Most of the carburetor related issues and their tuning parts are explained in previous pages of this thread.
Please go through it. It will be useless if we post same information again and again.

Yes , since the grade of Castrol power 1 is supposed to be 15w40 and Active is 20w40 , there will be change in rpm behaviour . But since the change in viscosity is minor , you'd still be able to get away with it without any adjustment to engine .. usually . In my case , since the change was quite big relatively , i.e from 10w30 to 20w40 , I needed to adjust it .. I believe .
Problem is , since I have settled on an annual 2-oil system for my new splendor bike , i.e using 10w30 in winter months and 20w40 rest of the year .... I may have to adjust back and forth everytime too .

I can assure you that we have discussed almost everything under the sun regarding the GS 150r..and then some more as well...

so we should stop/close this thread because as per you as it is useless to post same information again and again??

Today, I saw an advertisement for the Suzuki bikes- Hayate, Slingshot and GS150R on the Times Of India. I remember seeing an ad around the same time last year and reporting it. Suzuki India must be following a 1 ad campaign a year program!

That is one of the reasons for the poor awareness of the consumers about the Hayate and Swish.

And GS offcourse

And oil too presently

Why don't you use 20w40 grade oil whole year?

There will always be something new to ask or share.
Even if you google your query, you could find related or similar discussions in our Tread if there was any. So posting the same information again and again because you don't find anything new is stupidity.

In our area there are more regular advertisement on suzuki bikes, all rolled into one ad and main focus is a knee scraping hayabusa.

High time suzuki brings some method to the chaos at suzuki service centers.

Seen that there was a debate previously regarding getting carb tuned by self versus local versus suzuki service. Local mechanics may not be qualified, but how many suzuki mechanics are qualified engineers? Maybe just suzuki service heads are engineers; the rest working under them are similar to our unqualified local mechanics.

SVCs have better equipment than local mechanics, but the SVC mechanics do not have the patience to address problems. They just want to get rid of the bike as soon as possibe and mark it as service done. They only things they do are waterwash and oil change. The other probs are just passed off unattended.

Here is my experience. My bike got first service at 40 days, 800 km on odo. Second service was due at 90 days, but it had run just 1500 km on odo, so i postponed service. Also, Suzuki service is kind of hard to access. Problem is we have to leave bike early morning by 8:30 to get it in evening. Otherwise, if we leave vehicle after 9:30 a.m, we get it only next day. Meaning no bike for 2 days, spending for transport 2 days, and all work getting postponed.


My bike had done 2185 km on odo and gave it for 2nd service. But my bike is nearly 5 months old, so they considered it as 3rd service and took coupon for 3rd service. They said i lost 2nd free service as i should have come earlier.

Ok, now i got the bike after 2nd service (officially 3rd). Started the bike and to my horror found smoke coming from exhaust. Asked the mechanic, he said such smoke coming from exhaust is normal after service, as they do waterwash and use oil while cleaning sparkplug etc. What to say??

He raised the throttle to high rpms and said see smoke will stop now. Bike was cold started and engine was not warm, so I asked him to reduce throttle. Took the bike from him and let it idle, smoke from exhaust reduced completely within a minute.

I was getting late to work. Took the bike and went to office, getting some sound while riding. Returning in night, i was riding at 60 kmph, noticed some sounds coming from chain, like chain wants to jump off, so slowed down. Next day, noticed that my rear wheel is not turning freely for even 1 full rotation now and getting sounds when i turn wheel. The chain seems to be too tight. It was fine before giving for service, but now after service, this tight chain problem.

Opened the chain case today, just to have a look at the chain. Seems like no lubrication is done whatsoever at service. Just lubricated chain with some white grease and little engine oil. Wheel turns 1 full rotation now, but still getting sound from chain, from near the front sprocket area.

Also, seems like my 2200 km old sprocket is worn out. Or do bike parts get mixed up during service?

Anyway, will take the bike again again today to SVC to get the chain loosened slightly. Problem is they always refuse to do such minor adjustments saying they have lots of vehicles to service today and tell me instead to come tomorrow. And if i go next day, it is the same reply.

Man, one thing is sure, the Gs150r is a good bike, but it is backed by some bad service at suzuki service centers.. Problems seem to crop up because of service. I wish we didnt have to go through so many mandatory services to keep warranty intact.

