Zhejiang Qianjiang Motorcycle RKV 200 Service Manual download pdf (Page 132)

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Remove the idling adjusting screws and their springs.

Dismantle mixture screw and its spring.

11. 3. 4 Assembly and installation

Assembly and installation are in the reverse sequence of disassembly.

11. 3. 4 Adjustment of carburetor

Attention: The idling adjusting screws have been adjusted when the carburetor is delivered, so no

adjustment is needed in general. To decompose the carburetor, record the number of rotations for

future combination.

Start and warm for around 3 minutes so that the engine runs at normal operating temperature;

Adjust the idling adjusting screw so that the engine speed is 1,500rpm;

Tighten the mixture adjusting screw completely and do not apply too big force;

Now, the engine flames out (if it does not flame out, check if the air filter connection leaks air,

screws are tightened and air filter air inlet is clogged);

Reversely turn the mixture adjusting screw for one turn;

Restart and adjust the idling adjusting screw so that the speed is 2,000—2,500rpm;

Keep adjusting the mixture screw (counterclockwise) slowly until the engine rotates at its maximum

speed (the screw is withdrawn for 2 turns at its maximum);

Re-adjust the idling adjusting screw so that the engine speed is 1,400±100rpm;

Increase frequency of throttle acceleration to check if the idle speed is stable;

Test emission and make comparison against specified standard.

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Zhejiang Qianjiang Motorcycle RKV 200 Service Manual Page 132