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Old 02-13-2013, 09:34 AM   #4
Gnarly Adventurer
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Joined: Nov 2009
Location: Tiverton, RI
Oddometer: 165
Dellorto guide

There are a few Dellorto carb tuning guides out there, here is one:

I'm no carb genius but managed to rejet mine. I believe the long jet you show is for adding extra fuel thru the high speed starting circuit when the starting lever is lifted.

1996 Gas Gas JTR270, 2001 Ducati ST4
1977 Honda 750F2, 1970 Honda QA50
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