To own a bike would be every man’s dream and why not, to have one is an ultimate joy. There is a sense of freedom that only a bike rider can experience of riding bikes. They are a style statement for men and also the decent modes of commuting providing some economy to and from the work.
Any motorbikes we see today are definitely fuel efficient. Let us not talk about the Ducatis and the HDs for sometime; they are not bought for being fuel efficient.
So, bikes in general would ask for a little maintenance and they serve us long for whatever minimum care they receive. However, to keep your bike in ship shape and at optimum performance level, there are certain things that you need to do periodically; adjust or say tune the carburetor.
Carburetion is a little complex subject in bike maintenance only if you didn’t know about it so far. Just a little understanding about it could actually chase your fears far and you can do the fine tuning at the comforts of your home on a regular basis saves on your time and penny and you and your bike will have a long life together.
Carburetor is a device that actually mixes the fuel and air to allow the process of combustion to happen which generates the power. In fact, engines per se would not function without a carburetor. Most bikes made lately are coming with digitalized fuel injectors which are a replacement to carburetors; however, carburetor is still a common thingy in many bikes. It doesn’t hurt to have some idea about carburetors and their tweaking.
If the carburetor is not cleaned and tweaked regularly, then its ability to govern combustion process could be hampered, which results poor run and also poor mileage. Carburetor tweaking ensures that the engine receives right amount of fuel; not too less not too high, just that right amount. Tweaking the carburetor will so ensure fuel economy.
Things needed to carburetor adjustment:
A carburetor cleaner
Soft cotton cloth
Screwdriver
An RPM guage
Using a bike carburetor cleaner(solvent) and take off the settled dust and dirt from your carburetor. See that all ports as well as the jets are cleaned. Then, slowly remove the oil deposits clogging which could deter the smooth idling of engine. For this take a clean cotton cloth and remove the deposits and the cleaner from the carburetor. Never use crude wires to remove deposits; which can actually ruin the calibration that your carburetor is set to.
Start the bike engine and idle it for a while until say the engine gets warmed up. You can figure out the mixture screw which will be present near the barrel on one side. It is actually at right angle to the carburetor barrel and a little below the half of the barrel’s length.
Now remove vacuum hose/tube from the carburetor and fix RPM gauge to the port to which the vacuum hose was attached on the carburetor. The RPM gauge should be able to read RPMs of at least 1400 RPMs.
Using screwdriver slowly turn the mixture screw in a clockwise direction until the engine runs at max; high idling on a bike engine will be 1400 RPMs.
Now with the screwdriver turn the screw anticlockwise just until you hear the idle run to the point where it starts cutting off. Normal RPM will be around 1000.
Remove the RPM gauge and fix the vacuum hose to the vacuum port of the carburetor and ensure if the engine is smooth after removing the RPM gauge. In case you hear that the carburetor cuts out at the idle, just turn the idle screw a little up to a point where it is running at 1000 RPM range.
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i like it
I have a 1969. Last one year iam not used and cared. now every thing corroded .petrol tank leak milege drop. But after one and half year without any hesitation he came with me for a long ride. I changed oil and spark plug fuel tank cleaned little bit. started within fifth touch. milege is very low i thing 15 km. once again i will try.to improve with your suggetion i dont have RPM METER
i have 2009 krizma r bike my bike given 20&25 km/l milege
i am going to highway my mixure jet is lost i am purchse new jet
pls adjustment carburetor
i hv a pulsor 2002 model ,frm last 1 yr itz givng low mileage plz advice me to improve mileage and to make it run faster like new bike without any loud noise as it found in pulssor with age
heloo sir iam very interested in mechanism can u mail me the basic operations about the Carburetor . mail meat nagaprasad1000@gmail.com .this was my request i wil try the same
I HAVE YAMAHA GLADIATOR 2006 MODEL. CAN I CONNECT GAS KIT IN MY BIKE
hi sir i like it your artical sir i have a hero Honda spelenter plus but my bike gives a low millage what to do sir
how can i improve the milage of my bike
just stay at home
Hallo sir, I have passion plus. I want to improve performamnce of my byke so pls give me the detailed process with possible photographs.
pls reply
i have a 1995 model kpajaj 4s champion its givw me a 34km milage after service the engine give me any ideas
sir,
how can i improve my bike milage . i have libero G5.
