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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Lbyvik on December 19, 2012, 09:04:21 AM

Title: WTB K100 starter. I think
Post by: Lbyvik on December 19, 2012, 09:04:21 AM

Ive got an 87 k100. The starter seems to be going bad. It spins up but wont engage.
Im a teacher and cant fork out $450 to maxbmw for a starter. Ouch!!

So what you guys got out there?  Or can i just replace the solenoid?  Other ideas?

Title: Re: WTB K100 starter. I think
Post by: frankenduck on December 19, 2012, 10:23:27 AM

No solenoids on K bikes.  They employ a sprag that catches to turn the engine.  Yours is probably gunked up.

More here: K Bike Starter Info  (http://www.motobrick.com/index.php/topic,2547.0.html)

Title: Re: WTB K100 starter. I think
Post by: wmax351 on December 19, 2012, 07:18:09 PM

Sounds like a sprag issue, as duck said. If it is something wrong with the starter itself (unlikely based on your symptoms) i have one i can sell.

Title: Re: WTB K100 starter. I think
Post by: Beemer01 on January 04, 2013, 04:25:02 PM

+1.  The sprag clutch is gunked up.  Add CD-2 to the oil - get someone to push start the bike - run 100 miles and that almost always clears up the problem.  Drain the old oil and replace with fresh stuff.

$5.00 solution.