I have Craftsman 917.388740 self-propelled mower. The original drive belt stretched & no longer had enough tension, even with adjustments, to move the wheels. Unfortunately, Sears online & phone parts, as well as other online parts stores, no longer show the drive mechanism on their parts diagrams or list a belt (I triple checked model number), so I didn't know what size belt to get.
I took the old belt to a shop & they sold me new belt that's a little shorter which I installed & adjusted using the knob on the drive lever. Now it takes off at high speed with lever in off position.
- I removed corrosion & polished the inner surface of drive pulley.
- I took the lever mechanism apart to make sure cable travels the full amount & lubricated cable which slides easily.
Unfortunately, the problem persists.
Does anybody know correct belt size for this model or have other recommendations?