 37 | P0490037 | HEX BOLT M8-1.25 X 12 |
| 38 | P0490038 | LOCK COLLAR |
| 39 | P0490039 | HEX BOLT M8-1.25 X 12 |
| 40 | P0490040 | CLAMP |
| 41 | P0490041 | THREADED CLAMP |
| 42 | P0490042 | TILT SCALE |
| 43 | P0490043 | PHLP HD SCR M6-1 X 10 |
| 44 | P0490044 | FLAT WASHER 6MM |
| 45 | P0490045 | KNOB M10-1.5, ROUND |
| 46 | P0490046 | STUD-DE M10-1.5 X 130, 10 |
| 47 | P0490047 | FENCE |
| 48 | P0490048 | SCALE |
| 49 | P0490049 | RIVET 2 X 4MM NAMEPLATE, STEEL |
| 50 | P0490050 | INFEED TABLE |
| 51 | P0490051 | TABLE SHAFT 202MM |
| 52 | P0490052 | EXTENSION TABLE |
| 53 | P0490053 | CAP SCREW M6-1 X 20 |
| 54 | P0490054 | CHIP DEFLECTOR |
| 55 | P0490055 | CAP SCREW M6-1 X 12 |
| REF | PART # | DESCRIPTION |
|---|---|---|
| 56 | P0490056 | CAP SCREW M8-1.25 X 80 |
| 57 | P0490057 | LOCK WASHER 8MM |
| 58 | P0490058 | FRONT BEARING PILLOW BLOCK |
| 59 | P0490059 | BALL BEARING 6004-2RS |
| 63 | P0490063 | KEY 6 X 6 X 35 |
| 67 | P0490067 | INT RETAINING RING 47MM |
| 68 | P0490068 | BALL BEARING 6005-2RS |
| 69 | P0490069 | REAR BEARING PILLOW BLOCK |
| 70V2 | P0490070V2 | CUTTERHEAD PULLEY ALUM V2.03.09 |
| 71 | P0490071 | CUTTERHEAD PULLEY WASHER |
| 72 | P0490072 | CAP SCREW M8-1.25 X 25 |
| 73 | P0490073 | CAP SCREW M8-1.25 X 80 |
| 74 | P0490074 | GUARD CLAMP |
| 75 | P0490075 | CUTTERHEAD GUARD |
| 77 | P0490077 | TORSION SPRING |
| 78 | P0490078 | ROLL PIN 3 X 16 |
| 79 | P0490079 | SPRING RETAINER |
| 80 | P0490080 | OUTFEED TABLE LIP |
| 81 | P0490081 | FLAT WASHER 6MM |
| 82 | P0490082 | CAP SCREW M6-1 X 20 |
| 83 | P0490083 | OUTFEED TABLE |
| 84 | P0490084 | SLOTTED PIN W/HOLE |
| 85 | P0490085 | BUMPER |
| 86 | P0490086 | LOCK WASHER 6MM |
| 87 | P0490087 | CAP SCREW M6-1 X 25 |
| 88 | P0490088 | TABLE BASE |
| 89 | P0490089 | RIVET 2 X 4MM NAMEPLATE, STEEL |
| 90 | P0490090 | HEIGHT SCALE |
| 91 | P0490091 | ADJUSTING SCREW M10-1.5 X 50 |
| 92 | P0490092 | HEX NUT M10-1.5 |
| 93 | P0490093 | SET SCREW M6-1 X 10 |
| 94 | P0490094 | SET SCREW M6-1 X 10 CONE-PT |
| 95 | P0490095 | ADJUSTING SCREW M10-1.5 X 110 |
| 96 | P0490096 | EXTENSION SPRING |
| 97 | P0490097 | SLOTTED PIN W/HOLE |
| 98 | P0490098 | CHIP BREAKER |
| 99 | P0490099 | FLAT WASHER 6MM |
| 100 | P0490100 | HEX BOLT M6-1 X 12 |
| 101 | P0490101 | FLAT WASHER 8MM |
| 102 | P0490102 | ADJUSTABLE HANDLE M8-1.25 X 30 |
| 103 | P0490103 | ECCENTRIC BUSHING |
| 104 | P0490104 | TABLE SHAFT 281MM |
| 105 | P0490105 | SET SCREW M8-1.25 X 16 |
| 106 | P0490106 | TABLE SHAFT 281MM |
| 107 | P0490107 | POINTER |
| 108 | P0490108 | ROLL PIN 3 X 10 |
| 109 | P0490109 | FLAT HD SCR M4-.7 X 10 |
| 110 | P0490110 | PIVOT BRACKET |
| 111 | P0490111 | ADJUSTING BLOCK |
| 112 | P0490112 | HEX NUT M12-1.75 |
| 113 | P0490113 | LEVER |
| 114 | P0490114 | KNOB M12-1.75, OBLONG |
| 115 | P0490115 | CAP SCREW M8-1.25 X 40 |
-50-
Model G0490/G0490X (Mfd. Since 8/12)
Jointer Parts List
| REF | PART # | DESCRIPTION |
|---|---|---|
| 116 | P0490116 | CLAMP PLATE |
| 117 | P0490117 | MEDIUM ADJUSTING SCREW |
| 118 | P0490118 | PUSH BLOCK |
