Question about Stihl Hs45, Hs 45 Hedge Trimmer Bottom Gear Box Cover Part 4228-641-0400

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Hs45 backfires spits

Trimmer was running well, then starts running erratically. On trying to restart, engine backfires/spits thru exhaust. Changed plug cleaned carb, replaced with fresh fuel mix. On trying to start still spitting, won't run. Any clues??

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Sounds like an over fueling issue, Try resetting the carb to its standard settings, screw both tuning screws right in ant then turn anticlockwise to the following settings H 3/4 of a turn. L 1 full turn. This should set it back to standard. If this doesn't help then it could be a carb diaphram or sticking needle.

Posted on Jul 16, 2013

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