Honda BF8D Owner's Manual page 104

TAKING CARE OF UNEXPECTED PROBLEMS
ENGINE WILL NOT START
Possible Cause
Out of fuel.
Fuel vent closed (portable fuel tank).
Fuel hose not primed.
Fuel filter or fuel tank filter restricted.
Bad fuel; outboard motor stored without treating or
draining gasoline, or refueled with bad gasoline.
Spark plugs faulty, fouled, or improperly gapped.
Spark plugs wet with fuel (flooded engine).
Carburetor malfunction, fuel pump failure, ignition
malfunction, stuck valves, etc.
102
Correction
Refuel (p. 84).
Open fuel filler cap vent (p. 85).
Squeeze priming bulb (p. 48).
Replace restricted filters (p. 87 or 90).
Drain fuel tank and carburetors (p. 96). Refill with fresh
gasoline (p. 84).
Gap or replace spark plugs (p. 83).
Dry and reinstall spark plugs. Start engine with choke and
throttle open.
Take outboard motor to an authorized Honda Marine
dealer, or refer to the shop manual.