11
IDLE SPEED
2.5 SPARK PLUG
The spark plug is located at the front of the
engine.
(1) Disconnect the spark plug cap and remove
The spark plug
(2) Visually inspect the spark plug electrodes
For wear or cranks in insulator. Replace if
needed.
(3) The center electrodes should have square
edges and the side electrodes should have a
constant thickness.
(4) Discard the spark plug if there is apparent
wear or if the insulator is cracked or
chipped.
(5) Measure the gap with a wire-type feeler
gauge and adjust if necessary by carefully
bending the side electrode.
SPARK PLUG GAP: 0.6~0.7 mm
RECOMMENDED REPLACEMENT PLUG:
NGK CR7HSA
(6) Check the sealing washer and replace with a
new one if damaged.
(7) With the sealing washer attached thread the
spark plug in by hand to prevent cross
threading. Tighten the spark plug. TORQUE:
12-14 N-m
2.6 IDLE SPEED SETTING
(1) Inspect and adjust the idle speed after all
other engine maintenance items have been
performed and are within specifications.
The engine must be warm for accurate idle
speed inspection and adjustment.
(2) Warm up the engine for about ten minutes
and connect a tachometer.
(3) Turn the throttle stop screw as required to
obtain the specified idle speed.
IDLE SPEED: 1500 ± 100 rpm
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