The recommended one is NGK CR7HSA
The possibilities could be:
1. The bike is running too lean
2. Clogged jets
3. Incorrect gapping of the spark plug
4. Dirty air filter
5. Clogged fuel lines
Thats all I can think of. Seniors did I miss something?
Ride the bike for few kms and remove the sparkplug and check the color. The color should be dark tan.



. My bike has a paper type air-filter. can it be cleaned at home/???

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