It is the proven formula to fix factory lean conditions.
Carb settings with accelerator pump removed or disabled and after market F/A’s
These settings will work on both US and non US models.
1200R Aftermarket F/A’s (Flame Arrestors) chokes intact
110 Pilot jets, 1 turn out on low speed adjusters
120 main jets, 1-1/2 turn out on high speed adjusters
1.5 Needle and Seat, 95 gram spring (Dull Silver) 42-45 avg. pop-off pressure.
1200R After Market F/A’s chokes removed.
110 Pilot jets, 1 turn out on low speed adjusters.
125 Main jets 1-1/4 turn out on high speed adjusters
1.5 Needle and Seat, 95 gram spring (Dull Silver) 42-45 avg. pop-off pressure.
1200NPV
While the 1200NPV models don’t have the middle cylinder lean error that is common on the power valve models, you still can improve the factory tune by adding aftermarket flame arrestors and dialing in the tune. These are the recommended settings.
100 Pilot jets,
135 Main jets,
1.5 Needle and seat, 115 gram spring (Gold) 50-55 avg. pop-off pressure
