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4 S T R O K E S
4 S T R O K E S
51
4 S T R O K E S
4 S T R O K E S
CORRECTING CHAIN TENSION (SMM)
Loosen the two locking nuts (1) of the rear eccentric hub to allow the hub
to rotate on its axis.
Use the specific TM tool, code F50806 (2), to rotate the hub until the chain
reaches its correct tension. Tighten the two locking screws by 30 Nm.
Given the eccentric movement system, the alignment of the rear wheel
does not change as it does not require adjustments.
At the same time, by rotating the hub you can notice a slight height
variation of the rear wheel axis and, as a result, of the rear part of the
motorcycle. This can be compensated by varying the projection of the fork
rods from the upper plate. For example, if the back of the motorcycle has
lifted by 5 mm due to chain adjustment, we recommend decreasing the
projection of the fork rods by 5 mm to lift the front part and restore the
original motorcycle level.
We recommend using the TM tool, code F50806, with two M8 screws and
two nuts in order to rotate the hub on the eccentric by inserting the two
screws inside the two holes of the hub.
WARNING
- IF YOU DO NOT HAVE ADEQUATE EXPERIENCE, WE RECOMMEND REFERRING
TO A TM AUTHORISED WORKSHOP TO PERFORM THE OPERATION.
CHAIN MAINTENANCE
The life span of the chain depends above all on maintenance. Chains
without an O-ring must be cleaned with oil and then immersed in hot oil
(specific for chains) or be treated with spray (specific for chains). Main-
tenance of chains with O-ring is minimised. The best cleaning method is
using plenty of water. Never use brushes or solvents to clean the chain.
Once the chain is dry, use a spray specific for chains with O-ring.
PREVENT THE LUBRICANT FROM REACHING THE REAR TYRE AND THE BRAKE DISC,
OTHERWISE THE REAR WHEEL’S ADHERENCE TO THE GROUND AND THE REAR
BRAKE ACTION COULD BE CONSIDERABLY REDUCED AND YOU COULD EASILY LOSE
CONTROL OF YOUR MOTORCYCLE.
WARNING
WHEN ASSEMBLING THE CHAIN JUNCTION, THE CLOSED PART MUST ALWAYS
BE IN THE DIRECTION OF TRAVEL. ALWAYS CHECK THE WEAR OF THE PINION,
SPROCKET AND CHAIN GUIDES. REPLACE THESE COMPONENTS, IF REQUIRED.
CHAIN WEAR
Carefully follow the instructions below to check the state of wear of the
chain: Shift into neutral gear, pull the upper part of the chain upwards
applying a force of 10-15 Kg (see figure). Now measure the distance of
18 links on the lower part of the chain. If the distance exceeds 272 mm
we recommend replacing the chain. Chains do not wear evenly therefore
repeat the measurement in different points on the chain.
When a new chain is assembled we recommend also replacing the pinion
and the sprocket. A new chain wears faster when installed on old and
worn pinions.
WARNING
WHEN REPLACING THE CHAIN, PINION, AND SPROCKET WE RECOMMEND AS-
SEMBLING NEW SELF-LOCKING NUTS FOR THE SPROCKET AND USING A CRISS-
CROSS TIGHTENING SEQUENCE. TIGHTENING TORQUE OF THE NUTS IS 35 NM.
1
2
DANGER
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 ...