| 119 | P0490119 | WRENCH 8 X 10MM OPEN-ENDS |
| 120 | P0490120 | WRENCH 12 X 14MM OPEN-ENDS |
| 121 | P0490121 | HEX WRENCH 2.5MM |
| 122 | P0490122 | HEX WRENCH 4MM |
| 123 | P0490123 | HEX WRENCH 5MM |
| 124 | P0490124 | HEX WRENCH 6MM |
| 125 | P0490125 | HEX WRENCH 8MM |
| 126 | P0490126 | EXT RETAINING RING 8MM |
| 127 | P0490127 | KNIFE JIG FOOT 1-PC |
| 128 | P0490128 | KNIFE JIG ROD |
| 129 | P0490129 | CONTROL PANEL BOX |
| REF | PART # | DESCRIPTION |
|---|---|---|
| 129-1V2 | P0490129-1V2 | CONTROL PANEL PEDESTAL ASSY V2.01.11 |
| 130V2 | P0490130V2 | E-STOP BUTTON NHD NLB22-R 22MM V2.01.11 |
| 131V2 | P0490131V2 | START BUTTON NHD NLB22-E 22MM V2.01.11 |
| 132 | P0490132 | CONTROL PANEL |
| 133 | P0490133 | TAP SCREW M4 X 8 |
| 134 | P0490134 | CONTROL PEDESTAL |
| 135 | P0490135 | FLANGE SCREW M6-1 X 12 |
| 136 | P0490136 | CAP SCREW M10-1.5 X 25 |
| 137 | P0490137 | LOCK WASHER 10MM |
| 138 | P0490138 | FLAT WASHER 10MM |
| 141 | P0490141 | KNIFE SETTING JIG ASSEMBLY |
| 142V2 | P0490142V2 | POWER CORD 12G 3W 72" 6-20P V2.08.12 |
| 143 | P0490143 | MOTOR CORD |
| 144 | P0490144 | CONTROL PANEL CORD |
G0490 Cutterhead Parts List
| REF | PART # | DESCRIPTION |
|---|---|---|
| 60 | P0490060 | SET SCREW M5-.8 X 16 |
| 61 | P0490061 | KNIFE LIFTER |
| 62 | P0490062 | CUTTERHEAD 8" 4-KNIFE |
| 64 | P0490064 | KNIVES 8" X 3/4" X 1/8" 4-PC SET |
| 65 | P0490065 | KNIFE GIB |
| 66 | P0490066 | KNIFE GIB SCREW |
G0490X Cutterhead Parts List
| REF | PART # | DESCRIPTION |
|---|---|---|
| 61 | P0490X061 | DRIVER BIT TORX T20 |
| 62 | P0490X062 | SPIRAL CUTTERHEAD 8" |
| 64 | P0490X064 | INDEXABLE INSERT 14 X 14 X 2 10-PK |
| 65 | P0490X065 | L-WRENCH TORX T20 |
| 66 | P0490X066 | FLAT HD TORX T20 M6-1 X 15 |
Stand Breakdown

-52- Model G0490/G0490X (Mfd. Since 8/12)
Stand Parts List
| REF | PART # | DESCRIPTION |
|---|---|---|
| 200 | P0490200 | PHLP HD SCR M5-.8 X 16 |
| 201 | P0490201 | FLAT WASHER 5MM |
| 202 | P0490202 | REAR PANEL |
| 203 | P0490203 | FLANGE SCREW M6-1 X 12 |
| 204 | P0490204 | BELT GUARD |
| 205 | P0490205 | STAND |
| 206 | P0490206 | FLAT WASHER 6MM |
| 207 | P0490207 | HEX NUT M6-1 |
| 208 | P0490208 | PHLP HD SCR M5-.8 X 16 |
| 209 | P0490209 | FLAT WASHER 5MM |
| 210 | P0490210 | DUST CHUTE |
| 211 | P0490211 | HEX NUT M8-1.25 |
| 212 | P0490212 | FLAT WASHER 8MM |
| 213 | P0490213 | SLEEVE |
| 214 | P0490214 | UNIVERSAL WHEEL 78MM DIA |
| 215 | P0490215 | HEX BOLT M8-1.25 X 65 |
| 216 | P0490216 | MOTOR BRACKET |
| 217 | P0490217 | FLANGE NUT 5/16-18 |
| 218 | P0490218 | CARRIAGE BOLT 5/16-18 X 3/4 |
| 219 | P0490219 | CARRIAGE BOLT 5/16-18 X 1-1/4 |
| 220 | P0490220 | FLAT WASHER 5/16 |
| 221 | P0490221 | HEX NUT 5/16-18 |
| 222 | P0490222 | ADJUSTABLE FOOT 3/8-16 X 1-3/4 |
| 223 | P0490223 | HEX NUT 3/8-16 |
| 224V2 | P0490224V2 | POLY V-BELT 8PK-1172 V2.03.09 |
| 225V2 | P0490225V2 | ALUMINIUM MOTOR PULLEY V2.03.09 |
| 226 | P0490226 | SET SCREW M6-1 X 6 |
| 227 | P0490227 | KEY 5 X 5 X 30 |
| 228 | P0490228 | MOTOR 3HP 240V 1-PH |
| 228-1 | P0490228-1 | MOTOR FAN COVER |
| 228-2 | P0490228-2 | MOTOR FAN |
