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**Nithinchandrapaul** · 08-23-2015, 05:56 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Blueblack View Post

Basically the only way to know the correct AFR is by ride and feel method.
You know what a lean tuned bike feels like. So you can safely turn the AFR screw anti clockwise and make it richer. I'm sure you'll end up making it richer than it should but you'll know what too rich feels like. Then you can start making it leaner in small steps and see which setting gives you the best combination of acceleration and smooth ride.
I know this advice sounds too vague and not systematic but this is how I have solved the problem when it happened to my bike. Until you know what too lean or too rich feels like you won't know what perfect is.
Before you try changing the AFR always count how many turns the default setting is so you can revert back to it in case you screw things badly.
In any case rich is better than lean.
And feel free to ask me any doubts. I'll be happy to help you.

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How do rich feels like????
canu give any syptoms or signs that a good AFR posses???

**Blueblack** · 08-23-2015, 06:46 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Nithinchandrapaul View Post

How do rich feels like????
canu give any syptoms or signs that a good AFR posses???

Richly tuned:
1. Very bad fuel economy (obvious fact)
2. Very sluggish acceleration. No matter how hard you rip the throttle it just won't accelerate,in any gear.
3. Engine stays cool.
4. Sometimes when you pull in the clutch and let off the throttle the rpm doesn't fall to idle but hangs. You have to blip the throttle to bring it back to idle.

Lean tuned:
1. Very good fuel economy (again obvious)
2. Excessive amount of acceleration at low rpm but loses its punch at mid rpms.
3. Very difficult to maintain a constant speed. The rpm surges even with steady throttle. You cannot maintain slow speeds in traffic without using the clutch. Even then it's like controlling a bull.
4. Engine runs very hot. You don't even have to accelerate. Even at idle it's hotter than it should.
5. Engine vibrates a lot especially at high rpms in lower gears.

Things common to both rich and lean:
1. The transition from on throttle to off throttle is not smooth. Even If you gently roll off the throttle you'll get a jerk and will experience excessive engine braking which feels like hitting the front brake.

2. Clutch action is not smooth. In stop and go traffic when you have to constantly engage and disengage the clutch it will be jerky.

On biking forums on the Web it is reported that a lean condition improves as the engine heats while rich condition worsens. But from my experience this happens only in case of slightly rich or lean. If you experience this symptom then you are only quarter or half turn away from the perfect AFR.

My personal benchmark for perfect AFR is point 1 common to both. If you can abruptly close the throttle without any jerk or excessive engine braking then you have a perfect AFR

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**Nithinchandrapaul** · 08-23-2015, 07:17 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Blueblack View Post

Richly tuned:
1. Very bad fuel economy (obvious fact)
2. Very sluggish acceleration. No matter how hard you rip the throttle it just won't accelerate,in any gear.
3. Engine stays cool.
4. Sometimes when you pull in the clutch and let off the throttle the rpm doesn't fall to idle but hangs. You have to blip the throttle to bring it back to idle.

Lean tuned:
1. Very good fuel economy (again obvious)
2. Excessive amount of acceleration at low rpm but loses its punch at mid rpms.
3. Very difficult to maintain a constant speed. The rpm surges even with steady throttle. You cannot maintain slow speeds in traffic without using the clutch. Even then it's like controlling a bull.
4. Engine runs very hot. You don't even have to accelerate. Even at idle it's hotter than it should.
5. Engine vibrates a lot especially at high rpms in lower gears.

Things common to both rich and lean:
1. The transition from on throttle to off throttle is not smooth. Even If you gently roll off the throttle you'll get a jerk and will experience excessive engine braking which feels like hitting the front brake.

2. Clutch action is not smooth. In stop and go traffic when you have to constantly engage and disengage the clutch it will be jerky.

On biking forums on the Web it is reported that a lean condition improves as the engine heats while rich condition worsens. But from my experience this happens only in case of slightly rich or lean. If you experience this symptom then you are only quarter or half turn away from the perfect AFR.

