Checking/Adjusting The Accelerator Pump; Adjusting The Position Of The Throttle Position Sensor - KTM 400 EXC AUS 2011 Repair Manual

31/CARBURETOR
173
Cbeckin~adjustinllhe
accelerator p'urnp'
Condition
The carburetor and accelerator pump have been removed.
- Check the membrane of damage or brittleness.
>
If the membrane is damaged or brittle:
- Change the membrane.
- Check holes. to ensure that they are free.
>
If the holes are not free:
- Clean the holes.
I
Carburetor cleaner ( .. p. 252)
- Check/set the throttle slide opening. ( .. p. 172)
• Info
I
Adiustment of the play of the accelerator pump affects the starting point of
injection and has no influence on the injection rate or the intensity of the
accelerator pump.
- Check piston rod overhang •.
Guideline
I
Piston rod overhang
I
0.9 ... 1.0 mm (0.035 ... 0.039 in)
>
If piston rod overhang. does not meet specifications:
- Correct the piston rod overhang by turning adjusting screw •.
Ad·ullinl thl lIosition of thllhrottll osition Slnior
• Info
I
The value in the figure is an example.
700064-10
Condition
The carburetor has been removed.
Component temperature: 20°C (68 OF)
- Check/set the throttle slide opening. ( .. p. 172)
- Connect the plus cable of the multi meter to the blue (bu) cable and the ground
cable to the black (bl) cable of the throttle position sensor connector. Measure the
total throttle position sensor resistance R
lol •
Guideline
Total resistance R"" of the throttle valve 4 ... 6 krl
sensor
- Multiply the total throttle position sensor resistance R"" by 0.17. The product is the
variable throttle position sensor resistance R
d ,
for the setting.
- Riot x 0.17
=
R
d ,
(tolerance
±
0.05
kn)
31/CARBURETOR
173
Cbeckin~adjustinllhe
accelerator p'urnp'
Condition
The carburetor and accelerator pump have been removed.
- Check the membrane of damage or brittleness.
>
If the membrane is damaged or brittle:
- Change the membrane.
- Check holes. to ensure that they are free.
>
If the holes are not free:
- Clean the holes.
I
Carburetor cleaner ( .. p. 252)
- Check/set the throttle slide opening. ( .. p. 172)
• Info
I
Adiustment of the play of the accelerator pump affects the starting point of
injection and has no influence on the injection rate or the intensity of the
accelerator pump.
- Check piston rod overhang •.
Guideline
I
Piston rod overhang
I
0.9 ... 1.0 mm (0.035 ... 0.039 in)
>
If piston rod overhang. does not meet specifications:
- Correct the piston rod overhang by turning adjusting screw •.
Ad·ullinl thl lIosition of thllhrottll osition Slnior
• Info
I
The value in the figure is an example.
700064-10
Condition
The carburetor has been removed.
Component temperature: 20°C (68 OF)
- Check/set the throttle slide opening. ( .. p. 172)
- Connect the plus cable of the multi meter to the blue (bu) cable and the ground
cable to the black (bl) cable of the throttle position sensor connector. Measure the
total throttle position sensor resistance R
lol •
Guideline
Total resistance R"" of the throttle valve 4 ... 6 krl
sensor
- Multiply the total throttle position sensor resistance R"" by 0.17. The product is the
variable throttle position sensor resistance R
d ,
for the setting.
- Riot x 0.17
=
R
d ,
(tolerance
±
0.05
kn)