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Lower End Rebuild


tsuther78

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Just have a question to see if anyone knows. I blew out 5th gear last weekend. I tore the bike apart and replaced the gear. I even followed the book to make sure that I did it correctly. All it told me to do was make sure that the tranny went into all 6 gears. Which it did. than it told me to put the crank back in. Nothing about making sure that it was in any certain position. After finally getting it put all back together, I tried to start it to make sure that everything was ok. Well there is a problem. It will not start. Also when I am in neutral the sproket spins like it is trying to move the chain. I was just wondering if anyone has rebuilt a tranny and please just let me know where I fucked up. I really do not want to take it into the shop so they can charge me an arm and a leg. Is the crank suppost to go anywhere special??? I did not see any timing marks on it.

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Well I read just about every damn page in the book. There is nothing in there about timing. It is starting to baffle me because everything that I need is there. Does anyone have any other manuals besides the Clymer manual??? I would hate it to be something simple that I just overlooked. I got spark, compression, and fuel. The stupid ass shop wants $100 to just look at it. I have had a few of my friends over that know just about anything that you need to know about Banshees. Maybe someone out there has had the same problem.

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I don't have that much knowlage with your problem so I can't really help. The only advice that I can give you is don't take it to the shop. There are alot of very smart people on here, if anyone can help you there here. Just give them a little time and you'll get it going. If you take it to the shop that 100 could and probably will be several 100s

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Well, as far as starting, you'll have to figure that out or give us some more info. Does it have spark, fuel, air?

 

As far as the sprocket moving, you will see it move, even in neutral without a chain on it. There will always be a little friction there. Does it have a chain on it? If it's pushing the bike in nuetral, make damn sure everything in the tranny is right.

 

Did you figure out why 5th blew in the first place? That's what would scare me :blink:

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Well I did check for spark....there is plenty there. Before I started I drained the tank. I placed brand new fuel in there. The plug was wet when I tried to start it so I know that the fuel is getting where it needs to go. The chain is not on right now. That is why I was not to worried about the sproket spinning. I also did the compression check and everything was just like it was before I started. Is there anything with the timing that I am forgetting??? Clymers manuals pretty much suck about that. There is nothing in there about it.

It was pretty weird how I snapped 5th. I was getting ready to go up a hill so I downshifted to 3rd. I think that the tranny got locked between gears causing the problem. I do not know why 5th went. It is still blowing my mind.

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  • 5 weeks later...

Well I have tried everything now. I am getting a little pissed at the whole thing. I have changed out everything except for the block with good known parts from my buddies shee. Bastard still will not start. I even took the block back apart and started from page one. Think I just may sell it and get a 450.

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if ur sellin it for 450 ill buy it :D , but i just rebuilt my bottom end, and starting would have nothing to do with that, if it goes in 6 gears then your bottom ends fine, the crank only goes in one way so u dont have to worry about that, did you check your reeds? dump some fuel in the sparkplug hole and see if it starts, did you drain all the gas out of your carb when ou took it off?

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