Question about Toro 2-Cycle 25.4 cc Straight Shaft Gas Trimmer 51974

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Gas leak where gas lines enter and leave tank

Gas leaks at grommet where gas lines enter and leave gas tank. Can the grommet be replaced?

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Also, make sure that the vent for the fuel tank is working. the vent is either on the fuel cap itself or thru a device commonly known as a duck bill valve, so named because of the shape of the valve. All the vent does is allow a slight amount of air to enter the tank while the trimmer is running.

Posted on Apr 04, 2014

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Gas leak at grommet on gas tank where gas lines enter and leave tank


Yes you should be able to replace the rubber tank seal that the fuel line goes through. Be sure to replace the fuel line(s) when you do.

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1 Answer

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Hello Brian,
I would visually inspect fuel lines entering/leaving tank that go to the carb. These tend to get brittle and crack. Also, some models have a rubber grommet that the fuel lines pass through entering/leaving the tank, these too get brittle and crack. If that looks good, you may have a stuck needle in carburetor and it will need to be removed and serviced. Hope this helps. Good luck and happy wrenching!

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The carbon canister may saturated. If you are one to try get as much fuel as possible into the fuel tank, that may be how it happened.

Also check the gas cap. There is supposed to be a one way valve to allow air to enter into tank, but not vent out in any direction but by the vent hose to the carbon canister. That valve may be leaking. Also, there is a purge vent to the intake manifold, check to make sure that passage is clear and not carboned up.

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1 Answer

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