Contents: Fuel filter ↓ Float mechanism ↓ Carburetor cover ↓ Starting device ↓ Jets and emulsion tubes ↓ Carburetor body ↓ Accelerator pump ↓ Power mode economizer ↓
Fuel filter
Wash the filter in gasoline and blow it with compressed air. Check the condition of the filter. If the filter or the fuel supply pipe are damaged, replace them with new ones.
Float mechanism
Wash the parts in gasoline, check the condition. The floats must not be damaged. The sealing surface of the needle valve and its seat must not have any damage that would compromise the valve's tightness. The valve must move freely in its seat, and the ball must not hang. The weight of the floats must not exceed 6.23 g. Replace faulty parts with new ones.
Carburetor cover
Clean the cover and all holes and channels from dirt and oil. Wash the cover in acetone or gasoline and blow with compressed air. Inspect the sealing surfaces of the cover. If there is damage, replace the cover with a new one.
Starting device
Clean all parts of the starting device, wash with gasoline and blow with compressed air. Inspect the parts, replace damaged ones with new ones.
Jets and emulsion tubes
Clean the jets and emulsion tubes from dirt and resinous compounds, wash them with acetone or gasoline and blow them out with compressed air.
Do not clean the jets with a metal tool or wire, or wipe the jets and other parts of the carburetor with cotton wool, cloth or rags, as the lint can clog the fuel-emulsion tract. If the clogging is severe, you can clean the jets with a soft wood needle soaked in acetone.
Carburetor body
Clean the housing from dirt and oil. Wash its channels with acetone or gasoline and blow with compressed air. If necessary, clean the channels and emulsion tubes with special reamers. Inspect the sealing surfaces of the housing; if they are damaged or deformed, replace the housing with a new one.
Accelerator pump
Clean the pump parts, wash them in gasoline and blow them with compressed air. Check the ease of movement of the ball in the sprayer and the movement of the moving elements of the pump (lever, diaphragm parts). No jamming is allowed. The diaphragm must be intact, without damage. Check the condition of the sealing surfaces and gaskets. Replace damaged parts with new ones.
Power mode economizer
The diaphragm must be intact and without damage. If the total length of the diaphragm pusher, including the head, is less than 6.0 mm, replace the diaphragm with the pusher assembly.