Throttle Valve - Sym JET 4 R 50 Series Service Manual

4. Fuel System

Throttle Valve

Carburetor upper part
Removal
Remove the body cover.
Remove the carburetor upper part, throttle valve
spring and sealed cap.
Remove the throttle valve cable from the throttle
valve.
Remove needle clamp and fuel needle.
Inspection
Sealed cap
Throttle valve spring
Needle clamp
Throttle valve cable
Fuel needle clip
Fuel needle
Carburetor upper part
Washer
Throttle valve
Installation
Place the fuel needle onto the throttle valve and clip it with needle clamp.
Install the sealed cap, carburetor upper part, and throttle valve spring.
Connect the throttle valve cable to the throttle valve.
Install the throttle valve into the carburetor body.
Caution
Align the groove inside the throttle valve with the throttle stopper screw of the carburetor body.
Tighten the carburetor upper part.
Adjust the free play of throttle valve cable.
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