crank pully turns 2-3" without engaging crank?

[stakebody]

I have a 154
The crank pulley turns either way back and forth 2-4 " before turning motor ..still starts and runs ..any input on what's going on.thank you ..

[staninlowerAL]

Welcome to the forum. You probably have a bad woodruf key or keyway or both, Ref numbers 8 and 10. Click on the picture to make it larger. To view the parts manual, Select the ENG 1 Rev 20 12-75 Manual from the top of this page, Last folder (Tractor Parts Manuals) and download the manual. This link should take you there. http://www.farmallcub.com/[ Sorry, direct links to manual section is not allowed. ]/downloa ... %20OCR.pdf Stan

[gitractorman]

Yep, you have a woodruff key sheared off. I've seen several of them on lo boys. Unfortunately, it takes a little patients to fix it. You will likely need to get the next bigger size key and hand file both the crank and the pulley to fix it, if you haven't already worn both key ways out completely. I had one that I actually welded the key way on the crank then filed it back to original size. It's a tedious little job so plan for a whole day.

If you don't fix it, eventually it will completely wear out the pulley and you'll have to get a new pulley. You'll figure this out when you go to start it one day and it won't turn over the engine.

[stakebody]

I took a grade #8 flat washer that fits over crank .it fits perfectly on the flat spot of pulley

Ran pulley to where it hits and turns motor .i tightened it down with factory washer agaist new big washer
It has the pulley and crank locked ...its holding so far

It comes loose .looks like i will be doing the key and file ...thank you for info ..i did this today .i just read these comments now ...i just bought two .a 158.and 185 ....ill be back ..lol...this may not even hold what i did ..
Both need much help..

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