Question about Stihl Br 500 550 600 Backpack Blower Throttle Cable Assembly 42821801100

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Engine wont rev up

The carby is not priming properly and will not rev even when i lean it off,the rev only go a little on full throttle

Posted by Anonymous on

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Mine was starting and running weak then cutting off after a few minutes,,, after changing plug, air filter and having the carb cleaned ... it ended up being bad ignition cable that fixed it.

Posted on Feb 07, 2015

The fuel system is blocked up
perhaps the plug is bad
and the air filter will need replaced

or the fuel tank vent is also blocked up

Posted on Dec 04, 2014

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Posted on Jan 02, 2017

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2. Dirt, rust, water, or ethanol sludge in the fuel system.
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5. TPS sensor out of adjustment or faulty.
6. Wrong spark plugs for the type of service.
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For more information about your issue please click on the blue links below. Good luck and have a wonderful day.
How To Fix 5 Common Bike Issues RideApart
http://www.thegsresources.com/_forum/showthread.php?181491-Bike-in-idle-and-rpm-s-go-up-and-down-then-stall
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As for the idle speed, when bike is warmed it will idle a little different to when cold and using choke.

Personal preference really, without a tacho fitted, I set it so she idles easy when cold. Once she's warm, idling is generally not used!!

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