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Old 23-12-15, 14:25
Pleiades Pleiades is offline
XT-Moto SuperStar
 
Join Date: Aug 2010
Location: North Norfolk
Posts: 5,320
Pleiades is on a distinguished road
Quote:
Originally Posted by Ron Warwick View Post
I noticed that I could turn the motor backwards to a point and it would jam up and then forwards again to where it jammed again (Est about 60 degrees) from one point to other. But couldn't turn it over a complete revolution.
A few questions for you which might help diagnose the problem:

(1) When you are trying to turn the engine over and it locks up I assume you're doing this with it in neutral? If you pull the clutch lever in (clutch disengaged), can you turn the engine over freely?

(2) Have you/did you notice any difficulty in selecting gears before the problem occurred - stiff action, false neutrals, jumping out of gear etc.

(3) You say your bike is 2010, is there any chance it could be 2009 model that was registered in 2010? Have a look at the VIN plate under the seat and see if it says "Yamaha Motor Italia S.p.A" on the first line.