High Lifter DynoJet Jet Kit for Arctic Cat 400 2x4 (99-01) - 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 washer above the E-clip.
3. Install Dynojet slide spring (DSP008M) In-place of the stock slide spring.
4. Remove stock main jet and replace with Dynojet main jet provided. Use the DJ144 below 3000 feet,
DJ140 from 3000 to 6000 feet and DJ136 above 6000 feet. When using an aftermarket exhaust with a high
flow baffle, Use the DJ148 below 3000 feet, DJ144 from 3000 to 6000 feet and the DJ140 above 6000 feet.
When using an aftermarket exhaust with a quiet baffle, Use the DJ146 below 3000 feet, DJ142 from 3000 to
6000 feet and the DJ138 above 6000 feet.
5. 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, 2 turns above 5000 feet.
Fig.A
Q605.001
This is Groove # 1
Fig.B
Stock Parts
Dynojet Parts
Main Jet
Mixture Screw