Briggs & Stratton OHV Intek Hard Starting
I am another of the seemingly many people fighting the hard starting problem with a Briggs & Stratton OHV Intek I/C engine (in my case, a 28N707 15.5 HP model). I have read many posts on the forum about adjusting the valves, and I have adjusted the valves. I have done this many times, but the engine continues to resist starting. I have watched the valves with the cover off, and both valves are moving strongly on their respective strokes. One thing I do not see is any kind of "bump" in the exhaust valve for the compression release. My understanding of the compression release for these engines is that it is driven by the exhaust lobe of the camshaft--that a small bump on the exhaust cam briefly lifts the exhaust valve during the compression stroke to relieve compression pressure. Am I correct? If so, mine isn't doing it. I have even tightened the exhaust rocker down until the exhaust valve is hanging slightly open and then turned the engine by hand. The valve moves strongly during the exhaust stroke, but otherwise not at all. I think this is my problem, but I don't know how to proceed from here.
Squalor, Austin, Texas
"That government is best which governs least." -- Thomas Jefferson