Yamaha 2010 FX Nytro FX10X Service Manual page 562

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Table of Contents

High altitude tuning

Atmospheric pressure decreases and engine

output becomes low at high altitude locations.

Because of this, clutch engagement speed and

shifting speed also decrease and unable to

maximize the engine output power. To maxi-

mize the engine output, tuning for increasing

clutch engagement speed and shifting speed

is necessary. This setting is called high altitude

The following changes are usually performed

in high altitude tuning.

• To increase the clutch engagement and shift-

ing speed, changing to a larger spring con-

stant or using lighter weights and rivets.

(decreasing primary sheave thrust)

• Increasing the reduction ratio of the driven

gear/drive gear. (increasing the driving per-

Refer to "HIGH ALTITUDE TUNING".

Engine speed

Speed at maximum output

Distance travelled