CAN-AM (BRP) Discussions about CAN-AM ATVs.

air/fuel screw settings

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Old Apr 2, 2004 | 03:49 PM
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yamahawarriormods's Avatar
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Default air/fuel screw settings

can anyone tell how many turns out the air/fuel screw has to be on a ds650
 
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Old Apr 2, 2004 | 09:19 PM
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JMAC650's Avatar
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Default air/fuel screw settings

around 2 1/2 to 3 1/2 turns.
 
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Old Apr 2, 2004 | 09:30 PM
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Forcefed's Avatar
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Default air/fuel screw settings

There are SO many variables involved that its hard to exactly tell you from one machine to another.

There is a procedure that many people use that will help simplify this question for you.

At an idle....

Turn the screw IN slowly, until you hear the engine begin to change RPM (bog).....

Now, begin turning the screw OUT slowly, while counting the number of turns, until you hear it bog again....

Now divide the number of turns in half, and return the screw to that point.

Should get you really close.

p.s. If you are less than 1 turn out, or more than 3 1/2 turns out....a different pilot jet may be in order.

 
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