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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
REAR SUSPENSION LINKAGE (A)
The rear suspension of all TM motorcycles is provided with a rod and
rocker mechanism that progressively modifies the leverage ratio be-
tween the wheel and shock absorber.
This mechanism works on the bearings, which must be cleaned and
greased at the scheduled intervals to keep suspension operation ef-
ficient.
When washing the motorcycle with high pressure cleaners do not direct
the jet on the suspension linkage.
CHECKING CHAIN TENSION
Put the motorcycle up on the centre stand to check the chain tension.
Push the chain upwards at the end of the drive chain guide.
The upper part of the chain must be taut. The distance between the
swing arm and the lower part of the chain (A) must be about 10-15 mm.
Adjust the tension, if required.
- IF THE CHAIN IS TOO TIGHT, THE FINAL TRANSMISSION COMPONENTS
(CHAIN, PINION, SPROCKET AND REAR WHEEL BEARINGS) ARE GREATLY
STRESSED. IN ADDITION TO EARLY WEAR, IN EXTREME CASES, THE CHAIN
OR THE SECONDARY GEARBOX SHAFT CAN BREAK.
- INSTEAD, IF THE CHAIN TENSION IS INSUFFICIENT IT CAN JUMP OFF THE
PINION AND LOCK THE REAR WHEEL OR DAMAGE THE ENGINE.
- IN BOTH CASES YOU CAN EASILY LOSE CONTROL OF YOUR MOTORCYCLE.
CORRECTING CHAIN TENSION (EN/MX/SMR/SMX)
Loosen nut (1) of the wheel pin and counter-nuts (2) and turn adjustment
screws (3) to the right and left by the same measurement. To increase
the chain tension loosen the adjustment screws. To decrease the chain
tension tighten the adjustment screws. Reach the correct tension of
the chain.
To align the rear wheel correctly, the marks (4) on the right and left
chain tensioner must be in the same position as the reference marks
(5). Tighten the counter-nuts of the adjustment screws. Before locking
the wheel pin nut, make sure that the chain tensioners (6) are resting on
the heads of the adjustment screws and that the rear wheel is aligned
with the front wheel.
Tighten the wheel pin nut by 80 Nm.
WARNING
- IF YOU DO NOT HAVE A TORQUE WRENCH FOR ASSEMBLING, HAVE THE
TIGHTENING TORQUE CHECKED BY A SPECIALISED TM WORKSHOP AS SOON
AS POSSIBLE.
AN INCORRECTLY TIGHTENED WHEEL PIN MAY MAKE THE MOTORCYCLE
UNSTABLE.
DANGER
A
10-15 mm
3
2
6
4
5
1
4.2 CHASSIS MAINTENANCE
Summary of Contents for 250Fi MX
Page 1: ...www tmracing it USE AND MAINTENANCE MANUAL 4 STROKES USE AND MAINTENANCE ...
Page 2: ...2 4 T E M P I 4 T E M P I ...
Page 8: ......
Page 9: ...1 VEHICLE IDENTIFICATION ...
Page 11: ...4 S T R O K E S 11 4 S T R O K E S 2 CONTROL COMPONENTS ...
Page 21: ...4 S T R O K E S 21 4 S T R O K E S 3 USE INSTRUCTIONS ...
Page 39: ...4 S T R O K E S 39 4 S T R O K E S 4 MAINTENANCE ...
Page 81: ...4 S T R O K E S 81 4 S T R O K E S 5 DIAGNOSIS ...
Page 87: ...4 S T R O K E S 87 4 S T R O K E S 6 TECHNICAL DATA ...
Page 94: ...94 4 S T R O K E S 4 S T R O K E S ...
Page 95: ...4 S T R O K E S 95 4 S T R O K E S 7 WIRING DIAGRAMS ...
Page 96: ...96 4 S T R O K E S 4 S T R O K E S 7 1 LIGHTS AND ACCESSORIES WIRING DIAGRAM EN SMR SMM ...
Page 97: ...4 S T R O K E S 97 4 S T R O K E S 7 2 ENGINE WIRING DIAGRAM 250Fi MX SMX 450Fi MX SMX ...