Spark Plug - YCF 50 A 2017 Manuel De L'utilisateur

Spark plug maintenance should be conducted as per the instructions in the Tables of Scheduled Maintenance
and Checks. Once the spark plug is removed (as instructed below), check for any carbon or oil residue. Use a
small wire brush with kerosene to scrub the fins and surrounding area (except the electrodes) down
thoroughly. Should the visual inspection reveal any corroded electrodes or cracking, replace the spark plug
immediately.
( A ) Spark plug cap
( B ) Spark plug
( C ) Gap
( D ) Centre electrode
General Maintenance
1. Remove the spark plug cap (A).
2. Place the wrench over the spark plug (B).
3. Turn it in carefully then remove the wrench once the spark
plug has been loosened.
4. Inspect the spark plug electrode (D) for any signs of chips,
cracks or abnormal wear.
5. Further, check the spark plug gap (C) and find the correct slot
using a spark plug gapping tool. The correct spark plug gap
should read: 0.60 – 0.80mm (0.023 – 0.031 in)
6. Thread the spark plug into the hole in the cylinder and tighten
to specifications.
7. Put the spark plug cap back on the wire.
Warning
Do not attempt to handle or touch the spark plug while the engine is running. Allow the engine to cool
down completely before removing the spark plug to avoid serious or burn injury.
A
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SPARK PLUG

Spark plug reference per model
of motorbike:
 YCF50 A...........................NGK CR7HSA
 START F88S & SE/LITE 88S NGK CR7HSA
 LITE 125......................... ..NGK D8EA
 START F125/BIGY 125 M....NGK D8EA
 START F125S & SE............. NGK CR7HSA
 PILOT F125..................... .NGK D8EA
 LITE 150 ......................... NGK CR7HSA
 SM F125S........................ NGK CR7HSA
 SM F150......................... NGK CR7HSA
 PILOT F150/BIGY 150 ...... NGK CR7HSA
 F150 SPI........................... NGK CR7HSA
 F150 SPII/BIGY F150 M..... NGK CR7HSA
 F150 SPIII......................... .NGK ER9EH
 F190 SPIII/BIGY 190 MX.....NGK ER9EH
 BIGY 190 ZE.....................NGK ER9EH
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