| 228-4 | P0490228-4 | S CAPACITOR 200M 250V 1-3/4 X 3-1/4 |
| 228-5 | P0490228-5 | JUNCTION BOX |
| 228-6 | P0490228-6 | R CAPACITOR 30M 450V |
| 228-7 | P0490228-7 | BALL BEARING 6204ZZ |
| 228-8 | P0490228-8 | BALL BEARING 6203ZZ |
| 228-9 | P0490228-9 | CENT SWITCH 5/8-3450 |
| 228-10 | P0490228-10 | CONTACT PLATE |
| REF | PART # | DESCRIPTION |
|---|---|---|
| 229 | P0490229 | CAP SCREW M8-1.25 X 25 |
| 230 | P0490230 | LOCK WASHER 8MM |
| 231 | P0490231 | HEX NUT M6-1 |
| 232 | P0490232 | HEX NUT M5-.8 |
| 233 | P0490233 | FLAT WASHER 5MM |
| 234 | P0490234 | PHLP HD SCR M5-.8 X 20 |
| 235V2 | P0490235V2 | MAG SWITCH NHD 3HP 230V V2.01.11 |
| 235-1 | P0490235-1 | REAR MAG SWITCH COVER |
| 235-2V2 | P0490235-2V2 | CONTACTOR NHD C-09D 230V V2.07.12 |
| 235-3V2 | P0490235-3V2 | OL RELAY NHD NTH-17 14-17A V2.07.12 |
| 235-4 | P0490235-4 | FRONT MAG SWITCH COVER |
| 236 | P0490236 | CORD GROMMET |
| 237 | P0490237 | CAP SCREW M6-1 X 10 |
| 238 | P0490238 | FLAT WASHER 6MM |
| 239 | P0490239 | SWITCH MOUNTING PLATE |
| 241 | P0490241 | PHLP HD SCR M6-1 X 12 |
| 242 | P0490242 | EXT RETAINING RING 9MM |
| 243 | P0490243 | FLAT WASHER 12MM |
| 244 | P0490244 | CAPTIVE PIN |
| 245 | P0490245 | HEX BOLT M8-1.25 X 50 |
| 246 | P0490246 | FLAT WASHER 8MM |
| 247 | P0490247 | HEX NUT M8-1.25 |
| 248 | P0490248 | HEX NUT M10-1.5 |
| 249 | P0490249 | FLAT WASHER 10MM |
| 250 | P0490250 | HEX BOLT M8-1.25 X 100 |
| 251 | P0490251 | FLAT WASHER 8MM |
| 252 | P0490252 | TROLLEY WHEEL AXLE |
| 253 | P0490253 | INT RETAINING RING 35MM |
| 254 | P0490254 | BALL BEARING 6202-2RS |
| 255 | P0490255 | TROLLEY WHEEL |
| 256 | P0490256 | TROLLEY WHEEL SLEEVE |
| 257 | P0490257 | TROLLEY UNIVERSAL KIT |
| 258 | P0490258 | FLAT WASHER 10MM |
| 259 | P0490259 | LOCK NUT M12-1.75 |
| 260 | P0490260 | HEX BOLT M10-1.5 X 55 |
| 261 | P0490261 | PEDAL BRACKET |
| 262 | P0490262 | PEDAL |
| 262A | P0490262A | PEDAL ASSEMBLY |
Labels

| REF | PART # | DESCRIPTION |
|---|---|---|
| 301 | P0490301 | FENCE/CUTTERHEAD LABEL |
| 302 | P0490302 | CUTTERHEAD GUARD LABEL |
| 303 | P0490303 | ELECTRICITY LABEL |
| 304 | P0490304 | CONTROL PANEL FACE |
| 305 | P0490305 | SAFETY GLASSES LABEL |
| 306 | P0490306 | DISCONNECT POWER LABEL |
| 307 | P0490307 | READ MANUAL LABEL |
| 308 | P0490308 | GRIZZLY NAMEPLATE |
| REF | PART # | DESCRIPTION |
|---|---|---|
| 309 | P0490309 | GRIZZLY GREEN TOUCH-UP PAINT |
| 310 | P0490310 | GRIZZLY PUTTY TOUCH-UP PAINT |
| 311V2 | P0490311V2 | MACHINE ID LABEL CSA V2.08.12 (G0490) |
| 311V2 | P0490X311V2 | MACHINE ID LABEL CSA V2.08.12 (G0490X) |
| 312 | P0490312 | MODEL NUMBER LABEL (G0490) |
| 312 | P0490X312 | MODEL NUMBER LABEL (G0490X) |
| 313 | P0490313 | HEARING PROTECTION LABEL |
WARNING
Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine MUST maintain the original location and readability of the labels on the machine. If any label is removed or becomes unreadable, REPLACE that label before using the machine again. Contact Grizzly at (800) 523-4777 or www.grizzly.com to order new labels.
