TOHATSU EverRun MX 25H Owner's Manual page 57

1. Stop the engine.
2. Remove the top cowl.
3. Remove the spark plug caps.
4. Remove the spark plugs by turning it
counter-clockwise, using a 21 mm (13/
16 in) socket wrench and handle that
is provided in tool bag.
5. Inspect the spark plug. Replace the
spark plug with wear on electrodes
and if the insulators are cracked or
chipped.
6. Measure the spark gap with a wire
type feeler gauge. The gap should be
0.9-1.0 mm (0.035-0.039 inches). If
the gap is different, replace the spark
plug with a new one
Use spark plug NGK B7HS-10
1
2
1. Electrode
2. Spark gap (0.9–1.0 mm, 0.035–0.039 in)
7. Install the spark plug by hand and turn
it carefully to avoid cross-threading.
8. Tighten the spark plug to the speci-
fied torque.
ENON00028-2
Note
Spark plug tightening torque:
27 N·m (20 ft·lb) [2.7 kgf·m]
If a torque-wrench is not available when
you are installing a new spark plug, tighten
it 1/2 to 2/3 a turn past finger-tight. If
reusing a spark plug, tighten 1/12 a turn
past finger tight. Have the spark plug
adjustment to the correct torque as soon
as possible with a torque-wrench.
ENOF00085-0
INSPECTION AND MAINTENANCE
57
ENOF01819-0
10