How to adjust valve lash on a Briggs & Stratton 33000 series engine. This particular engine needed between .003 and .005 on the intake side and .005 to .007 on the exhaust side. Check your motor’s manual to make sure you’re adjusting the lash accurately. Furthermore, I initially created this video to address the problem of compression lock regarding B&S engines. Compression lock is mentioned several times during this video, but was ultimately NOT the reason this engine quit starting. The problem was a broken compression release mechanism on the camshaft which had to be replaced. However, if your valve lash is severely off, you might run into starting issues. This video will help with that. Otherwise, check out my other video series where I remove the engine and complete a cam swap. Cheers.