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Yamaha Big Bear 400 IRS - starter clutch?

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Yamaha Big Bear 400 IRS - starter clutch?

  #1  
Old 12-11-2018, 07:07 PM
Weekend Warrior
Thread Starter
Join Date: Nov 2018
Posts: 4
Default Yamaha Big Bear 400 IRS - starter clutch?

I recently picked up an 08 Big Bear 400. I noticed that when I crank the starter and if the machine doesn’t start right away, you can hear a “ka-clunk” noise coming from the left crank case cover. I pulled the starter clutch and idler gear. Is this amount of wear enough to cause “slippage” of that sprag bearing? Under bench test, it sounds quiet and locks as it should so I’m not sure...

 
  #2  
Old 12-12-2018, 05:02 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,522
Default

It usually isn't wear on the gear, it is wear on the "rollers" or often just the feeble circular spring stretched. Symptoms are normally a scream rather than a clunk though.
 
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