Hi everyone, I"m brand-new to this forum, and looking because that a little help. I have actually a 20 horesepower V-twin Briggs, bending both intake, and also exhaust valve pushrods. Ns took the head in question off, uncovered minimal carbon in the valve guides, valve seats look good. Among the guides does show up to have actually moved upwards toward th valve spring, as contrasted to the other head. Another thing the puzzles me is that the exhaust valve ~ above the "good cylinder" does"nt travel really far when the engine is turned over by hand. Can this be a possible worn camshaft?Engine version is 407577 kind 0292 E1 code 040107YG give thanks to you in advance

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6 year ago

Yeah, the is in the sump, happens as well often. Ns tried to do a device to retrieve it yet the camshaft makes it very difficult to impossible.

Walt Conner

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12 years ago

"One the the guides does show up to have moved upwards towards th valve spring, as compared to the various other head."

Don"t think i have ever heard of both press rods bending at the same time. One should have obtained over into the other. The valve overview coming loose and comes part way out is usual of bring about the press rod come bend as the valve spring keeper come down and hits the valve guide.

B&S states there is no repair, bring away a new head which they have actually been replacing because that some human being up to 3 year old engines. Ns do have actually a solve for this IF every else fails.

As for the cam shaft, I have actually not heard of that engine having actually camshaft trouble but it should move about the very same amount as the other valves.

Walt Connerwconner5 at verizon period net


12 years ago

Walt, tell us around resetting the guides. Did girlfriend use any loctite or simply knurl for a chop fit? how long have actually you gone so much w/o any re-occurrence?



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12 year ago

"Walt, tell us about resetting the guides. Did you use any loctite or just knurl because that a chop fit? how long have you unable to do so far w/o any kind of re-occurrence?"

I haven"t actually tried "My Fix" myself. I have said it come others because that a pair of years. I have had no feed earlier on long term results.

This is going to acquire long. MY fix was intended because that those heads that were bored with a protect against ridge whereby the valve guided "bottomed" out and also consisted of cutting a shallow grove about the valve guide with the optimal edge also with the surface of the head, seating the valve guide and peening the aluminum of the head around, into, the recess, as you would perform with a valve seat.

Others have since told me the the heads no longer have actually a "stop ridge" yet are bored the very same dia. Every the means thru and also they have been cutting 3 shallow groves and filling them through Loctite. This was a machinist and claimed he had actually done that multiple times and also Loctite held. I was concerned about heat and Loctite.