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Posted

My bayou 250 came to a stop and would not not start, it turned out the starter clutch had a fit and died. I changed the starter clutch which had sheared off the 3 bolts attaching it to the flywheel and everything went smoothly. However, when I went to start it I found it would not start. On investigation I found the timing out of whack, by alot. Thinking it was something I did on the repair, I repeated the process of removing and reinstalling the starter clutch and related components and resetting the engine to TDC. Tried to start and immediately realized the timing was out of sync again. 

Is there something I'm missing? Could there have been a bigger issue, possibly on the other side of the engine? I don't understand why, with a brand new starter clutch there would be such movement in the crank. The timing chain and sprockets do not look worn and appears to be tight on the tensioner. When I move by hand everything appears to move as you would expect. But when I try to start it using the starter or the pull start it goes out of whack! 

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Posted

I would take a closer look at the timing chain and gears, roll it around and look at all the teeth, and im sure you checked the flywheel key. Yes something else could have happened if it sheered off bolts thats a lot of stress on gears.

Posted

Did you change the cam timing when you replaced the starter clutch ?

And are you saying the cam timing is changing from where you had set it to ?

And what's the play in the crank ? What direction is this play ? The starter clutch shouldn't effect end float or rotational play in/of the crank.

Posted

There's a lot needs explaining .. Apart from my questions in #3, did it stop unexpectedly or did it get turned off ? When it first wouldn't start, was that because the starter wouldn't crank or because it wouldn't run when cranked? Which came first, no start or broken bolts ?

At this stage it's possible the flywheel key is broken, and that that was the original problem, or a subsequent problem. The sprocket and chain look good, I doubt it's jumping if the tensioner is working.

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