Forum - Briggs & Stratton Racing
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Olywhizzer

Registered: 10/07/13
Posts: 10
Reply with quote  #1 
Hello all..

My son races snocross and at the end of last year we bought him another sled with a Briggs 206 motor in it. It was a brand new one in it because the first one had a bad cam in it. So I was wondering what I need to do to get it ready for racing that is coming very fast! I took the motor out and checked the valve lash and intake was tight and exhaust was at .003" so I put them both at snug.. Is this right? Also any other things I should do??

Thanks guys
Olywhizzer

Registered: 10/07/13
Posts: 10
Reply with quote  #2 
Anybody have anything???
BriggsRacing1

Registered: 06/22/11
Posts: 173
Reply with quote  #3 
Whizz, If you didn't pickle the engine last year (drained the fuel, used fogging oil, etc.) I would suggest dropping the carburetor bowl to see if ethanol or stale fuel left behind any oxide or varnishing.   That is probably the biggest issue after a long period of idle.  You might just want to take the carburetor off and check the float height as well.  IF you have any zinc/aluminum oxidation or varnishing take carb cleaner and thoroughly clean the bowl, idle jet, main jet, and emulsion tube.

To properly set the float height I would suggest going to the videos tab and watch the boring but educational video giving you a step-by-step.

If you pull the carburetor make sure you properly drain the fuel and when you reassemble everything physically check that your throttle returns to idle freely.
Olywhizzer

Registered: 10/07/13
Posts: 10
Reply with quote  #4 
I had that taken care of already so that's good... What about the valve lash? Do springs need to be changed?
BriggsRacing1

Registered: 06/22/11
Posts: 173
Reply with quote  #5 
I would put the valve lash at ZERO, both intake and exhaust, while the engine is cold.  When the engine heats up the lash typically will grow a thou or two.

The springs used on the 206 are premium springs with more pressure than you need at 6,100 rpm.  over an extended period of time on the engine they remain with more pressure than needed at your governed rpm.  That is the beauty of the product.  The need to change springs constantly is gone.  If your bored go for it but multiple seasons is more than a reasonable expectation.  

My only other suggestion is to use Amsoil 4T oil.  It was developed specifically for hi-revving air-cooled, splash lube systems and it's the best oil we have ever tested or used.  
Olywhizzer

Registered: 10/07/13
Posts: 10
Reply with quote  #6 
I already use Amsoil 4tawesome stuff thanks for the suggestions and help I appreciate it
BriggsRacing1

Registered: 06/22/11
Posts: 173
Reply with quote  #7 
Great.  If anything else comes up or you have other questions please just fire away!  Thanks for running a 206!
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