Engine starts ok, runs for a very short time...(approx 15 to 30 secs) then stalls. I have adjusted the idle mixture screw and throttle screw as per the manufacturer's recs but cannot keep the engine running (there is another adj screw which the manual says is preset and cannot be adjusted). I noticed a small tear in the carby diagphram. Could this be causing the problem? Is it worth replacing the carby or buying a new trimmer? (Trimmer is ~ 14 yrs old)

Paul Wood, March 2006

try and test the spark plug, disconnect it and touch it to a piece of metal if it sparks; then its ok and it's probably the carby.

stewy, July 2008

how to thread the wire on the whipper snipper.

drew, August 2007

had the same trouble with mine.stripped down the carby and found the small mesh screen (filter) was blocked replaced with new one now ok

pete, June 2007

replace diaphram

joseph dudek, April 2006