Posted by joe csuti on August 05, 2012 at 16:18:36 from (126.96.36.199):
In Reply to: briggs engine posted by Amstrad on August 05, 2012 at 04:41:45:
If setting both valves to .004" clearance doesn't cure problem,then remove starter & check brushes in same.
Most briggs starters are of the 4 brush design,if brush springs weak from heat,brushes sticking or worn & only 2-3 brushes in contact with commutator on armature starter will spin eng with plug(s) out but with plug(s)in will stall on comression stroke,this is a common problem in tecumseh starters,replacement brushes are avail as a set from local mower shop,ebay,you'll need pn for starter to order/buy correct brush set.
Another thing you could check & is a common problem on briggs ohv eng,check that float valve in carb not leaking,this will flood eng when at rest & piston will hydrolock on compression stroke due to gas in cyl.
If valve clearance,starter or leaking carb not the problem,if eng was disassembled to replace gov assembly it's possible that crank/cam timing marks not lined up & timing out by one/more teeth.
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