how to change traction drive belt on lt 36 lawn tractor

[John]

this belt its purpose is to drive the tractor .it runs from the top pulley to engine pulley shaft .oddly enough it the original belt on 11 hp. 36 in cut

[homeowners]

Is this the Sears part number #

917254220 ?   From the Owner's Manual: <strong>Motion  Drive Belt Replacement</strong>

The tractor drive belt may be replaced without tools. Park the tractor on level area, Engage parking brake. NOTE: BELT INSTALLATION DECAL UNDER LEFT FOOTREST. a. Remove mower. (See mower section, page 22). b. Remove two retainer springs from belt guide bracket below transaxle pulley. Remove bracket (Fig. 26). c. Swing belt guides away from belt, toward rear of tractor (Fig. 26). d. Roll belt over top of transaxle pulley. e, Roll beit over engine pul/ey and off idler (Fig. 28). f . Release parking brake. Pull belt as far as possible over top of clutch pulley. g. Reset parking brake. Pull belt over top of clutch pulley (Fig. 28). h. Pull belt out through shift gate to remove from tractor (Fig. 27).

Install belt by reversing above procedure. NOTE: REPLACE ONLY WITH BELT LISTED IN MANUAL.

Here's the manual:

You'd need to get the PDF in order to see those illustrations.