I have an annoying vibration in a Lawnboy mower that that can be felt in
I have 2 lawnboy mowers. The older one (D engine) runs perfectly
smooth. The newer one (F engine) has the vibration. If I run either
mower without a blade, the vibration is slight and equal. Neither mower
seems to have any runout when I look at the shaft while it is running
bladeless or as I pull the starter and look at the shaft (not running).
If I put the same blade, flange, washer and nut on each, the D mower
runs perfectly smooth and the F mower vibrates.
So, it is not the blade, flange, washer or nut. It doesn't have any
obvious shaft runout and the blade runs even on both sides as it is
turned (one side is not higher or lower than the other). It doesn't
vibrate any more than the good one when the blade is off. What could it be?
Please take the spam-bustin 7 out of my address if responding, so my
e-mail address is actually calbert "at sign" and then mchsi.com