Its best to serive our vehicles ourself though GS requires less attaintion , for sake of formalities and so called warranty clause, you can give it in the morning and ask to immediately deliver within say 2 hrs and ask to just wash it , sometimes oil change with filter to keep them happy (which most of people themselve do with superior oils available in the market)avoid small complaints which they too avoid , only keep vehicle for major complaints which is out of our scope or local mechanics due to parts).

Its better you maintain your bike and spend little time on her with premilinary activities like cleaning , oiling / greesing , cable/ chain adjustments , you will love your bike more and your bike will respond better , be carefull with complecated setings like carb setting , battery refilling etc.

My bike was perfectly fine before first service. After first service, i found the chain to be very loose; it was hitting chain case on every hump and pothole. It was not possible to continue riding like that. I only went back next day to SVC since bike is new and this problem occurred immediately after first service. After much requesting, they took the bike in and tightened chain within 30 minutes.

But after chain tightening, i found that the wheel would not turn 1 full rotation and the chain was probably tightened too much. I pointed this out and they said it will set after i run it a few km. They had just tightened it, so how to ask them to loosen it a bit again. So, continued riding like that. Probably a mistake.

After first service, I noticed that my bike would make noises from chain if i hit 60 kmph and loose speed pretty quickly too. But i ignored it, because SVC guys said chain needs time to set. Now, after second service at 2200 km, was getting this cut-cut-cut noise from chain. Next day after second service, I greased the chain myself, but problem persisted. Seems like my sprocket is worn out.

This time instead of begging suzuki service to loosen chain, i took it to local mechanic. I just told him about tight rear wheel. He immediately recognized it was a tight chain. He loosened it within 5 min and charged me 10 bucks. He said riding within tight chain will wear out my sprocket. Oh great, I always feared this could happen, as SVC had overtightened chain.

Thanks to overtightening of chain by suzuki SVC after first service at 800 km, my sprocket has probably worn out at 2200 km. After chain has been loosened now, i hope it lasts another 2000 km.

Meanwhile, after chain adjustment by local mechanic, my bike feels more powerful again. It reaches top speeds quickly now. From now on, i will just go to SVC only for oil change and waterwash. The mechanics at SVC are always in hurry and too careless.

Hopefully that was just one stray useless guy the ASC and they don't do this kinda careless work always . Don't worry , the chain kit is very good quality , it's Diamond made AFAIK . Won't wear out so easily . Just keep it correctly slacked and properly lubed from now on .

@ antonysg

For those sort of issues only after 3rd service i opted to go with the local mechanic
My GS is in good condition and no issues at all
feel better with the service of local mechanic (yes i agree all local mechanics aren't good)

am not advising or against SVC but when it comes to my bike i know whozzz better..

i have told this almost 1000 pages back itself so dont wanna repeat again

and as a customer few stuffs only we can do likes of oil change or chain tightening and so on.. the core part of the bike thats the Engine needs to be checked periodically which most of us cant do it on own

Fantastic. Your write up cleared all my doubts about carburetor tuning. It is a solution for our fuel crisis, and the only doubt remaining is about the mileage your bike gives. Some of the GS owners are getting or claiming to be getting better mileage even without any tuning.

Everything except washing and polishing (so called Teflon coating) in the Suzuki showroom and SC are in the control of SMIPL. What the dealer gets is commissions and incentives.
Recruiting a manager, mechanic or sales personal is subject to their approval and they are giving adequate training to each of them.
Mechanics working in the Suzuki SCs are not automobile engineers but are well trained and this is the only difference between them and the roadside mechanics.
Formerly, single viscosity oils were used in vehicles and changing the viscosity according to the ambient temperature was essential. After introduction of multi-weight oils, you can use the oil recommended by the manufacturers throughout the year.

The paint on the rear side panels on my bike seem a notch lower in quality than elsewhere on the bike. It looks slightly faded and a patch of paint has worn off in an area where there is contact between my bag and the panel. This didn't happen on my previous bikes. However since nobody else here has reported such a problem, I'm guessing this issue is limited to my bike.
Planning to wash and polish the bike more regularly to see if it helps.

My intention was to tell that my bike is running well without that so called General Service at SCs..

I do change & topup the oil periodically, lubing the chain, adjusting the chain slackness which helps the bike to be in good shape and healthy.. No worries about the mileage .. Still getting the same mileage in b/w 50 -55kmpl...