How to replace the starter one-way bearing (From Raptortranny) - Page 3 - Yamaha Raptor Forum
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post #21 of 60 (permalink) Old 05-01-2010, 06:11 PM
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nice post
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post #22 of 60 (permalink) Old 07-19-2010, 07:46 PM
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Even with all this info, I still have a question. My 02' has a flat washer between the stock 52 tooth gear and the timing chain gear. Does it need to stay?
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post #23 of 60 (permalink) Old 08-18-2010, 05:19 PM
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I saved your pictures Quadmanic - Like I said I still have my original paper copy I printed off in case I need to take it out to the garage with me. But these can be preserved like an ancient artifact!!! Nice post sticky point to you!!! =)
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post #24 of 60 (permalink) Old 08-19-2010, 04:32 PM
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I have just joined this board in order to help a buddy who seems to be having this problem with his Raptor 350 but I can't find any information on this issue with that model. Does anyone have any experience that could tell me if the procedures are the same for both models? Any help you can provide is greatly appreciated. Thanks in advance.
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post #25 of 60 (permalink) Old 08-19-2010, 11:20 PM Thread Starter
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If you haven't been there already, try a new posting in the Raptor 350 section of the forum... I expect you'll get a lot more intelligent answers there.

From the BikeBandit micro-fiche, it looks pretty similar. I would expect that you could use the raptortranny info as an assist. Only thing not shown is the flywheel, so I don't know how to get it off... I bet you'll figure it out if it is different. Picture below from BikeBandit:
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'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo

Last edited by QuadManiac; 08-19-2010 at 11:39 PM.
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post #26 of 60 (permalink) Old 09-15-2010, 03:42 PM
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Great post and info.....BUT.... I have a question. I just pulled off the flywheel, and found that all 6 screws had been sheared off! WTF? I found five of the heads in the bottom of the engine....and have NO CLUE as to where the 6th one went?? Is there anyone out there that can offer any help on this? Thanks!
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post #27 of 60 (permalink) Old 09-15-2010, 04:45 PM Thread Starter
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Answered in your PM... but this is common - the bolts loosen up, then shear off under starting forces. Find missing heads with a telescoping magnet in the sump.

Use red loctite and torque to spec and it won't happen again.

'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo
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post #28 of 60 (permalink) Old 10-19-2010, 09:55 AM
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Good post it's really helpfull and the pictures are worth a thousand words. I have a problem though, I recently aquired a 660 Raptor but it had the one way bearing already taken off and the nut holding the flywheel and gear was missing so was the woodruff key. Can anyone tell me what size nut it is and what kind of thread count? It's a 2002 660 Raptor. Thanks in advance!
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post #29 of 60 (permalink) Old 10-28-2010, 05:47 PM
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Hey thanks buddy!
Got to do it this weekend ! Saved picture on my laptop !
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post #30 of 60 (permalink) Old 10-30-2010, 10:43 AM
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Hey guys!
i finished it this morning. tried to start it but its not starting. i hear the motor turn this time but it wont start. is there any timing to do? Cleaning the carb!? i dont have any idea of what to check by now.
At least my one way problem is gone.
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