What you need
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A flathead screwdriver
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A Phillips head screwdriver
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A T25 torx wrench
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A Carburetor Adjusting Hex Screwdriver
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Unclip the air filter cover.
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Extract the air filter.
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Filter and carburetor case fixing screws
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In an anticlockwise movement, unscrew the two fixing screws using a T25 torx key.
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Remove the two screws and then the filter case.
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Remove the carburetor.
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Unhook the accelerator cable. Make sure to remember the location.
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Extract the transparent fuel return hose.
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Extract the black fuel inlet hose.
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Unscrew the two priming pump attachment screws by turning them counterclockwise.
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Remove the pump.
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Peel off the pump membrane.
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Once the pump is disassembled, turn the carburetor 180° to access the four mounting screws.
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Use a Phillips screwdriver to remove the four membrane cover screws.
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Remove the membrane cover.
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Remove the needle lever membrane with the membrane seal.
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Note: The membrane lever will act on the needle lever.
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Unscrew the screw that holds the needle lever shaft.
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CAUTION: Be sure to hold the lever with your thumb to prevent the spring from popping out.
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Remove the lever, the spring, and the needle.
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Set screw
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Unscrew the two adjustment screws counterclockwise using the specific adjustment screwdriver.
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Extract the two screws.
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Immerse the carburetor in the ultrasonic bath for 15 to 20 minutes at a temperature between 25 and 35°.
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Remove the carburetor from the ultrasonic bath.
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Rinse the carburetor with water, dry it by blowing it out with compressed air.
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Reinstall the spring and needle.
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Use a flat screwdriver to hold the lever in place.
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Tighten the screw that holds the axis of the lever using a Phillips screwdriver.
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Reinstall the needle lever membrane and the membrane gasket
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Reinstall the membrane cover.
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Tighten the four cover fixing screws using a Phillips screwdriver in a clockwise direction.
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Reinsert the two adjustment screws.
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Screw them in as far as they will go without forcing them clockwise with the adjustment screwdriver.
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Pre-adjust the carburettor by unscrewing the two screws one and a half turns counter-clockwise
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Take the pump cover.
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Reposition the pump membrane and its seal.
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Replace the pump cover and tighten the two fixing screws clockwise using a Phillips screwdriver.
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Reinstall the black fuel inlet hose.
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Reinstall the transparent fuel return hose.
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Reattach the throttle cable.
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Insert the two fixing screws in the air filter housing and then in the carburetor body.
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ATTENTION: Make sure that the fixing screws align with the holes of the gasket.
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Tighten the fixing screws clockwise using the T25 Torx key.
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