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Old July 21st, 2021, 07:24 AM   #6
Rev Limiter
jkv45's Avatar
Name: Jay
Location: WI
Join Date: Jul 2013

Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes

Posts: A lot.
MOTM - Jun '18, Oct '16
Start with your Idle Mixture Screws about 2.5 turns out. That should get you close if everything else is right.

Set it precisely after a ride, when the engine is at operating temp.

The adjustment can change, depending on air temp and fuel type (% of ethanol).

As TJ said - highest RPMs + about 1/8 richer (out) is my method. Reset the idle speed to about 1300 when you are done.

Also sync the carbs if you haven't, then redo the mixture setting.

Lots of info in this section -
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