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300u Starter Problem Solved?
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Posted by JayWalt on January 27, 2007 at 21:56:42 from (70.226.20.153):
Hey Guys,
Got a better look at my starter on my 300u. After some thought and measuring It seems that the gear is going too far on the starter shaft and "jumping past" the "corkscrew"'s end. If you look at this pic, the flywheel is EXACTLY 2 inches in. The second pic shows where this jumping occurs and its obvious the flywheel does not stop it before that. I wouldnt think the flywheel should stop it anyways. There is also slack in the return spring. The collar on the right is threaded and spins with the shaft. I'm thinking it needs turned down the shaft a bit to restrict the gear from getting to the point where it can "jump past" the corkscrew. There is actually quite a bit of threads that I could turn it down to, probly at least 1/2" of threads beyond where the collar currently is. I'm thinking I should take the shaft off and shim that threaded collar with a couple of washers to prevent it from working back and to also keep the bushing in the cast. I have no idea if there was washers and they came off (probly only likely if they were fiber washers or plastic). This is the ONLY explaination to the problem at hand. Could u guys tell me if the collar is in the proper location. I HIGHLY doubt that it is because first I cant imagine they would allow the flywheel to restrict how far the gear moved into it, and I also dont think there should be alot of slack in the return spring. There aout 1/4" before the gear even touches the spring. I'm 99% sure I'm going to try this remedy. Please let me know if you think there is something im overlooking. I plan to diasassmble and clean the starter in any event and relube that front beaings since it probly has never been lubed since theres no access for it. The far right bushing has a slight play in it, but it should be fine. Ideally I would like to get a new one, but thats probly not going to happen. Also how loose is the gear supposed to be on the shaft, it seems awefully loose, but dad says thats the design so it is less likely to bind up. The corkscrew is like a VERY course "acme" thread (squared threads like on a heavy duty turnbuckle). I would imagine being this design, some play would be fine.
 Also, since the gear has jumped, there is 2 possible rest positions for the gear. I'm ASSUMING the recess in the gear collar is too accommodate the bolt or whatever it is on the start shaft. Please verify this is the case. The pic shows it here in the wrong position (as does the first 2 pics, it actually goes back to the starter further), I just wanted you to see the piece I'm referring to.
 If you guys need more explaination, just ask. I'm not too great at explanations. Thanks guys!! Unfortunately if this is the fix, the clutch will have to wait, it doesnt slip at all which is kinda surprising to me, but oh well.
I kinda wanted to split the tractor since I got another month of layoff, but if it aint broke, I aint fixing it.
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