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hard starting, need some input tonight

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Try the video again, seems there was one more thing I had to do to publish it.
 
To me it doesn't sound like the starter is turning the engine over at all. Pull a plug and see if you can tell if the pistons are going up and down. My bet is a starter clutch problem.
 
Sounds to me like it's cranking slowly, but it also sounds like it's got no compression.

Did the cam chain jump a tooth or three?
 
Are you sure the engine is turning over? It doesn't actually sound all that "slow". I have one foot in the starter clutch camp.
 
Good video.

Sounds like starter motor turning something, and something is putting a load on the starter motor (isn't just spinning freely like is just the starter motor out on a bench connected to nothing), but engine crank not turning (pistons not going up and down). COuld verify that by listning more at end of exhaust, or by removing a plug to hear if air blowing out and sucking in.

Sounds like starter motor is turning, and probably turning the starter clutch, but starter clutch not turning engine, starter clutch grabbing some but not turning engine.

.
 
I suspect they are all the same but here is microfiche for 80 1000G starter clutch.
The entire mechanism relys on that spring (6) and roller (5) .
Any problem with the spring or that roller or the surface it goes upagainst... and it will slip and not turn engine.




47.gif
 
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That's a pretty funny video indeed. I'm going to pull the stator cover off this weekend and see what's going on in there. Something has obviously come loose/broken. Someone questioned the cam chain but it's fine because when the bike does start it runs perfectly and I have been into the cams last week checking the valve clearances and everything was fine. Thanks for all your input everyone, I felt it was in starter clutch as well but I wanted to get a consensuses before I pull the stator cover and have to order another gasket. It's weird though, since I was last into the starter clutch/rotor I've put probably 6000km or more on the bike with no issues, I'll be interested to see what has given.
 
To me that sounds like the battery is toast. 9.6 V is way too low imho. Have you tried jumping from a car battery direct to the batt +ve and a lug on the crankcase. If not I would before tearing in to a starter clutch which sounds ok to me.
 
No, no I put a new battery in thinking that was the issue when it first started to happen spiratically (post #13) and I always check the battery 1st with any electrical issues. Voltage at the battery is high 12's and is the same to the starter relay, it goes to 9.5 when you go to start the bike, that is normal. Again it looks like the issue is somewhere in the starter clutch, or at least that's the next step. I'll be getting to that tomorrow. I'll post as I go, thanks again for all the suggestions.
 
I would still try jumping first and at the case to bypass the earth return. That vid sounds like the motor is turning, just not fast enough. At the very least I would pull a plug, crank and see if the piston is going up and down.
If you haven't already I would check out the earth strap back to the battery.
I know I'm going on a bit about this but.................
 
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Well found the culprit

20141024_220440_resized.jpg


The stupid crankshaft bolt came loose again...When I originally put the engine together I forgot to use loctite on it so of course it came loose. I cleaned everything up and used the Red loctite and torqued it down with my air gun, since then I must have put almost 7000km's on the bike, weird. So again I've cleaned the inside thread with Simple Green, then a degreasing solvent. Did the same thing to the bolt and I'll let it dry over night. Maybe I'll see if there's a strong loctite?
 
Well she's all back together and starting on a dime as usual. Very odd that the bolt came loose after 7000km of riding but I cleaned it out with degreaser and solvent, let it all dry overnight. Used red loctite and torqued it to spec then let it all dry for 24hrs, can't do anymore than that I don't think. The things I did different this time with than last was made sure the loctite was the full length down the thread inside the crank. Last time I put the loctite on the bolt only, hopefully this makes the difference. Best thing, I was able to save the OEM gasket for another use :)
 
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