Instead of that, I managed to find the full version of HONDA CBF 150 UNICORN SERVICE MANUAL.

Recently i replaced my piston rings on 2013 model hero hunk and valve grinding was also done..
Initially the mechanic inserted mineral engine oil,at that time the spark plug colour was light brown,then after riding 180kms i changed the oil to motul 7100 fully synthetic 20w50 oil..
Then after 20kms ride i opened the spark plug n noticed engine oil sticking to it..
When i rev hard after engine warm even at 8000 to 9000 rpm no white smoke is noticed from exhaust..
Then how the engine oil came to the spark plug..
If anyone have any idea do let me know..

Recently i replaced my piston rings on 2013 model hero hunk and valve grinding was also done..
Initially the mechanic inserted mineral engine oil,at that time the spark plug colour was light brown,then after riding 180kms i changed the oil to motul 7100 fully synthetic 20w50 oil..
Then after 20kms ride i opened the spark plug n noticed engine oil sticking to it..
When i rev hard after engine warm even at 8000 to 9000 rpm no white smoke is noticed from exhaust..
Then how the engine oil came to the spark plug..
If anyone have any idea do let me know..

You should stick to the genuine/original one.

Sent from my A0001 using xBhp Connect mobile app

Both the bolts have same thread but different head sizes. 17 ones are used in passion splendor etc. 17 One is little shorter in length i think

If the threads and the engine casing surface around the drain hole is fine you should get a genuine spare drain bolt with washer(no. 12 bolt) fitted. No.17 head size bolt with normal no. 12 bolt size thread on it(if you are meaning so) runs the risk of over tightening and ultimate damage of threads in the engine casing. It is also interesting how a no. 17 head size bolt has normal no. 12 bolt size threads on it although you may find no. 13/14 head size bolt with normal no. 12 bolt size thread on it in the market. Get the whole thing/process inspected in another ASC.

He mentioned the head size of bolt not thread size.

This means the thread of your bike's drain hole is gone. Get the hole aluminium welded, machined and 12 no. bolt hole done.

thanks nishesh ji for parts catalogue. its a must have for xtreme users.



usually i change engine oil myself but this time not able to open drain bolt because last time service center guy over tighten it, local mechanic open it by hammering. stock bolt 12 number was not available so i used 17 number bolt with washer.
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This is a question for Chennai guys

Which is the best SVC I have ever tried only 3 SVC from the day the I got the bike

Vishnu Motors in Ekkaduthangal

Nagappa Motors Kilpauk once because they were the only ones offering insurance for accident repairs

And

Kohinoor opposite Spencer in the BP petrol bunk.

Vishnu Motors was always a mixed bag it will be good once then disappointing the next time. Buy I mostly gave for service there, but over time they became expensive only for general service and rear brake pads change there bill used to come around 1.2k and then there was the time when they would never suggest what repairs to carry out. My front disc was worn but they never decided to change enquire about it nor change it. When I called two days after I took the bike, the technician said yes it had to be changed but he did not do it. I felt bad and did not fret about it.

From next time started giving at kohinoor. It was good for the first two times and then last time the ownership had changed and they had not even washed the bike properly, when I pointed that out. The owner lady and the guy responsible started having a argument about it and totally forgot about it. That was it I was pissed and disappointed so left it there and complained to Hero call center. The service manager called and said he will give me a free wash. Which I was not interested in because I cleaned the bike myself afterwards.

Now after these experiences I have no idea where to give my bike to service because the big ones Nagappa and Southern are over crowded and small ones like kohinoor have become brattish.

Chennai people please help.

P. S. Give is Hunk

This is a question for Chennai guys

Which is the best SVC I have ever tried only 3 SVC from the day the I got the bike

Vishnu Motors in Ekkaduthangal

Nagappa Motors Kilpauk once because they were the only ones offering insurance for accident repairs

And

Kohinoor opposite Spencer in the BP petrol bunk.

Vishnu Motors was always a mixed bag it will be good once then disappointing the next time. Buy I mostly gave for service there, but over time they became expensive only for general service and rear brake pads change there bill used to come around 1.2k and then there was the time when they would never suggest what repairs to carry out. My front disc was worn but they never decided to change enquire about it nor change it. When I called two days after I took the bike, the technician said yes it had to be changed but he did not do it. I felt bad and did not fret about it.

From next time started giving at kohinoor. It was good for the first two times and then last time the ownership had changed and they had not even washed the bike properly, when I pointed that out. The owner lady and the guy responsible started having a argument about it and totally forgot about it. That was it I was pissed and disappointed so left it there and complained to Hero call center. The service manager called and said he will give me a free wash. Which I was not interested in because I cleaned the bike myself afterwards.

Now after these experiences I have no idea where to give my bike to service because the big ones Nagappa and Southern are over crowded and small ones like kohinoor have become brattish.

Chennai people please help.

P. S. Give is Hunk