Quote:
Originally Posted by Yamaguy
Why is tht Matt? when I mow I only run about 3/4 throttle and have never had a problem. I don't like to run things to the max if it's not needed.
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The engine is designed to run under load at full throttle. You will do more harm than good by running it under load at less than full throttle. The amount of cooling airflow through the engine is directly proportional to the engine speed. By running it at 3/4 throttle you probably are actually working it harder than you would be if you were running it at full throttle. It may overheat and warp the exhaust valve, take the temper out of the rings, blow the head gasket, etc. if you do not mow/blow snow at full throttle. Just because you've never had a problem doesn't mean you won't. I know someone that let a guy borrow his Cub...the guy mowed at partial throttle with it ONCE and it overheated and annealed the rings, so now it uses oil like crazy.