Got a Craftsman 20 hp ohv need the valve adjustment on the intake & exhaust reading

SOURCE: tri9ed adjusting valves now on 18hp ohv. now makes

exhaust is by exhaust pipe, sonds like the valves are hitting the piston head. loosen up fast

SOURCE: Tecumseh 16 hp ohv adjustment

It is always best to have the exact model number of the engine you want to work on. Here is a helpful link:http://www.tecumsehpower.com/CustomerService/BSI.pdf

vince janis

• 718 Answers
• Posted on Mar 12, 2011

SOURCE: 2005 model Murray 42 " cut with 15 hp OHV engine.

Oh yes they were right !! This happened to my unit last summer, those intake and exhaust have to at least checked every time you tune up so for most that is a seasonal check to keep everything in check.The magnet inside mine got ripped off the inside wall of starter casing. Go to smalleng.com they have a video for this and all you have to do is find out the gap numbers, that local repair shop of yours will be happy to give you those numbers. Now get er done!! Good Luck....

Testimonial: " I am used to the old type engines and never thought of adjusting valves. The repair shop said the would do it for $32.50 and show me how. Thanks ;-)"

Roy Cagle

• 1545 Answers
• Posted on Aug 13, 2011

SOURCE: how to adjust the valves

Here is one solution for doing it and I will repeat with the Briggs suggested maintenance procedure.

http://pkjones.hubpages.com/hub/Hard-to-start-Briggs-and-Stratton-engine

Scroll down to ADJUSTING OVERHEAD VALVES.
http://www.briggsandstratton.com/engines/support/frequently-asked-questions/Servicing%20the%20valves/

Remember, proper setting of the overhead valves is important to insure that the ACR (automatic compression release) system operates correctly enabling a much easier start. Good luck.

SOURCE: what is the valve adjustment?

its the clearance between the rocker arm and the valve on briggs engines i set them to .006