The problem is that the bike vibrates a lot over 40 km/h and engine heats up a lot even during smaller runs. I can also hear a tik-tik noise in the front wheel as well (the bearing or the disk, I cannot figure out which one). The engine is quite jerky too.
Any suggestions would be really helpful.
Questions:
-Can I change engine oil to Motul 7100 10W40?
-When to replace spark plug and air filter?
-Is FI cleaning necessary?



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