What size is Stihl fuel line?

Stihl fuel line for the FS80 (4137 series) is 3.1mm X 5.7mm and is part number 0000 937 5004 for a 3 foot ish length.

Why does my Stihl chainsaw leak gas?

Hazard: The gasoline tank vent can become dislodged due to incorrect factory installation and cause fuel to leak, posing a fire hazard. Consumers should immediately stop using the recalled products and return them to an authorized STIHL dealer for a free inspection and repair.

Why is gas leaking from my chainsaw?

The primer bulb, fuel lines and gas tank are all possible sources of gasoline leakage. The cap on the gas tank or any of the washers in the system may also fit poorly over time and be the source of the leak. Inspect the carburetor for faulty gaskets or dirt that signifies the need for a cleaning of the unit.

How to repair a leaking fuel line in a Stihl MS?

Lube the new fuel line flange with 2 stroke oil and insert the curved end first. Work it into the tank with the square-sided tab oriented to the left in the square molding in the tank top (look at the first picture). Try to get the tab correct before the flange seats — even lubed with 2-stroke oil, it’s a #$%^& to turn.

What kind of fuel line does a Stihl Chainsaw use?

Perform chainsaw maintenance at your own risk. The fuel line becomes brittle with age and exposure to E10 fuel, and will spray fuel out from around the rubber flange where it passes through the tank. The -7701 is used on the Stihl 021, 023 and 025.

Where can I get replacement parts for my Stihl?

STIHL recommends using only STIHL replacement parts for the repair and maintenance of your STIHL equipment. We want every STIHL owner to have the best product performance possible, so if you are in need of STIHL repair or equipment maintenance, contact your local authorized full-line STIHL servicing Dealer.

What’s the fuel pick up number on a Stihl saw?

The -7701 is used on the Stihl 021, 023 and 025. The -7702 is used on the MS210, MS230 and MS250 saws. The fuel pick-ups vary by model and appear to be somewhat interchangable. Check before ordering.