Spark Plug - Honda XR250 Tornado 2016 Owner's Manual

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Spark Plug

(Refer to the Safety Precautions on page 55.)
Recommended plugs:
Standard: CR8EH – 9S (NGK)
For extended high speed riding:
CR9EH – 9S (NGK)
NOTICE
Never use a spark plug with an improper heat range.
Severe engine damage could result
1. Disconnect the spark plug cap (1) from the spark
plug.
2. Clean any dirt from around the spark plug base.
Remove the spark plug using the spark plug
wrench furnished in the tool kit.
(1)
(1) Spark plug cap
3. Visually inspect the spark plug electrodes for wear.
The center electrode should have square edges
and the side electrode should not be eroded.
Discard the spark plug if there is apparent wear
or if the insulator is cracked or chipped.
4. Check the spark plug gap (2) using a wire-type
feeler gauge. If adjustment is necessary, bend the
side electrode (3) carefully.
The gap should be:
0.80 – 0.90 mm (0.031 – 0.035 in)
5. Make sure the plug washer is in good condition.
(2)
XR250 TORNADO
(2) Spark plug gap
(3)
(3) Side electrode