That is nice bro..! Its nice that you've got near 50 with pillion!!!!!!! That too @ 80km/hr

PRAISE 200 NS !>>><<<<!

Woah that's a great result bro.


Fast please

Today while lubing my bike's chain I had engaged it in the 1st gear and noticed that the wheel was rotating at quite a great speed even when the clutch was fully depressed.The gear had become quite noisy and hard for last few days and I had repeatedly reported about the hard gear shifts while getting it serviced today to the technicians but even after test riding the bike for full 15 mins they said this is normal and it will automatically become smooth after running for a few hundred kms.
Will be taking my bike to the service center tomorrow and get the problem solved but my real concern is that I am afraid that the gears might have got damaged as the bike had been running in this condition for the last 150 kms. This might have also been the reason for the low mileage I was getting.
Seniors please help!

I am a late comer and didn’t’ notice that discussion. Adjusting the AFR is discussed in almost every ownership thread now and it seems to be present day fashion. My doubt was just out of curiosity as all the experts in carburetor tuning are giving different left-right number of turns of that easily reachable screw. And no one knows exactly what they are doing or what the result of that screw turning will be. And none is satisfied with the result of this repeated tuning – if it can be called so – and hence they are doing it again and again, reaching nowhere.
A lean mixture causes overheating and rich mixture, sluggishness and low FE at the minimum. Knowing this, I guess, the engineers are tuning the carburetor to get the maximum power from the engine at the factory itself.
There is a warning in my bike’s users manual to not alter the carburetor settings as it is factory set for best carburetion. Suzuki does not allow any adjustments other than idle speed and throttle cable play. I think such warnings may be there in every bike’s manual.
More than that, the mechanics in the Suzuki SC are hesitating to retune the carburetor even if insisted by the customer, saying that it is almost impossible to bring back the settings to its original position if disturbed though they are using digital tachometer and gas analyzer.
Having it in mind, I searched on the net and came through some sites recommending entirely different methods for carburetor tuning.
1. Carburetor Tuning: The Air/Fuel Equation: Engine Builder
2. Dan's Motorcycle Carburator theory and Tuning
3. carb tuning
4. running rich? running lean? - Ford Mustang Forums
And I wonder why any of them do not recommend the 1 turn clockwise, 3 turns anticlockwise, taking out the broken screw and looking on the sky method like the 1 inch forward, 3 feet backward march.
And one more doubt. By mere turning of the AFR screw, how can we ensure that the engine is producing the maximum power, the exhaust gases are within the pollution limit and how much lean or rich the air/fuel mixture is? Is there any other reliable way other than depending the color of the spark plug?
Hope I am not disturbing you.
It is a pity that even the new bike before finishing 100 kms ride is undergoing this torture. The rider is always carrying a small screw driver in his pocket to ‘tune’ it.
It is true that everybody gets whatever he deserves.
Anyhow, thanks for the reply, PSRjee. I am not to question you.

Trip was for 1800kms+ comprising of 4 days. Route: Pune-Malegaon-Dhule (Pillion pickup)-Jalgaon-Akola-Nagpur-Nanded-Beed-Ahmednagar-Pune

Tank fulled : 4 times enroute. Used WD40 on the chain every 500~600kms.

No idea on why the chain is getting loose so frequently. Probably its due to the speeds we do normally. would go and ask the SVC guys on monday. Skin is hurting too much to sit on the bike. I have to wash my bike too, slush mud sprinkled on my bike, on me (little) and on her!! Got a huge lecture consisting of %^&$ long hours on 'how to ride a bike without splashing mud' as mud got splashed on her white tee!!

It was fun while riding on the highways at night . Had nearly got into a mess up at around 9pm in night near bhusawal when a few local fellows went to heights to impress my girl. We were having dinner. My usual sutta after dinner and her lecture on why cig is bad was on when these fellows took note of us. It was a sight when they were running away when they saw I had a gun on me (air gun :P).

