Starts fine runs good for 1-2 minutes then dies. starts up with several pulls or choke. then dies again. changed the sparkplug no differance. cleaned the airfilter same result. george from texas
Garden - Stihl - Chain Saw Handle Models 064 066 Ms640 Ms660
Answers & Comments
Check the fuel filter and muffler for plugging. Check the fuel tank vent for plugging. Check the fuel lines for damage or decay. Check all of the carburetor fasteners for tightness including the mounting hardware for the carburetor to the cylinder. The carburetor does not appear to be pulling new fuel into itself after running on the initial prime. If the above hints don't help, you may have to service the carburetor. Check the gaskets and heat insulator block behind the carburetor for any obstruction/damage of the impulse passage which allows the carburetor to pump fuel. Hope this helps!