Question about Stihl Br420c Magnum

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My br420c blower runs fine for about 20 seconds and then shuts off like the switch has been turned off

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Possibility 1) It sounds like it is sucking air with the gasoline. 2) don't rush the choke, leave it running on high with 1/2 choke. When you go to move the choke to off, move it very very slowly while the governor can catch up and raise the revs. Or slow the revs down before turning the choke off.

Posted on Oct 23, 2013

  • mikadot
    mikadot Oct 23, 2013

    Also don't use gasoline that has ethanol in any 2 stroke motors. Learn who has real gasoline and what octanes they are. Ethanol burns too hot and distorts or burns valves and piston rings etc. It may even seize your motor. Here is a list of real gasoline in Canada and the USA.



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