Craftsman Mower (w/Tecumseh )- recoil starter unscrews itself off
Sears Craftsman 22" Self-propelled, Lightweight Magnesium
Model # 131 97800 (CRAFTSMAN, Model # 13197800)
Patents: 2,774,439 / 2,915,318
Craftsman Four-Stroke Models - Vertical Crankshaft
Serial no.: 9157 15057
(Tecumseh Model Number: ECV105-147002 )
The recoil starter functions fine until, after several pulls, it unscrews itself from the center shaft and comes off!
A while ago, I found that the center hub that the spring latches onto was a little cracked & bent all out of whack (just from the spring tension or over-tensioned?)
I hammered it back into shape, tried again but got same result.
Got grease in the area, thought maybe it was causing it to slip so cleaned all off, tried again, came off again after a few pulls.
Without an example, I thought maybe my reconstruction of the part may not have been correct. I bought a new one, cleaned everything up again, installed the new hub but again it came off after half a dozen or so pulls. I had previously oiled the spring. I just took it all apart and fairly thoroughly degreased it.
I don't think there were any additional parts that I forgot to install. I don't recall any lock washer or similar and I don't think it's possible that the rope, spring or anything else could be on backwards.
Under the cover the screw goes through the hub, the plastic reel (that hold the spring and rope)then into the shaft.
I've been unable to locate an exploded view of the inside of the starter.
Any ideas what the problem is?