what does the pilot jet do?

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Jan 6, 2002 | 09:50 PM

YamaWarrior01

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Trailblazer

Joined: Feb 2001

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I got a new yoshimura pipe and am going to rejet the carbs on my raptor. I know what the mains and needles do, but what is the pilot jet's job?

Jan 6, 2002 | 10:14 PM

GE4x4

Pro Rider

Joined: Feb 2001

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It supplies fuel during idle or slow speeds, once you get going the main jet takes over. The pilot jet is mostly for idleing.

Jan 7, 2002 | 11:09 AM

FISHER1648

Pro Rider

Joined: Jun 2001

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Check www.yamaharaptor.com, it has a great write-up on carb tuning in the Tech Tips section.

Jan 7, 2002 | 12:43 PM

Scream

Weekend Warrior

Joined: Dec 2001

Posts: 10

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The Pilot jet(s) supply fuel for Idle- 1/4 throttle...

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