TM RACING 250Fi MX, Use And Maintenance Manual

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4 S T R O K E S 4 S T R O K E S 4 S T R O K E S 4 S T R O K E S
CLOSING CABLE
Loosen the counter-nut (4) and tighten or loosen the adjuster (5) until you
obtain the play required. Tighten the adjuster to increase play. Loosen
the adjuster to reduce play. Tighten the counter-nut and make sure the
grip rotates smoothly. Keep in mind that play is reduced slightly when
the tank is mounted.
Reposition the protective caps. Reassemble the tank with conveyors and
seat. Check the grip play.
WARNING
WITH THE ENGINE RUNNING, MAKE SURE THAT THE MINIMUM IDLE SPEED IS
CORRECT AND THAT IT DOES NOT INCREASE WHEN YOU STEER TO THE RIGHT
OR LEFT UP TO THE STOP.
CARBURETTOR (450F SMR/SMM - ALL 530F)
The throttle grip should be adjusted according to the preference of the
rider. However, it must always have at least 4-5 mm of play. To adjust play,
disassemble the seat and the tank with the conveyors. Move the protec-
tive caps (1). Adjust the opening cable (upper) and then the closing cable
(lower). Refer to the information provided on the sheaths.
OPENING CABLE
Loosen the counter-nut (2) and tighten or loosen the adjuster (3) until you
obtain the play required. Tighten the adjuster to increase play. Loosen
the adjuster to reduce play. Tighten the counter-nut and make sure the
grip rotates smoothly. Keep in mind that the play is reduced slightly when
the tank is mounted.
CLOSING CABLE
Loosen the counter-nut (4) and tighten or loosen the adjuster (5) until you
obtain the play required. Tighten the adjuster to increase play. Loosen
the adjuster to reduce play. Tighten the counter-nut and make sure the
grip rotates smoothly. Keep in mind that the play is reduced slightly when
the tank is mounted.
Reposition the protective caps. Reassemble the tank with conveyors and
seat. Check grip play again.
WARNING
DO NOT OPEN AND CLOSE THE GAS GRIP WHEN THE ENGINE IS OFF UNLESS
ABSOLUTELY NECESSARY. IN THIS CASE, NEVER DO SO FOR MORE THAN 1-2
TIMES: EVERY TIME YOU OPEN THE GAS GRIP, THE ACCELERATOR PUMP STARTS
WITH THE RISK OF FLOODING THE ENGINE.
ADJUSTING IDLE SPEED (ALL 250Fi - ALL 450Fi)
Adjusting the idle speed strongly affects the engine start, i.e. an engine
with correct idle speed adjustment will be easier to start than an engine
with an incorrect idle speed adjustment.
Every TM Racing motorcycle comes with idle speed adjustment suitable
for the type of motorcycle. This adjustment can be varied when needed.
With the engine running, sufficiently warm and without touching the
throttle grip, rotate knob (1) on the left side of the motorcycle. Rotate
clockwise to increase the idle speed or rotate anticlockwise to decrease it.
Do not adjust the idle speed too low. If you have a rev counter never lower
the idle speed below 2200 rpm for 250 cc and below 2000 rpm for 450 cc
with the engine warm.
Instead of the rev counter you can use the TM Running diagnosis and
programming “PDA” described in Chapter 5.2.
WARNING
NEVER ADJUST THE MINIMUM IDLE SPEED WITH THE ENGINE OFF AS THE
ENGINE MAY NOT START.
4.3 ENGINE MAINTENANCE
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3
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5
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