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Fuel System And Carburetor
31
Fuel lines
• The carburetor contains a pump that draws fuel through the filter and up the fuel line. A hardened fuel line
that has cracked or does not seal tightly to a fitting may draw air into the line without leaking fuel out.
• Air leaks will reduce the fuel pumps ability to supply the carburetor.
• Clear line = fuel supply
• Blue line = return from primer to tank
NOTE: MTD started using low permeation fuel lines on some of the AC3 series of engines in 2009. In 2011, all
MTD hand held engines will have the low permeation fuel line to comply with EPA guidelines. The low
permeation fuel lines can be identified by their black color.
IMPORTANT: Low permeation fuel lines can NOT be serviced separately. The lower halves of the fuel lines
are serviced with the fuel tank and the upper halves comes with the carburetor.
To remove the fuel lines:
1. Disconnect the fuel lines from the carburetor.
2. Pull the blue fuel line out of the tank.
3. Remove the fuel filter by following the steps described in the Chapter 2: Maintenance.
4. Pull the clear line out of the fuel tank.
To install the fuel lines:
1. Cut a point on the new fuel lines.
2. Push the pointed end of the fuel lines into the holes in the tank.
3. Attach the fuel lines to the carburetor.
4. Install the fuel filter following the steps described in the Chapter 2: Maintenance.
5. Test run the engine before placing back into service.