Checking The Jet Needle; Checking The Float Needle Valve; Checking/Setting The Float Level (50 Sx); Carburetor - Adjusting Idle Speed (50 Sx) - KTM 50 SX Repair Manual
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Also See for 50 SX:
- Owner's manual (91 pages) ,
- Setup instructions (19 pages) ,
- Owner's handbook manual (26 pages)
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31/CARBURETOR
Checking the jet needle
18.16
Checking the float needle valve
18.17
Checking/setting the float level (50 SX)
18.18
Carburetor - adjusting idle speed (50 SX)
18.19
Condition
The jet needle has been removed.
–
Check the jet needle for bending and wear of the coating.
»
If the jet needle is bent, or the coating is damaged or worn:
–
Change the jet needle.
–
Check the needle clip for tightness.
»
If the needle clip is loose:
–
Change the needle clip or jet needle.
300924-10
Condition
The float needle valve has been removed.
–
Check the float needle valve including the valve seat for deposits.
»
If there are deposits:
–
Clean the valve seat. Clean or change the float needle valve.
Carburetor cleaner (
–
Check the float needle valve for wear and the sealing area for notches.
»
If the sealing area is damaged or worn:
–
Change the float needle valve.
700057-10
Condition
The carburetor and float chamber have been removed.
–
Tilt the carburetor sideways, preventing the fulcrum pin from falling out.
–
Tilt the carburetor until the float is resting against the float needle valve, but the
float needle valve is not being pressed together.
»
If the edge of the float is not parallel (max. 1° deviation upwards) to the sealing
area of the float housing in this position:
–
Adjust the float level by bending float lever
300915-10
–
Screw in the idle adjusting screw
setting.
Guideline
Idle mixture adjusting screw
Open
–
Run the engine until warm.
Guideline
Warm-up time
700520-01
Danger
Danger of poisoning Exhaust gases are poisonous and inhaling them may
result in unconsciousness and/or death.
–
When running the engine, always make sure there is sufficient ventila-
tion, and do not start or run the engine in an enclosed space without an
effective exhaust extraction system.
p. 144)
.
until it stops and then to the prescribed basic
3 turns
≥ 5 min
108
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