Scoot died, NEW STARTER, still doesn't start  By  murkyapricot (Read 14,857 times)

What would cause it to suddenly need a stronger starter? Nothing has been changed on it in months
Also would that contribute to it cutting out mid ride?

Good job. The one thing I was looking for was the placement of the black jumper cable. It should have been attached to the frame. NOTE: if you connected it to the engine mounting bolt (the long bolt spanning the top of the engine) you will NOT have achieved a good ground connection, since the bolt floats on rubber bushings and is electrically isolated from the frame (sort of). Providing you clipped the black to the actual frame we are done with wondering about anything upstream of the starter motor.

I agree - there may very well be 2 problems - one that caused the thing to die during a ride, and another that is preventing it from turning over. The first order of business is to get the engine to turn over like it did with the plug removed, but with the plug in.

I can't imagine why you would need a high torque starter motor is you have not installed a high compression piston (i.e., a BBK).

Anyway, as you take stuff off to solve this - leave it all off until the engine is turning over properly (don't put the belt back on).

If it were me I'd next check valve timing.

I suppose there is always the chance Scrappy sent him a BBK piston & jug without him knowing it ...

Well the belt " at this point "was already removed and same issue. Why change variator ? Makes no sense at this point .

Can someone please explain WHY the variator is the issue ?

The only way the variator " at this point " can have anything to do wit this would be if something is jammed between the back plate of the variator and the engine case or oil seal area. This would still not be a variator issue.

Yeah , I think some missed that u already tried it without the belt. Before the video. Even if the variator was cracked , smashed welded to the boss and what not , it would still not cause this issue , lol.

If that does not work , then the issue is either on the opposite side " starter clutch side" , top end or inside the case.

Whoa, George.  Not to argue - but thinking thru this ...

That gear is a to get off and even worse to get back on.  And even though Murky may not use the kick starter, without that gear the variator won't work.  Seems like a million-to-one shot this is the problem, since the gear was not messed with since the engine was running fine.  My suggestion would be to assume it's OK and move on.

I thought Apricot was going to take pix of the valve timing (the cam gear and the flywheel) ... just in case ...

and I thought he would verify the placement of the black (negative) jumper cable when trying to jumpo start.

And ... presuming that all is OK, I'd agree to either look at the cylinder work or the starter clutch (odds on favorite being the former).