Recent content by mike123

ok, thanks for the tips but I figured out the problem, for anyone who decides to change a piston on thier own pay close attention to the timing marks, I had advanced my timing by 1 tooth on the cam sproket and that is why the grizzly acted the way it did, after setting it back one tooth on the...

All the parts are the right ones, i had the cylinder oversized up one size according to yamaha specs and a piston to match from yamaha. like I said it has lots of bottom end and it gets up to 65-70kph in no time but after that it looses its top end. Maybe I'm looking in the wrong places could be...

I have recently replaced the piston in my 660 grizzly, after putting it back together it started right up, sounds good, lots of power I took it out for a ride down a stretch of road and for some reason I can't get it past 74 kph. I have plenty of throttle left and it feels like it wants to go...

for anyone who might have the same problems I had with my 660 not starting and oil blowing into the air box, I can tell you now that you have a blow piston, if you're lucky maybe just need a new set of rings, at least that's what the problem was with mine.

I have a 2004 660 grizzly and after a riding for a couple of hours yesterday I shut it off and when I tried to start it back up it only turned over but would not start. checked the plug, fuel to the carb and both are ok, has a good spark, lots of gas in the carb but the gas is not getting into...