Spark Plug - Honda CRF50F Owner's Manual

37GJGA00.book 62 ページ ２０２１年３月５日 金曜日 午後２時５０分

SPARK PLUG

Refer to the Safety Precautions on page 50.
Recommended plugs:
Standard:
CR6HSA (NGK) or
U20FSR-U (DENSO)
For cold climate: (Below 5°C, 41°F)
CR5HSA (NGK) or
U16FSR-U (DENSO)
For extended high speed riding:
CR7HSA (NGK) or
U22FSR-U (DENSO)
For most riding conditions this spark plug
heat range number is satisfactory. However,
if the motorcycle is going to be operated for
extended periods at high speeds or near
maximum power in hot climates, the spark
plug should be changed to a colder heat
range (a higher number).
62
Never use a spark plug with an improper
heat range. Severe engine damage could
result.
1. Disconnect the spark plug cap.
2. Clean any dirt from around the spark
plug base.
3. Remove the spark plug.
4. Visually inspect the spark plug
electrodes for wear. The centre
electrode should have square edges and
the side electrode should not be eroded.
5. Discard the spark plug if there is
apparent wear or if the insulator is
cracked or chipped.