Re: Re: Whos the chassis expert

4 STROKE ENGINE NEEDS TO BE REBUILD AFTER 300HRS MAX. AND VALVE JOB AT 50HRS. SO MAKE SOME NUMBERS AND AT THE END IS THE SAME THING, THE GOOD THING IS NO OIL GAS MIX TO DO , THE BAD, THOSE 4 STROKE ENGINES EATS MORE CHAINS THAN A 2 STROKES.