Adjusting the carburetor on a Suzuki Sepia scooter

Cars admin26.02.2020

The Japanese scooter Suzuki Sepia is considered a fairly popular model in Russia and other countries, in particular due to its attractive appearance and simple design of the engine and other parts. But problems with this scooter are quite common and are caused by malfunctions of such components as the CPG, carburetor and variator. It is important to carefully monitor their condition to prevent damage. As for the carburetor, the Mikuni carburetor is used here; the Suzuki Sepia is ideal for this carburetor model, which is also used on other equipment. In particular, you can see a similar model on the no less famous Suzuki Adress scooter. The carburetor is characterized by its simple design, good quality and the ability to quickly adjust. But judging by the frequent problems of owners, it will be extremely difficult to adjust the carburetor for optimal operation of the scooter; the entire procedure will have to be carried out exactly according to the specified rules. If you are the owner of a Suzuki Sepia, get ready to clean the carburetor frequently, because its location is so inconvenient that the carburetor becomes clogged with dust very often. Below is a carburetor setting option.

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In order for a scooter engine to operate efficiently and steadily, it needs the correct fuel mixture, which is prepared in the carburetor. Depending on the condition of the engine, cylinder volume, quality of gasoline and other factors individual for each scooter, additional carburetor adjustment may be required.

Before getting down to business, it is strongly recommended to put things in order in the fuel system, namely: clean the carburetor and air filter, and also adjust the fuel level in the float chamber.

The carburetor should only be adjusted on a well-warmed engine. That is, before setting up, you need to drive the scooter for 10-15 minutes.

The carburetor usually has two adjustment screws. The smaller one is the mixture quality screw. The larger one is the idle speed screw. However, there may not be a mixture quality screw - then the quality adjustment is carried out by manipulating the throttle needle.

The factory settings are as follows: the quality screw is unscrewed by 1.5-2 turns, the idle screw is unscrewed by 2.5 turns. What does it mean? This means that the screws must first be tightened clockwise until they stop, and then unscrewed back the appropriate number of turns. It is from these initial settings that you should begin tuning. And in principle, if at the same time the engine runs stably and the scooter accelerates without failure and to maximum speed, you don’t have to adjust anything in particular. But if this is not the case, then adjustments cannot be avoided.

So, put the scooter on the stand. The motor must be running (and it must be warmed up before tuning).

Unscrew the quality screw 2 turns. Now you need to adjust the idle speed. Turn it slowly (clockwise) - the engine speed will increase. At some point the clutch will engage and the rear wheel will begin to rotate. Then turn the screw back a quarter turn.

Scooter SUZUKI LETS 2

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Description

Characteristics

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Additional description of the SUZUKI LETS 2 scooter:

For lovers of novelty, we offer the suzuki let s 2 scooter - having appeared on the domestic market quite recently, it has already gained sufficient popularity and has proven itself to be an excellent option for leisure time or as an assistant during everyday work. Let's see how this popularity was won:

  • maximum speed - 60 km/h
  • fuel consumption - 1.8 per 100 km
  • weight - 68kg
  • single cylinder engine
  • suzuki lets2 scooter has an air cooling system

As you can see, there is nothing extraordinary about this scooter, but this is precisely why it wins the hearts of buyers. The unique design also cannot be ignored - Suzuki has always been famous for its catchy and stylistically new models, and the Suzuki Lets 2 scooter is no exception. If for some reason technical characteristics are not very important to you, then in terms of style and ergonomics this scooter will be in first place, and you can be convinced of this just by looking at the picture.

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How to adjust a scooter's carburetor

In order for a scooter engine to operate efficiently and steadily, it needs the correct fuel mixture, which is prepared in the carburetor. Depending on the condition of the engine, cylinder volume, quality of gasoline and other factors individual for each scooter, additional carburetor adjustment may be required.

Before getting down to business, it is strongly recommended to put things in order in the fuel system, namely: clean the carburetor and air filter, and also adjust the fuel level in the float chamber.

The carburetor should only be adjusted on a well-warmed engine. That is, before setting up, you need to drive the scooter for 10-15 minutes.

The carburetor usually has two adjustment screws. The smaller one is the mixture quality screw. The larger one is the idle speed screw. However, there may not be a mixture quality screw - then the quality adjustment is carried out by manipulating the throttle needle.

The factory settings are as follows: the quality screw is unscrewed by 1.5-2 turns, the idle screw is unscrewed by 2.5 turns. What does it mean? This means that the screws must first be tightened clockwise until they stop, and then unscrewed back the appropriate number of turns. It is from these initial settings that you should begin tuning. And in principle, if at the same time the engine runs stably and the scooter accelerates without failure and to maximum speed, you don’t have to adjust anything in particular. But if this is not the case, then adjustments cannot be avoided.

So, put the scooter on the stand. The motor must be running (and it must be warmed up before tuning).

Unscrew the quality screw 2 turns. Now you need to adjust the idle speed. Turn it slowly (clockwise) - the engine speed will increase. At some point the clutch will engage and the rear wheel will begin to rotate. Then turn the screw back a quarter turn.

Now you need to test how the scooter will behave when riding. Accelerate on a flat road.

  • If the scooter accelerates sluggishly, it means the mixture is not rich enough. Then tighten (clockwise) the mixture quality screw a quarter or half a turn. At the same time, the mixture will become richer (there will be less air in it, more gasoline).
  • If the scooter accelerates normally, but not to the maximum, then the mixture is over-rich. In this case, you need to unscrew (counterclockwise) the mixture quality screw a quarter or half a turn to lean the mixture.

If you have turned the mixture quality screw, then you need to adjust the idle speed using the method described above.

With an ideal setting, the scooter should accelerate without dips or jerks, stably, and reach maximum speed.

Please note: This article and the images in it are subject to copyright. Partial or complete reproduction on other resources without permission is prohibited.

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Suzuki Lets Ii as for stunt??

#1 (AMD)MK_Mirail

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  • Up of the page up there ^

Other answers in this thread

#2 Stasmor

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(AMD) MK_Mirail (10.1.2008, 0:48) wrote:
I want it cheap, cheerful and so it burns - BUY A JOG. he's not worth it. IMHO

  • Up of the page up there ^

#3 Mikha+Suzuki

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  • Up of the page up there ^

#4 paiton-bc

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Mikha+Suzuki (10.1.2008, 20:37) wrote:
Post edited by paiton-bc: January 10, 2008 - 19:35

  • Up of the page up there ^

#5 Mikha+Suzuki

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paiton-bc (10.1.2008, 19:51) wrote:

  • Up of the page up there ^

#6 Stasmor

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Mikha+Suzuki (10.1.2008, 20:22) wrote:
The issue of design is controversial for everyone. For example, I think that in terms of design, no Scoot can compare with Aprilka SR. this is my opinion. I never liked Lets, especially the one with the big headlight at the bottom of the muzzle. I would say it’s an abomination.. And in terms of ride comfort, the Letsik doesn’t reach, for example, the second Aprio. By the way, what kind of fork does the Letsik have - like a spring with grease? I can’t drive a Suzuki at all and don’t want to after I tried Yamahas and Italians. although the first scoot was the Sepia ZZ III, and I considered it the most comfortable scoot.

  • Up of the page up there ^

#7 paiton-bc

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Mikha+Suzuki (10.1.2008, 21:22) wrote:
a zero-speed lets butterfly costs about 1100 euros and a jog rr costs about 2800 euros.

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