dddracing
01-05-2007, 07:43 PM
Just rebuilt my YFZ450 after the piston broke. I replaced the crank and rod, cylinder, head and a stock Wiseco piston. It starts and runs for approx. 10 seconds then dies hard like it locks down, but it isn't locking down as soon as it dies you can crank it over freely. I have checked cam timing, and pulled the head off to make sure the piston wasn't hitting.
I am wondering if the one way clutch for the starter could be freezing up and stopping the motor. I would figure that it would just spin the starter if this happened.
Please let me know if anyone has ever ran into this problem, or if there is something electrical that could cause this.
I am wondering if the one way clutch for the starter could be freezing up and stopping the motor. I would figure that it would just spin the starter if this happened.
Please let me know if anyone has ever ran into this problem, or if there is something electrical that could cause this.