Bolens Riding mower Pt3 It runs! swapped the compression release Off a amazon cam for 25 bucks, Briggs & Stratton 17HP compression Release Fix, Part #84005207 793880 Camshaft Kit
I always took and put a little tig weld on the pin when I worked at the lawn shop, never had one come back. did so many under warranty its crazy they are still having problems with those cams. also pretty crazy that when that puppy lets go the most damage i've seen done was a wiped out governor gear.... pretty tough motors just shit acr design ! cool video man
I loved this video thankyou for explaining it clearly. now i can do the same to my own engine that has a broken compression release. p.s you sound like barney from Half life 2
Funny how that one failed. I guess the spring that keeps it engaged until the centrifugal force releases the compression release failed, since it still looked to be in one piece. I have seen videos where everything looked fine, with the release just jammed. I wonder if welding the Chinese cams to the shaft would work to keep them on the shaft? Too much welding might crack the cams as the weld cools and shrinks. Experimenting with one might be fun. Weld one, lock the shaft in a vise, and see if a big pliers or wrench could break it loose from the shaft.
Keep in mind that the case gasket from briggs is 15 thousands and the gaskets from most aftermarket kits are much thicker and will give you too much crank end play. Other than that I think using the old cam was the way to go..JS
Unfortunately the video glossed over a crucial part of the reassembly which is orienting the pin correctly on reinstallation. The video just says to set it correctly without showing what "correct" is or stressing that doing so is crucial to making the compression release work properly. Good catch on mentioning that the valve stem buttons are prone to falling off, however. Between the compression release, the valve seats falling out, the valve guides creeping out and the head gaskets blowing these engines seem guaranteed to fail in some way in about 10 years.
First check the rocker studs and then adjust the valve lash, then check to see if the release is working correctly 😢😢😢 Or you’ll be wasting the customer money