Second of the same incident happened when enroute to wardha from nagpur. Was around 11PM in the night. We were to stop at Wardha at her uncle's house. 4 fellows saw us and started following us. I was riding slow due to all the khit-pit and big lectures being continuously drilled down into my ear . After few mins, they were trying to cause trouble . Coming in front of my bike, braking, passing comments when pat came to reply that I was dying to hear! " You got this bike to ride like this? Get going fast" And soon I take the bike above 120s and cross into 130s. Those fellows on discover and a p180, where no where visible in the RVM. I continue on this speed for some more time and a faint sharp shout is audible, "GO SLOW! I WILL BE BLOWN AWAY AT THIS SPEED!!!"

The scenario abroad and here are different.Questions to me are welcome .
If you had noticed single cylinder engines are a rarity in the developed countries and the Ninja 250 is called a beginner's bike. Tuning a multi cylinder engine is no joke and requires serious skill, along with equipment. Single cylinders on the other hand have far less moving parts ,and combustion cycle,and are comparatively easy to adjust the AFR .
Regarding turning the screw Left or right, if you had been reading my posts I always mention Clockwise and or Anticlockwise,and explain in detail the effects of the action...Most ASC mechanics in India who do the regular service of bikes are not aware of the intricacies of the AFR ....hence the reluctance, to adjust it.
Regarding the P200NS owners doing it by themselves, it is up to the individual to either go for it or not....and many here have reported betterment rather than detrimental effect....I had also posted the Graph on AF Ratio Vs Exhaust gas pollutant levels, so that members are aware .At no time I had encouraged owners to go on a adjustment spree and my posts were specific to queries.

I leave it to the P200NS owners to decide if these suggestions of mine are useful or not.

Someone please reply!

can anyone help to reduce vibrations. i feel them all over my bike!!!

Your post suggests that the Clutch is not adjusted properly and has more free play..this will mean that even if your clutch lever is fully pulled ,the clutch may not be fully disengaged...adjust for 5mm play at clutch lever and see...if you are not the DIY type, ask the ASC mech to reduce the clutch lever free play to 5mm.

is the bangalore NS group the NAKED WOLVES??

First of all, PSRjee, you are not the only one encouraging or advising or advocating this kind of AFR turning. And it seems you are misunderstanding me.
Whether it is in foreign countries or ours, whether it is single cylinder engine or not, the basic principle or technology is the same, I think, and the effects of the lean/rich mixture is the same.
The questions, or more correctly the doubts, of mine still remain unanswered or uncleared and it was based on the graph you posted a few pages back too.
Let me say that most of the authorized service centers of any bike are using reliable digital tachometer and gas analyzer to tune the carburetor and it is done by the service centre manager or mechanic trained by the company. They are not relying the sparkplug color after riding 1000 or so kms after tuning to know how it is.
And the disclaimer that you are not responsible for any adverse effects due to screw driver tuning is, pardon me, illogical and is like demonstrating hanging by neck in detail in cartoon network channel and showing a notice that the channel is not responsible if any kid kills himself by imitating it. It surely is like that as most of the bike owners here are like kids who know not the results of lean or rich fuel mixture on their bike and do not know what to do if anything goes wrong.
I never said that your suggestions are not useful but a suggestion like this tuning is not expected from a person, the most knowledgeable, depended and respected person here, like you.
It was the tappet noise once haunting all the owners’ forum. Tappet was the demon haunting all the bikes in India. Now the climate is changed and it is time of carburetor tuning. Let us wait to see what follows this demon.
As I said earlier, everyone gets whatever he deserves. This is what we call fate or destiny.
Once again thanks for finding out time to answer my query.
Regards best.

tighten the bolts. Its the only way. Go to any Probiking center, there are NS trained mechs available. Tell them your problem, they will tighten up the bolts. The next step to reduce the vibes is to add pads (which I would not suggest right now. This is only to be done when all the bolts are tight and still there are vibes)

