SOURCE: briggs 17hp intek overheadvalve on
hi there
pauly46 here
if engine seems to labour when trying to start as if too much compression ?
try adjusting to in and ex valve clearance to 0.003" inlet and 0.005" ex
inlet valve is the bottom valve, and has a alloy push rod. ex valve is top valve and has steel push rod ( as viewed from the front of the machine with rocker cover off ) )
note rotate engine with plug out to tdc compression stroke , then rotate it down the bore on power stroke by 1/4 inch ( 6.35 mm ) this is the point for setting in / ex valve clearances
manual says 1/4 pst tdc on compression stroke - this eliminates decompressor lift from the setting
cheers hope it hepls
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