Small Engine Troubleshooting Problems? Ask a Mechanic Now.
What is engine model number? SV series? How old is the engine? have y ever checked the valves? The Courage engine has solid lifters , so the valves may need to be adjusted. If valves are too tight, engine will loose power as it warms and the valves will get too tight and start to leak.. Causing the misfire and stalling.???
SV600 series valves set at .005 intake, and .007 exhaust. Here is link to service manual.