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**sunilg** · 04-13-2011, 12:07 PM

query approved.

**Honda_CBF** · 04-15-2011, 07:55 AM

Thanks for your fast approval Sir Ji

**Guru_DTSi** · 04-15-2011, 11:27 AM

I think for most carburettors, the screw should be turned clockwise till it doesn't turn anymore. Then turn it anti-clockwise for one and a half turns. Then start the engine and check if the bike idles properly and turn it either directions till you are satisfied with it. But you might also want to check the Engine oil level. How many Kms has your bike clocked? A new engine might overheat in the beginning.

**Honda_CBF** · 04-16-2011, 01:45 PM

Originally posted by Guru_DTSi View Post

I think for most carburettors, the screw should be turned clockwise till it doesn't turn anymore. Then turn it anti-clockwise for one and a half turns. Then start the engine and check if the bike idles properly and turn it either directions till you are satisfied with it. But you might also want to check the Engine oil level. How many Kms has your bike clocked? A new engine might overheat in the beginning.

my bike's done 12000 km and everything's ok including engine oil. its just running lean.
and my new problem is i can not locate AFR screw...
plz tell where it is from the image..

**Honda_CBF** · 04-16-2011, 02:50 PM

Rediff.com
(Image of my carb)

**princesirohi** · 04-17-2011, 11:29 AM

^^ can't veiw your photos.........it says private album............

anyways, go to your service center, tell them you want more pick-up and less mileage, they will tune it for rich mixture. problem solved.

and when he is doing it see for yourself, the locaation of screw and just for your own knowledge, ask him how many turns he is keeping it at.

**Honda_CBF** · 04-17-2011, 04:20 PM

Originally posted by princesirohi View Post

^^ can't veiw your photos.........it says private album............

anyways, go to your service center, tell them you want more pick-up and less mileage, they will tune it for rich mixture. problem solved.

and when he is doing it see for yourself, the locaation of screw and just for your own knowledge, ask him how many turns he is keeping it at.

tried that man, they say pick up is perfect and its not good to fiddle with carb but the spark plug is tan in colour....
And I'm having big time issues uploading images directly with the post. Trying to figure it out.
<Posted via Mobile>

**Honda_CBF** · 04-17-2011, 04:46 PM

(Stunner's carb)
plz tell where is the AFR screw....

**skld** · 04-17-2011, 05:02 PM

There's a screw on the other side of the carb which is most likely the AFR screw. I am not sure if it is easily accessible because I had seen that screw when the carb was out of the bike.

**princesirohi** · 04-17-2011, 06:01 PM

i will ask with my local mechanic, and let you know. till that time can you post some pics of your spark plug, so that we can get an idea of how much lean/rich your AFR is.

**Honda_CBF** · 04-17-2011, 10:05 PM

Ok, I'll post my spark plug pic tomorrow.
And meanwhile i was googling about carbs and some say, AFR screw is under some cap... What does it means?

**Honda_CBF** · 04-17-2011, 10:16 PM

Originally posted by skld View Post

There's a screw on the other side of the carb which is most likely the AFR screw. I am not sure if it is easily accessible because I had seen that screw when the carb was out of the bike.

you mean one have remove the carb for tunning the carb... I think that's not true because engine needs to be running while tunning, right..?

**skld** · 04-18-2011, 11:45 AM

Originally posted by Honda_CBF View Post

you mean one have remove the carb for tunning the carb... I think that's not true because engine needs to be running while tunning, right..?

Based on what you said, I also tried getting some more information about Stunner's carb. Here's a site that describes a similar carburetor: Constant Velocity carburetor . This is a picture of the carb (from that site) viewed from bottom with the float bowl removed:

The tube on the right side goes towards the engine's intake. Unfortunately, the AFR screw is positioned facing inwards towards the bike. You can feel the screw with your finger on the back of the carb, just below the tube that goes towards the engine. On my bike, it seems impossible to get to the screw unless there's a special tool for it

**Honda_CBF** · 04-18-2011, 11:08 PM

Originally posted by skld View Post

Based on what you said, I also tried getting some more information about Stunner's carb. Here's a site that describes a similar carburetor: Constant Velocity carburetor . This is a picture of the carb (from that site) viewed from bottom with the float bowl removed:

The tube on the right side goes towards the engine's intake. Unfortunately, the AFR screw is positioned facing inwards towards the bike. You can feel the screw with your finger on the back of the carb, just below the tube that goes towards the engine. On my bike, it seems impossible to get to the screw unless there's a special tool for it

thanks for your inputs man, that was helpful. Anyways I'll try to reach AFR screw through the opposite (battery) side tomorrow. Don't know its possible or not but I'll try...

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AFR Setting on Stunner

AFR Setting on Stunner

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