Adjustment around the engine
Idle speed adjustment of carburetor
Throttle screw
Carburetor drain screw Air screw
The throttle screw and air screw are used to adjust the idle
speed of the carburetor. The steps are as follows:
1.Turn the air screw clockwise until it reaches the top of its
stroke and reverse one and a quarter turns;
2.Adjust the throttle screw to ensure that the engine can run at a
certain speed when the throttle handle is completely relaxed;
3.Adjust throttle screw to reduce engine speed as much as
possible;
4.Adjust the air screw to make the engine speed as high as
possible;
5.Repeat the above steps until you get a satisfactory speed;
6.Check that the throttle cable if it is working properly.
Danger:
Driving a motorcycle with a broken throttle cable is
certainly a very dangerous act. A normal throttle cable should
have at least 10mm free travel. Start the engine and turn the
handlebars left and right. If the engine stalls or accelerates due
to the movement of the handlebars, the throttle cable should be
improperly adjusted or damaged. Make sure the throttle cable
is normal before driving the motorcycle.
Clean the carburetor
The carburetor retains a portion of fuel after each ride. Therefore, the carburetor should be cleaned after each ride
to avoid oil dirt, which affects the use of the carburetor. Carburetor cleaning methods are as follows:
1.A container is placed below the carburetor for receiving fuel oil
2.Close the oil tank switch
3.Unscrew the discharging bolt of the carburetor and wait for the fuel to flow out.
4.After the fuel is discharged, screw back the discharging bolt.
Check shift lever position
Shift head
Check the shift lever as follows:
1.Set up the vehicle so that the center surface of the tire is
vertical to the ground.
2.The line of sight is same level with the pedal to observe the
position of the shift head
3.The shift head should be same level with or slightly below the
pedal.
If the shift head is higher than the pedal, the shift head should
be adjusted downward; If the shift head is too much below the
pedal, the shift head should be adjusted upward.
Adjust the position of the shift lever
