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Sub Frame Removal

SAFETY FIRST: Protective gloves and eyewear are recommended at this point.


Remove the seat. See the Seat topic for more information. Remove the two remaining bolts (one per side) holding the side covers in place and pull off both side covers. On the CRF450X models you also must remove the radiator shrouds. See the Side Covers topic for more information.

Remove the muffler. See the Exhaust System topic for more information.

Note: The CRF450X has what is called the “service position” for the sub frame, it does not have to be removed completely but can instead be pivoted up and forward. This facilitates removing the carburetor and eliminates having to remove the battery and electrics.

Loosen the screw that clamps the air filter housing tube to the rear of the carburetor with a #2 Phillips head screwdriver.

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