High Lifter DynoJet Jet Kit for Arctic Cat 400I Auto (03-10) - Manual (Page 2)

STAGE ONE INSTRUCTIONS
1. Remove vacuum slide from carb. Remove stock needle & spacers, noting order of assembly (Fig.A).
2. Install Dynojet needle on groove #4 for applications below 5000 feet, groove #3 for above 5000 feet, using
all stock spacers. Install the Dynojet washers above the E-clip (Fig.A).
3. Remove stock main jet and replace with Dynojet main jet provided. With the stock exhaust, use the DJ134
below 3000 feet, DJ132 from 3000 to 6000 feet and DJ130 above 6000 feet. When using an aftermarket
exhaust with a high flow baffle, use the DJ138 below 3000 feet, DJ136 from 3000 to 6000 feet and the DJ134
above 6000 feet.
4. Locate the Fuel Mixture Screw (Fig.B). Using a flat blade screwdriver, turn the mixture screw clockwise
until it seats, then turn out 2.5 turns below 5000 feet and 2 turns above 5000 feet.
Fig.A
Q622.001
This is Groove # 1
Fig.B
Mixture Screw
Main Jet
Dynojet Parts