[fisherman]

i have a 2001 honda trx 450 es 4x4 we have had the motor recently overhauled with a bigger piston .25 got it back from the shop and it keeps jumping time i have replaced the cam sprocket. i have recently re timed the engine and it run for two days no problem. started it today run for ten minutes and jumped again. need advice

 

[mud99]

Check the timing slack adjuster to see if its loose. Welcome to the forums.

 

[Redracer]

Exactly, check the tensioner.