TEST OR INSPECTION
Step 13. Check for clogged muffler.
Remove muffler and inspect for carbon build-up or clogging. Replace clogged muffler (see paragraph 3-24).
Step 14. Inspect governor linkage and throttle linkage for bad adjustment or damage.
Step 15. Check engine cylinder head for leaks or cracks.
Tighten cylinder head fasteners if it leaks.
Step 16. Check engine fuel lines and filters for clogging.
Step 17. Inspect engine for major damage.
ENGINE RUNS ROUGHLY OR STOPS.
Check for empty fuel tank.
If fuel tank is empty, refill with leaded or unleaded gasoline.
Check that fuel shutoff valve and fuel line three way valve is completely open.
If fuel valves are not completely open, open them.
Check for loose spark plug lead.
Reattach spark plug lead to spark plug and press plug cap firmly onto plug.
Check that engine choke is open.
If choke is closed, open choke.