Since the past 2 days I am facing a minor pickup problem on my P180. I have a loose chain and the bike was serviced in October. I visited the Bajaj chap and he claims that the clutch plates are perfect. He says my tapet setting is loose (on the head of the engine) and that it needs to be adjusted. The bike has also started to knock a bit on pickup, put things normalise when momentum is picked up i.e. after 40kmh.

Is it the tapet or something else? For eg. the loose chain (it sounds a bit too loose), transmission wire which connects the spark plug.

My bike has completed 15000kms and I have genrally used normal unleaded petrol. Does engine have to be decarbonised? Can additives in petrol remove the carbon? If yes, please suggest names.

I am also getting my front fork oil changed. I have a thought of changing the wheel bearings too if needed. Please suggest a way to determine whether the bearings need to be changed.

Waiting for lots of replies.

Thanx guys.