18
The gap should be 0.70 - 0.80 m. Correct the gap, if necessary, by carefully bending the
side electrode
F7RTC or equivalent
Mount the spark plug carefully, by hand, to avoid cross-threading.
After the spark plug seats, tighten with a spark plug wrench to compress the water. If
reattaching a used spark plug, tighten 1/8 - 1/4 turn after the spark plug seats. If installing a
new spark plug, tighten 1/2 turn after the spark plug seats.
Attach the spark plug cap.
NOTICE:
An incorrect spark plug can cause engine damage.
Idle speed adjustment
How to:
Start the engine
Move the lever to the lower throttle position (turtle).
Turn the throttle adjusting screw to obtain the standard idle speed.
Standard idle speed: 1,800 rpm ± 1500 rpm
Sediment cup
The sediment cup prevents dirt and water from entering the carburetor. If the engine has not been
engaged over a period time, the sediment cup should be cleaned before use.
How to:
Turn the fuel valve to the Off position.
Remove the sediment cup using a 10 mm wrench.
Remove the o-ring and filter.
Clean each of the parts in a high flash-point solvent.
Reinstall the filter, o-ring, and sediment cup.
Tighten with 10 mm wrench to secure.
Return the fuel valve to the on position and check for leaks
0.70-0.80
mm
