check your fuel filter for blockage[usually found inside petrol tank] if not that, blocked jets in carb.
gerry millen
October 2009
Replace internal and external fuel pipes
Gordon
June 2007
rebuild carb, diaphram gets stiff from alcohol in gas
get kit $10 at local friendly garden tool supply repair
place
joe dudek
April 2006
remove guards & watch what happens on your fuel lines when you press primer - small cracks will pull air into fuel line (look for air bubbles/small drips - could also be dirt in carb., dirty air filter or dirty fuel filter (if fitted)
sean
May 2005
I can answer this question...
STRIMMER RUNS BRIEFLY UNTIL PRIMED PETROL RUNS OUT?