notjustair
Well-known Member
Of course right now is gearing up to be the busy season on the farm. And now I am having trouble with the mower. I have never been proud of the way the engine ran on the big mower - an 18 horse Briggs twin flathead. The carb is ok and so is the fuel pump. Spark is fine. It just doesn't run "right" and have good power. It doesn't use oil but the engine changes running characteristics as it gets hot. I've decided that valve adjustment is the next item on the list. Has anyone done one? I can't believe you have to grind the stem to adjust lash! I should probably just replace the valves at that time but my thinking is that they likely won't have worn out if it doesn't have blowby or use oil. It just sounds like a day long undertaking considering I will have to pull the engine to do it (it's in a Deines ZTR). Is it as big a project as I am dreading? I will need to be in the fields shortly!