Carburetor Idle Speed - KYMCO MXU 500 User Manual

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. INSPECTION/ADJUSTMENT

Adjust by loosening the valve adjusting

screw lock-nut and turning the adjusting

screw until there is a slight drag on the

thickness gauge.

Valve clearance (when cold):

IN.: 0.1 mm (0.004 in)

EX.: 0.1 mm (0.004 in)

Apply oil to the valve adjusting screw lock-

nut threads and seating surface.

Hold the adjusting screw and tighten the

Special tool:

Valve adjusting wrench A120E00036

Torque: 0.9 kgf-m (9 N-m, 6.5 lbf-ft)

After tightening the lock nut, recheck the

valve clearance.

Install the removed parts in the reverse

order of removal.

CARBURETOR IDLE SPEED

The engine must be warm for accurate

idle speed inspection and adjustment.

Warm up the engine before this operation.

Start the engine and connect a tachometer.

Turn the throttle stop screw to obtain the

specified idle speed.

Idle Speed: 1500±100 rpm

When the engine misses or run erratic,

adjust the pilot screw (refer to the

DISASSEMBLY/INSPECTION/

ASSEMBLY" section in the chapter 5).

Wrench Thickness

Gauge Valve Adjusting

Throttle Stop Screw

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