Forum - Briggs & Stratton Racing
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Racer944

Registered: 02/11/13
Posts: 4
Reply with quote  #1 
Hi there;

I am in the process of setting my valve lash on an LO206 for the first time. The video says 1 to 3 thousands, but I have also read it should be zero.... Any advice on which value to use?

Also, perhaps dumb question, but if it is zero, do you simply skip the feeler gauge and turn in nut until its tight to set the lash?

Thanks for any advice....
Eric
BriggsRacing1

Registered: 06/22/11
Posts: 173
Reply with quote  #2 
Someone is doing some great research! Our video does suggest 1-3 thousandths and then others do talk about zero lash (including myself). Valve lash on our racing engines will typically grow 1-2 thousandths at temperature. With that said ZERO lash is easy to set (check it COLD) and in theory will give you the maximum lift and duration possible. That is usually what I run but in the end you will never 'see' a performance difference onthe track. I do it because it's an easy check to do and I don't need a feeler gage to do it.

When the engine is cold, you simply set the lash (using the adjustment nut) until it is tight and then tighten the snub screw on the lock nut. Check it by hand to make sure there isn't lash and off to do battle you go!
Racer944

Registered: 02/11/13
Posts: 4
Reply with quote  #3 
Excellent! This makes sense and is simple to do... Thanks for the great advice as usual!

Cheers;
Eric
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