Join Date: Nov 2009
Location: georgia's toe-nails of the foot hills
Re: Briggs 14 OHV toro/zero turn
The dents won't hurt anything as long as they did not happen to compress the top of the piston so as to grab the ring(s) and prevent sealing. Sixty psi cranking is not necessarily bad as the compression release will reduce apparent compression at cranking speeds. Unless you have excessive blowby past the rings, into the crankcase, it ought to work.
Also, unless you have taken all the 'slop' out of the governor linkage, and adjusted the governor speed (actually, the slack in the internal links) to the spec'd rpm, you should not condemn the engine as bad. Some governor linkages use a loooooooong spring, on or alongside the governor arm, which compresses the linkage, holding the governor arm tight against the rod, and holding the butterfly lever against the rod. Thus there is no delay between governor response to lowered rpm and the butterfly responding by opening the throttle. If you have worn pivots, or sloppy linkage, the governor is handicapped, and may not perform as designed. Dents in the piston crown won't do a dang thing as far as causing bog/stumble when a load is added. If the engine will rev up when manually throttled, it ought to work. You may have gotten a machine that has been 'worked on' by a shade tree learner. Some may make things worse while attempting to improve operations. Parts may be gone, mis-adjusted, substituted incorrectly, etc. If concerned, try to find a similar engine, such as at a mower shop boneyard, and see if you can take a picture, or cannibalize some parts... I have gotten parts at no cost once. Nice people.
simplificate & add lightness
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