Please somebody give a nice explanation on how to tune the afr screw

The stock settings are not always right unless and until there is a proper PDI done by the showroom guys which is not the case with most dealers of 200ns in india. The AFR screw is the easiest to tune rather than fiddling with the jets and all. I have done and redone the carb tuning on my ns as well as on my previous bikes. the svc "trained mechanics" most of the time do not even know how to align a disc brake assembly or some even cant do a proper chain adjustment. Every bike has a fault, even my fazer which is 40000km old still has that chain problem which the so called trained-mechanics have not been able to get rid of and they even claim that there is no problem when there is. the AFR tuning is a very easy adjustment, and to tell if the engine is behaving as it should, it is not absolutely necessary to have those expensive gadgets like those provided at the svc's, whose proper use is a mystery even to the trained-mechanics there.

DIY is not always bad, It builds your knowledge to a level when you will be able to tell the problem with just the sound of it.

Sir, your suggestions have always been useful, and no-one has ever doubted your knowledge or helpfulness.
Buddy, I agree that the senior members have been suggesting for the DIY in AFR tuning, but those are only for them who are interested in doing so, and doesn't have proper experience.
Also AFAI remember, all the responsible xbhpians here (whether PSR ji, or Rahul or me, or others) who have suggested for a DIY, have very clearly mentioned that AFR tuning must be done after the bike has clocked some good kms, and only if one has proper knowledge and understanding of doing so. Now, you can't expect us to quote this warning, every time there is a discussion on AFR tuning.

And in previous quote you had mentioned that the factory setting is the best for the Bike.
Well, It was not the case for me , or many others in the case of 200NS. For me, i had issues from the 1st day, with very bad low end response, and the Snatchy feel, over a high range of RPM. I too adjusted the AFR (and it was 1st time for me), with the help of seniors like PSRji, Rahul others, and I agree that I had to fiddle with it quite a few times, to get to the correct setting (and that's how you learn to do things). And Now I am very very satisfied with my Destiny. I have been riding bikes for quite a few years now, and i can vouch that the Factory setting was NOT the Correct one for the bike.
Although the principal being the same, but one have to adjust the AFR setting for combustion in 2 cylinders. That makes it More difficult to adjust a dual cylinder w.r.t to a single cylinder engine.
In a single cylinder, one can get to the correct AFR, hearing the engine sound, or by reference to the tacho metre. But I guess (no experience in this) it's not the same for a dual cylinder adjustment.

One can understand the setting from the colour of the spark plugs, just after riding 80-100kms, and NOT 1k kms. SO, in that case, after the adjustment, one can take their bike to the SVC, after a day or two to show the mechanic the condition of the Spark Plug, and then he can make further adjustments.
Completely agree on this Statement Buddy... Thus the name of my Bike!!!!

Absolutely. And it also builds up a nice connection/relation of the owner with his/her's bike.

Let me put ii point wise for you:

1. Carb Tuning, is part science and part art. Professional mech who do it, can do optimum tuning by just the sound of engine. And unfortunately even ASC may not have mech of that caliber.
2. FACTORY SETTINGS may not always be the best for your bike. Carb tuning depends on various factors including ambient air density. And is unique to every single bike.
3. For single cylinder engine it's a simple process, but fine tuning it takes time.
4. No, you are not going to blow your engine even at the leanest settings (by default majority 200NS are coming with a leaner settings.) And richer mixture is not going to harm your bike anyway apart from low FE and carbon deposits on spark plugs.
5. A carb gives you the freedom to tune as per your liking. You can't learn it if you don't do it. And there's nothing wrong with fiddling with things which you own. I buy a mobile and change the official ROM to a custom made ROM. You might think the factory ROM on a mobile is the best for it, I don't.
6. When at the time, Bajaj is not willing to plonk in a FI, why do you think that a better technology like gas analyzer is the best way to set an AFR? If that would have been the case, all of us would be very happy people.
7. At the end, turning the AFR screw even 2 turns either way, is not going to damage anything on your bike.

PSR, we come to the forum to learn. It's a blessing that we have knowledgeable people who are here to share there knowledge, and equally enthusiastic people who want to learn and get best out of their steeds. Ignorance is Bliss!