My personal benchmark for perfect AFR is point 1 common to both. If you can abruptly close the throttle without any jerk or excessive engine braking then you have a perfect AFR

Sent from my C6902 using Tapatalk

thanks a lot for your valuable suggestions.
will do the same and let you know about the results soon

**Blueblack** · 08-23-2015, 07:22 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Nithinchandrapaul View Post

thanks a lot for your valuable suggestions.
will do the same and let you know about the results soon

You are welcome. I recommend you unscrew one full turn ( 360 degree) anticlockwise and see how the bike feels. It will make it smoother. Then turn it quarter turn clockwise if you are not satisfied with the acceleration.

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**Kartik Shetty** · 08-24-2015, 12:36 PM

Re: Yamaha FZ-16/ FZ-S

I have a doubt whether the brake pads purchased by me is genuine or not... Because after opening the package i saw KBX on the pad.

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**Kartik Shetty** · 08-25-2015, 01:30 PM

Re: Yamaha FZ-16/ FZ-S

Bought a used Fz and Painted it... Earlier it was like this

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**bilalans** · 08-25-2015, 08:39 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Kartik Shetty View Post

[ATTACH]190016[/ATTACH][ATTACH]190017[/ATTACH] Bought a used Fz and Painted it... Earlier it was like this [ATTACH]190018[/ATTACH]

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Nice work!! Did you do it yourself?

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**Kartik Shetty** · 08-25-2015, 08:51 PM

Re: Yamaha FZ-16/ FZ-S

Yes! Dismantling was done by me... For painting, I gave it to local paint shop...

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**Kartik Shetty** · 08-25-2015, 08:53 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Kartik Shetty View Post

Yes! Dismantling was done by me... For painting, I gave it to local paint shop...

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Got an opportunity to do an indept cleaning of the bike...

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**Kartik Shetty** · 08-25-2015, 08:55 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Kartik Shetty View Post

[ATTACH]189841[/ATTACH][ATTACH]189842[/ATTACH][ATTACH]189843[/ATTACH][ATTACH]189844[/ATTACH] I have a doubt whether the brake pads purchased by me is genuine or not... Because after opening the package i saw KBX on the pad.

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Please help.

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**bilalans** · 08-25-2015, 08:58 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Kartik Shetty View Post

Please help.

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You will not get a Yamaha branded break pads.. Though I have never checked what's written on them.. Yamaha also outsource them.

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**Kartik Shetty** · 08-25-2015, 08:58 PM

Re: Yamaha FZ-16/ FZ-S

Originally posted by bilalans View Post

You will not get a Yamaha branded break pads.. Though I have never checked what's written on them.. Yamaha also outsource them.

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Thanks Didn't knew that..

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**Nithinchandrapaul** · 08-26-2015, 02:14 AM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Kartik Shetty View Post

[ATTACH]190016[/ATTACH][ATTACH]190017[/ATTACH] Bought a used Fz and Painted it... Earlier it was like this [ATTACH]190018[/ATTACH]

Sent from my Moto E using Tapatalk

Nice work bro..
what colours have you exactly used?????
Have you given them any base coat or just painted it on the old one????
Have you painted the engine too??????

**Kartik Shetty** · 08-26-2015, 08:54 AM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Nithinchandrapaul View Post

Nice work bro..
what colours have you exactly used?????
Have you given them any base coat or just painted it on the old one????
Have you painted the engine too??????

Well, it was done from a professional car paint shop.. The owner is my dad's friend so the work was done professionally, that is the earlier paint was stripped and then this coat was applied..

For Black. Toyota Corolla black was used Paint Company was Sandox and blue I'll have to check...

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**Kartik Shetty** · 08-26-2015, 08:57 AM

Re: Yamaha FZ-16/ FZ-S

Originally posted by Kartik Shetty View Post

Well, it was done from a professional car paint shop.. The owner is my dad's friend so the work was done professionally, that is the earlier paint was stripped and then this coat was applied..

For Black. Toyota Corolla black was used Paint Company was Sandox and blue I'll have to check...

Sent from my Moto E using Tapatalk

Sent from my Moto E using Tapatalk

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