Point to be noted & thanx for clarifying the doubt buddy..So when shall v expect for FXR 150 then??? Really it will be a neck to neck competition if they gonna release in India..Now am really happy that GS is moving on a quick rate. Earlier I used to encounter hardly 3 to 4 bikes a week. But now I guess people must have realized its capability when compared to other bikes in the same segment..How's the sales & services over there??

Hey guys, how are you counting turns while tuning the carb? When I set my carb screw to 3.75 I was feeling loss of power. I understood I was getting a leaner mixture as the bike was struggling to cross 70. So I reverted to the old settings ie 5 turns from the anti clockwise lock position. Or may be it is actually 2.5 turns if I am not calculating the turns correctly. Whats your take on this guys? Raj

I think you can perceive the term 'rotation'.
When you lock the fuel screw of the carburetor in clockwise turns,mark its position,note the angle in which the screw dent(the place where you insert the screw driver) is in.Right from that angle,turn the dent for an entire 360 degree anticlockwise..........that completes one turn or rotation,towards richer.
Again similarly go in for a second turn..........and so on.....till the number of turns you want to achieve.

The screw dent should align like its initial appearance whenever you complete a turn.
Another thing is that,be very patient,as because hurried tuning may count it wrong in our minds...........we all know,during times half a turn may be perceived as a full turn by us

I have no problem,getting my bike serviced in my city.Its serviced well enough to put some new Hero Honda's to shame

About the FXR150-I dont know if Suzuki is ever gonna launch it here in India.
Suzuki is becoming like TVS......
Just like TVS readies bike after seeing what Hero Honda is bringing up.
Suzuki also watches how Honda is catering in the market and tries to emulate it.

Since Honda is not launching their CB150RR,this year and is satisfied with the CB-Unicorn and Dazzler so lets also expect that Suzuki would be satisfied with the GS150R for this fiscal........it may bring up a 125cc thats Slingshot and a 150cc cruiser for now.

Though I am also aware of the fact that they are developing a GSX150R on the platform of the erstwhile FXR to launch in near future along with GS250R or the GSR250 whatever you call it.The 250cc seems ready by now though and may get launched in 2011 after Honda introduces its CBR300 or VTR250.

@Mach 4 turns anticlockwise for a optimum mixture right? since i am thinking of doing it after a oil change since getting 50KMPL currently on 90% highway runs so will 4 turns make it any better?

now i see what i was doing wrong. So in stock conditions my carb was set to 2.5. I will tune it today. Thanks for your help. Raj

I got the info from Suzuki SlingShot 125 Price, Specifications & Photos | letmeget.com

We will have to wait till the official announcment from suzuki to comment on the specs...

"Carb screw" is actually called "pilot jet air screw" , if you are tightening it ( turning clockwise ) you're making the mixture richer ( during idling and part throttle ) if you're opening it ( anit clockwise ) you're making the mixture leaner ( idling and part throttle ).

The air screw only controls mixture ratio till about 1/4th of throttle, beyond that the needle height in the slide controls the mixture ratio. when your throttle is wide open the mixture ratio is dependent on main jet number a.k.a size and the carb dia ( venturi diameter ) e.g. for the mikuni BS26 its a 26 mm dia venturi.
So if you're feeling the sluggishness somehwere around 70kph the pilot air screw is not to blame, if your intial pickup at part throttle i.e low revs is sluggish most probably your air screw setting is wrong.

. very nice indication of proper mixture is the spark plug insulator, if you have a nice chocolate brown color your mixture is spot on.
. If your plug insulator is white your mixture is lean
. black ,mixture is too rich ( or your piston rings, valve stem oil seals are leaking oil which is causing soot deposition )

Bro, you just said that in opposite way. If you turn clockwise the the air-fuel mixture will become lean and if you turn it anti-clockwise it will become richer.

Let me ask a doubt, when we tune the carb @ 3K aren't we tuning the air-fuel ratio of the main jet ? Can you give a more clear explanation, by tuning aren't we fixing the amount of fuel that should be mixed with air at particular vacuum pressure?

Gud to hear from suzuki..but what's this new "150cc cruiser" ???

Finally the wait is over.....i got my bike's first service done today...
odo reading:700kms
problems faced before service:
1]gear shifting had become very hard.
2]headlight focus[points to sky]
3]Noise from chain.
4]low mileage[<40kmpl]

after service:
1]not solved.
2]adjusted...feels ok now.
3]solved
4]have to check in few days.
I got my bike from svc at 4pm today..i was waiting for this moment to unleash the beast.i was able to reach 105kmph in ecomode at 8k rpms..top end acceleration is great...better than rtr's in my opinion
one more thing i noticed today is,rear wheel rotates when the bike is centre stand,with engine turned on[neutral].even the speedo shows 4-5-6kmph...is this normal?

Lol, we had discussed about this rear wheel rotating in neutral things a month back.. its pretty normal, just take the bike off the centre stand and see if the bike tends to move forward. if it moves forward then the clutch assembly will have to be readjusted. if you dont face problems at signals, then dont worry about it.

I guess all of us had noticed this so its present in all GS's. (may be there in other bikes too)

About the gear shift, its mainly dependent on clutch play, chain tension and quality of engine oil used.

Since the engine oil was just changed, give it 50-100kms and see if the gears become smoother (the oil takes some time to set in).
If not then try adjusting the clutch, i think full clutch gives smoother shifts, but in b'lore riding with full clutch will be a pain

Where did you manage to touch 105 by the way ? i really want to cross 100 atleast once and see how it feels, but cant find any good roads around here.

Max i have touched is 95, and i've been riding GS for 1 year and 4 days now..

@anup you sure about it i thought it was anticlockwise=lean and clockwise = richer any body can confirm this?

and my max speed touched is 114 full throttle open.

Thanks for the info.. i wasnt online for many days so might have missed that discussion..
Try ring roads..u can easily touch 100++ if ur an insane rider like me..lol
i did it today on K.R.Puram hanging bridge[wet road+rain]...

As in the name " piot jet air screw" if you're tightening it , you're reducing the amount of air that goes into the pilot jet. If the amount of air is reduced it will draw more fuel in. Conversely if you're opening it you're allowing more air into the pilot jet reducing the amount of fuel it is drawing.

Even at 3k ..which is roughly say about half of the entire rev range of the engine, the pilot air screw is contributing a small amount. The major contribution in that rev range would be from your main jet.

A carb has different fuel delivery mechanisms at different vaccum levels. At idle and part throttle levels when the slide has lifted a small amount pilot jet controls the mixture, but when the vaccum has increased and slide begins lifting more mixture is controlled by the needle that is connected to the slide. This tapered needle covers the main jet and is connected to the slide, it lifts when the slide is pulled out by engine vaccum ( thats where the constant vaccum (CV carb )term comes in , in simpler carbs as in say a splendor ..the slide is directly connected to the throttle cable that is why if you open the throttle wildly temporarily the engine gets flooded and the bike jerks then picks up speed). There are notches in the needle and the needle height can be adjusted by removing a clip lock on it but you have to open the carb for it.

That's the right place to do during non peak hours
Two months back I did the three digit peak on the same spot