Question about Stihl Ts400 Cut Off Saw Carb Carburetor Air Filter

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Fuel is running through carb flooding out when pulling to start

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Salvagedrover

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Nobody rebuilds a carburetor, it takes too long, is unreliable, and you're putting new parts in an old, worn out body, just replace the carb at that point. But I don't think it's the carburetor' fault. It's a cut-off saw that ingests a lot of stone and concrete powder so when the engine is sucking in air and fuel, it may also be sucking in extremely abrasive minerals that are wearing down the intake side of the piston. I would either shine a light through or completely remove the carb, and look inside the engine at the piston while you move the flywheel back and forth by hand. Is it super worn inside? Do the rings move up and down a lot in the piston grooves? You may need a new top end kit to rejuvenate your saw. Hope this helps.

Posted on May 03, 2016

  • Martin Purdey
    Martin Purdey Jul 07, 2018

    My stihl ts400 leaks petrol in air filter tried new carbs new tank vent pipe but still does it anyone no why

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Tim Hofstetter

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The float valve is stuck open. It's time to rebuild the carburetor.

Posted on Jul 30, 2014

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Are the cabies flooding or runing out of fuel? pull the choke on dose it help if it does low fuel.

Drain the bowls and see if there is plenty of fuel.....If its flooding turn the fuel off or block it when the engine starts to drop clys if it starts to pick up after 10secs or so the carbies are flooding

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