Engine RPM

tman7

Supportive Member
Joined
Nov 25, 2006
Messages
414
Location
Tacoma, WA
Name
Tony Gillihan
Can anyone tell me how to adjust the engine RPMS's on a Boxxer 421? I haven't checked yet to see what Im currently running at but my temps are down and just want to readjust if it turns out I am not running at the standard 3000 rpms when I get a hold of a tachometer.

Thanks

 

dealtimeman

Everyday is Saturday.
Joined
Sep 20, 2008
Messages
10,878
Location
Fort Worth , Texas
Name
Michael
I am pretty sure you can tune and adjust idle rpm not sure you can raise top end rpm in any way other than making sure it is running correctly.

Maybe someone more familiar with small engines can tell us how if it is possible.
 

Able 1

Member
Joined
Apr 12, 2008
Messages
6,469
Location
Wi
Name
Keith
On my TM (Peak) 25 horse, all you have to do is back out the screw on the carb.. Just look at the carb when you pull out the throttle to see which screw it hits..
 

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