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Wont Start When Cold

Posted: Fri Feb 20, 2015 2:30 am
by Disco
The bike will not start when the engine is cold. When I go to roll the bike out of the garage ( in first with the clutch pulled in) I can feel the bike move back, stick a bit as if the clutch was engaged, and the come free. I turn the key to on and flip the ignition switch. I can hear my recently replaced pump priming the carbs. When I finally hit the starter I hear the electric somewhat turning over noise and then a sharp stop. After that I either get no turning over or that same noise again. When I try to push start the bike my rear just locks right up. After a couple of attempts of push starting the starter motor eventually decides to work. Please help, I'm starting to get funny looks from my neighbors.

Some possibly related info
-Changed my motor oil with Valvoline four stroke 10W-40
-Bike has just a hair under 20k miles, about 4k have been mine in the last five months
-The mornings are about 50%%d this time of year, I've started the bike up cold in much lower temps with no issues

Any help is greatly appreciated! I'm this :yikes: close to tearing the entire engine apart to find the issue

Re: Wont Start When Cold

Posted: Fri Feb 20, 2015 7:37 am
by pefrey
It sounds like the starter motor is the culprit. Not sure how to diagnose, do you have a manual?

Re: Wont Start When Cold

Posted: Fri Feb 20, 2015 7:16 pm
by Disco
I don't have a manual. I'll probably take the starter motor off sometime soon to take a look.

Re: Wont Start When Cold

Posted: Sun Feb 22, 2015 7:06 pm
by DonTZ125
If it's not the starter motor, then the starter clutch or the gears in the starter cover. We've seen a few in the past year or three that had sheared-off teeth that jammed up inside. If it's the gears, it's an easy fix. If it's the starter clutch, it's a bit harder (proper puller tool needed), but still straightforward.

Pulling the starter cover (right side, forward of the clutch cover) is the work of a few minutes, and easier than pulling the starter motor. Note that this is a 'wet' cover, and oil will come pouring out. Arrange various drip and drain pans accordingly.