Extended Fuel Screw
DRZ400/SE
($15.00)
All FCR Keihin 39mm Carbs
($20.00)
DR125SE, 200SE, DR250/350 (off road and dual sport), AND DR650S/SE Extended
fuel screw
($15.00)
REMOVAL
The spring (B), Washer (C), and O-ring (D), are used from the old assembly and fit together as shown.
CAUTION! the Spring, Washer and O-ring are easily lost when removing the stock fuel screw as they often stay inside the carb and can fall out when the stock fuel screw is removed. We recommend that the carburetor be removed prior to drilling out the EPA plug and removing the Stock fuel Screw.
INSTALLATION
Re-assemble parts he Spring, Washer and O-ring onto New Fuel screw A so it matches finished assembly picture.
Turn the fuel screw in 15 to 16 turns. HINT: These are fine threads and any bit of debris can make it difficult to turn. If this happens, remove fuel screw assembly from carburetor, blow out hole, clean and re-install. Once assembly seats completely into carburetor, back out 1 and 1/8 turns as a base setting.