B&S engine question

[ArcticMan]

Originally Posted By: tig1
Originally Posted By: 97 GTP
Probably need to adjust the lash on the valves.


+1. These engines have a compression release system that operates off the exhaust lash clearance. The tolerance is within 3-4 thousands. Find the clearance for the intake and exhaust valves. Pull the valve cover and check them, especially the exhaust side.


Compression release broke. Mine had the same symptoms as OP. If you turn the engine all the way to the start of the compression stroke I think you may be able to get it to start. I did that for a year or so before I finally fixed mine. Briggs engine too. Part is cheap, but you have to remove the entire engine and flip it over to get to it.

 

[jeepman3071]

I'd definitely try adjusting the valve clearances first.

If you go to youtube.com, search user "Donyboy73". He has a video that shows step by step how to adjust the valves with basic hand tools.

I do this on a ton of these Briggs engines every year, it is very common.

 

[tig1]

Originally Posted By: jeepman3071
I'd definitely try adjusting the valve clearances first.

If you go to youtube.com, search user "Donyboy73". He has a video that shows step by step how to adjust the valves with basic hand tools.

I do this on a ton of these Briggs engines every year, it is very common.


I had the head gasket fail on my 21 HP Briggs. I had a friend replace the gasket(I was very busy at the time)but he had about .003 too large of clearance on the exhaust valve. I fixed the problem myself after viewing this problem on You-Tube.