Manual

Q107.002

1999~2007 Honda 400EX

Stage 1&2

Stage 1

For mildly tuned machines using the stock airbox with stock or

aftermarket filter. May also be used with a good aftermarket

exhaust system.

Stage 2

For mildly tuned machines using the stock airbox with airbox lid removed,

using stock or aftermarket filter. Should also be used with a good

aftermarket exhaust system.

Parts List

1 Main Jet DJ134

1 Main Jet DJ138

1 Main Jet DJ142

1 Main Jet DJ146

1 Main Jet DJ150

1 Main Jet DJ155

1 Main Jet DJ160

1 Main Jet DJ165

1 Main Jet DJ170

1 Main Jet Adapter DJA001

1 Fuel Needle DNO190

1 Mixture Screw Tool DT008

1 Adjusting Washer DW0001

1 E-Clip DE0001

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Q107.002 1999~2007 Honda 400EX Stage 1&2 Stage 1 For mildly tuned machines using the stock airbox with stock or aftermarket filter. May also be used with a good aftermarket exhaust system. Stage 2 For mildly tuned machines using the stock airbox with airbox lid removed, using stock or aftermarket filter. Should also be used with a good aftermarket exhaust system.
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STAGE ONE INSTRUCTIONS Q107.002 STAGE TWO INSTRUCTIONS 1. Remove top carb plate. Remove the slide lift arm screw and the two needle plate screws. Flip the linkage forward and remove the slide (Fig. A). 2. Install Dynojet needle on groove# 3 for applications below 5000 feet, groove #2 for above 5000 feet, using all stock spacers. Install the Dynojet washer above the E-clip. 3. Remove stock main jet. Replace with the Dynojet Main Jet Adapter (DJA001).