-54-
Model G0490/G0490X (Mfd. Since 8/12)
Grizzly WARRANTY CARD
Name_______________________________________________________________ Street_______________________________________________________________ City ___________________________________ State____________________ Zip ____________________ Phone #_______________________________ Email _______________________________ Model #_______________________________ Order #_______________________________ Serial #_______________________________
The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop better products and services. Of course, all information is strictly confidential.
1. How did you learn about us? ____ Advertisement ____ Friend ____ Catalog ____ Card Deck ____ Website ____ Other:
2. Which of the following magazines do you subscribe to? ____ Cabinetmaker & FDM ____ Popular Science ____ Wooden Boat ____ Family Handyman ____ Popular Woodworking ____ Woodshop News ____ Hand Loader ____ Precision Shooter ____ Woodsmith ____ Handy ____ Projects in Metal ____ Woodwork ____ Home Shop Machinist ____ RC Modeler ____ Woodworker West ____ Journal of Light Cont. ____ Rifle ____ Woodworker’s Journal ____ Live Steam ____ Shop Notes ____ Other: ____ Model Airplane News ____ Shotgun News ____ Old House Journal ____ Today’s Homeowner ____ Popular Mechanics ____ Wood
3. What is your annual household income? ____ $20,000-$29,000 ____ $30,000-$39,000 ____ $40,000-$49,000 ____ $50,000-$59,000 ____ $60,000-$69,000 ____ $70,000+
4. What is your age group? ____ 20-29 ____ 30-39 ____ 40-49 ____ 50-59 ____ 60-69 ____ 70+
5. How long have you been a woodworker/metalworker? ____ 0-2 Years ____ 2-8 Years ____ 8-20 Years ____ 20+ Years
6. How many of your machines or tools are Grizzly? ____ 0-2 ____ 3-5 ____ 6-9 ____ 10+
7. Do you think your machine represents a good value? ____ Yes ____ No
8. Would you recommend Grizzly Industrial to a friend? ____ Yes ____ No
9. Would you allow us to use your name as a reference for Grizzly customers in your area? Note: We never use names more than 3 times. ____ Yes ____ No
10. Comments: _______________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________
CUT ALONG DOTTED LINE

FOLD ALONG DOTTED LINE
Place Stamp Here
Grizzly Industrial, Inc.®
GRIZZLY INDUSTRIAL, INC. P.O. BOX 2069 BELLINGHAM, WA 98227-2069
FOLD ALONG DOTTED LINE
Send a Grizzly Catalog to a friend:
Name______________________________ Street_____________________________ City________________ State______ Zip______
TAPE ALONG EDGES--PLEASE DO NOT STAPLE

WARRANTY & RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly's sole written warranty and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants. In no event shall Grizzly's liability under this warranty exceed the purchase price paid for the product and any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special, or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then issue you a "Return Number," which must be clearly posted on the outside as well as the inside of the carton. We will not accept any item back without this number. Proof of purchase must accompany the merchandise.
The manufacturers reserve the right to change specifications at any time because they constantly strive to achieve better quality equipment. We make every effort to ensure that our products meet high quality and durability standards and we hope you never need to use this warranty.
Please feel free to write or call us if you have any questions about the machine or the manual.
Thank you again for your business and continued support. We hope to serve you again soon.
grizzly.com
TOOL WEBSITE
Buy Direct and Save with Grizzly® – Trusted, Proven and a Great Value!
Since 1983
Visit Our Website Today For Current Specials!
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24 HOURS A DAY!
1-800-523-4777