Hai .am using bajaj xcd 135 .yesterday while driving it stops suddenly even petrol was full . It stops usually like when petrol is going to finish .but bike has enough petrol in it. After 2 mins of stop bike again starts.i want to know what is the cause for that
I am no mechanic but I would like to find tricks to increase the speed of my bike. thank you for answer
Hello sir
I need to know how much amount of fuel can store the discover 125′s carburetor while the engine and fuel valves are turned off
Regards
PRAJEESH
I have Honda stunner PGM-fi 2010 model.
pls give me suggetion to set the carburetor as i get only 45kmpl.
i cant get that where is its air screw.
Thanks a lot
i am using cb unicorn dazzler… fuel efficiency is very low ,,, how to increase mileage by adjusting carburetor
I have a Yamaha SR 250 which I bought second hand . When the weather is cooler and I start the bike it starts runs for a few seconds and then it cuts off . I start the bike with the choke out when this happens. There after the bike will not start with electric starter. I eventual am able to start the bike if I run start down a long hill. Please let me know what the problem could be.
i want to adjust the corborater in suzuki samurai bike how is that
hello!
i’v got suzuki shaolin 5speed……my bikes carburator really working bad nd m really ahead for porting it nd mke it done for more higher end speed……….. plz suggest
Hi
i am a passion pro custmer. i want more about carburter and its tuning .
i want to take some picture in my knowledge about engine of bike .
hello!
i’v got bajaj discover 100cc 5speed……my bikes carburator really working bad nd i want more about carburter and its tuning , fuel efficiency is very low ,,, how to increase mileage by adjusting carburetor, so i want detils
i have yamaha libero G5.Its average is very low. pls sugges me ,how to make it properly good ?
hello sir,
i’v got bajaj discover 150cc 5speed……my bikes carburator really working bad nd i want more about carburter and its tuning , fuel efficiency is very low ,,, how to increase mileage by adjusting carburetor, so i want detils
This is Er.Alok ,your article is fake,the exact trick for tuning is not clear,while rotating screw,when to stop? at max rpm of engine?
I have a Honda CB Shine 125cc(Model 2010).
When I riding my bike it’s runs normally, but i maintain my speed if i reduce and give the pickup, at the time bike was created sum noise even through it was switched off and it’s gives very poor millage(40/L).
Kindly give the solution.
Regards,
M.Kesavan
IT IS NOT SO EASY LIKE U WRRITTEN. IT MAY BE PRACTICE MORE WITH A MECHANICK TO GET MORE KNOWLEDGE,OTHERWHILE BIKE MAY BE DAMAGES…. AND U WRRITEN ABOUT IDLE SCREW ONLY IF WE WARM AT HIGH SPEED TO ADJUST WE ALSO NEED TO ADJUST AIR SCREW ALSO. IT IS NOT NESSASARY RPM METER FOR EXPERT . IN RUNNING WE CAN KNOW CORRECT TUNNING OF CARB,,
IT IS NOT SO EASY LIKE U WRRITTEN. IT MAY BE PRACTICE MORE WITH A MECHANICK TO GET MORE KNOWLEDGE,OTHERWHILE BIKE MAY BE DAMAGES…. AND U WRRITEN ABOUT IDLE SCREW ONLY IF WE WARM AT HIGH SPEED TO ADJUST WE ALSO NEED TO ADJUST AIR SCREW ALSO. IT IS NOT NESSASARY RPM METER FOR EXPERT . IN RUNNING WE CAN KNOW CORRECT TUNNING OF CARB,,
hello sir i am having a Honda unicorn bike for the last few month i am facing the i dealing problem in my bike the race of the engine increases or decreases by it self i have shown to 2 or more service center no one is able to solve the problem i have also changed the clutch wire, acceleration wire,choke wire sir please give me a good replay
Hai sir,
i have pulser 150cc 2009 model. It gives low mailage. Can i change my pulser bike carburator to 100cc bike carburator. If i change which problems i get. Pick up and fast not matter to me. Plz tell me sir….
My bike(pulsar150) gives 50-55 kmpl on highway but only 33-37 on local roads but it differs to 20km
40-45 shd b btr
ride the bike on the speed of 40 to 50 klmph and adjust the mixture screw of the carburator
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Can i replace the main jet of cbr150 with that of unicon for a good milage??
Hai,sir
Am studying diploma in mechanical I am preparing a project work plece some information in carburetor for study project please sir,,,
Good
my bike carbureator’s adjustment scru is jam plz give me some idea to improve mileage