70766 Suzuki RM250–

FUEL SYSTEM 9-9

Jet needle

Lean

Rich

Air/fuel

mixture

SIZE	P/NO.
NECL	13383-37FG0
NEDL	13383-37FP0
NECK	13383-37FF0
NEDK	13383-37FN0
NECJ	13383-37FE0
NEDJ	13383-37FM0
NECW	13383-37FD0
NEDW	13383-37FL0
* NECH	13383-37FC0
NEDH	13383-37FK0
NECG	13383-37FB0
NEDG	13383-37FJ0
NECF	13383-37FA0
NEDF	13383-37FH0

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(2) Adjustment of main system With the throttle opened 3/4 to fuli, make main system adjustment monitoring the air/fuel mixture con-dition after completion of slow system settings.

* Make surÄ™ to adjust the main system before adjusting the intermediate system.

Ex. Main jet #172

If air/fuel mixture is rich, replace it with #170 main jet. If air/fuel mixture is lean, replace it with #175 main jet.

NOTĘ:

SHADED: STANDARD

*:    INCLUDED ALTERNATE PARTS \

NONĘ:    OPTIONAL PARTS

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® Adjustment of intermediate system

Monitor the air/fuel mixture condition and adjust the •Intermediate system by changing the needle clip position.

@ FinaÅ‚ adjustment of slow system After a proper standard setting has been obtained by the procedurÄ™ ® through fine tune the carbu-retor according to the actual race conditions.

1) Adjust the air/fuel mixture by turning the air screw with i n 1/2 - 2 tum s out.

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© Adjustment of slow system

1)    Setthe air screw as specified; V> \\.>

2)    See if the selected slow jet,js\correct'6r not by

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judging the air/fuel mixture) If air/fuel mixture is rich. replace it with smaiter^one. If air/fuel mix-ture is lean_T replace it with largerone.

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Ex. Slow jet #50

If air/fuel mixture is rich, replace it with #48 slow jet. If air/fuel mixture is lean, replace it with #52 slow jet.

1/2turnout -	i,
3/4 turn out
1 turn out
1 and 1/4 turns out
1 and 1/2 turns out
1 and 3/4 turns out
2 turns out i	f

2) If the mixture can not be adjusted by the air screw within 1/2-2 turns out rangÄ™, readjust the slow system ©.

(D FinaÅ‚ adjustment of intermediate system Fine tune the intermediate system by changing the needle type and clip position.