MAINTENANCE WORK ON CHASSIS AND ENGINE 55
9.71Changing the ignition curve
Change the ignition curve from Performance to Soft.
– Disconnect plug connection . (Figure B00029-10 p. 54)
Soft – better rideability
Change the ignition curve from Soft to Performance.
– Connect plug connection . (Figure B00029-10 p. 54)
Performance – better performance
9.72Engine characteristic - auxiliary spring (250 SX)
B00056-10
The auxiliary spring is located on the right side of the engine below the water pump
cover.
Possible states
• Auxiliary spring with yellow marking – Auxiliary spring mounted at the factory with
medium tuning (standard) for good rideability.
• Auxiliary spring with green marking – Auxiliary spring contained in the separate
enclosure for softer performance.
• Auxiliary spring with red marking – Auxiliary spring contained in the separate
enclosure for more aggressive performance.
The engine characteristic can be influenced by different spring strengths of the auxil-
iary spring .
9.73Engine characteristic - adjusting the auxiliary spring x (250 SX)
Warning
Danger of burns Some vehicle components get very hot when the vehicle is in use.
– Do not touch hot components such as exhaust system, radiator, engine, shock absorber and brakes. Allow these compo-
nents to cool down before starting work on them.
– Tilt the motorcycle approx. 45º to the left and fix it in this position.
B00057-10
– Remove screws .
B00056-11
– Take locking cap , adjusting spring , auxiliary spring and spring insert out
of the clutch cover.
– Pull both springs out of the spring insert.
B00058-10
– Mount the required auxiliary spring and adjusting spring and slide them into
the clutch cover together.
Auxiliary spring with yellow marking (54837072300)
Auxiliary spring with green marking (54837072100)
Auxiliary spring with red marking (54837072000)
The notch in the spring insert engages in the angle lever.
Info
It is important that screw is not turned as this would be detrimental to
the engine characteristic.
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