Hero pleasure carburetor tune

[Amila udesh]

Hi guys. I needto know how can I tune my pleasure carburetor. It's a hero pleasure and after the 4th service, the guy who serviced it told me " I tuned up your carburettor very well, and now you can run 50km from a 1L". I was happy untill I realised my bike is drinking petrol rather than a CAR! I can't find fuel screw and idle screw (recognise), I need to see them and I need to know how can I do it my self to make my bike consuming low petrol from 1L. (Increase the fuel efficiency)Thanks

(Sorry for the bad english)
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I am amila udesh

[jaffa90]

Have you a picture of the spark plug colour when removed from the engine?

[Amila udesh]

I didn't remove it .... and I don't wish! I didn't run my bike more than 70km after that service. .


Any way should I remove it and post a picture?
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I am amila udesh

[jaffa90]

The colour of the spark plug will tell you about the fuel / air mixture.
It could be a faulty choke, high fuel level or part blocked air intake if it`s running rich.

[Robby]

Ask the guy who tuned it what he did, or ask him to put it back to how it used to be.
The usual thing we tend to see is people trying to tune their bikes for power rather than economy, but an idiot with no idea can still ruin your tuning. I would expect to find that the needle position has been moved and the main jet changed for a smaller one.
The correct needle height and jet sizes will be in the workshop manual.