2012 Yamaha Motorsports FX Nytro M-TX 153 Owners Manual - Page 37

Control functions TIP To allow pressure to escape from the pump and the shock absorber, push the button halfway down and hold it. To allow only a small amount of pressure to escape, push the button all the way down and quickly release it. 6. Push the hose connector lock lever down, and then remove the hose connector from the air valve. 1. Air valve cap 1 TIP When removing the connector, the sound of air escaping may be heard, but this is from the pump hose, not the shock absorber. 7. Install the air valve cap. 4. TIP If the shock absorber bottoms too easily or rolls too much during cornering, increase the air pressure by 34 kPa (0.3 kgf/cm², 5 psi). If the shock absorber is too firm and you want a more compliant ride, decrease the air pressure by 34 kPa (0.3 kgf/cm², 5 psi). Rear shock absorber To adjust the air pressure 1. Place the snowmobile on a level surface and apply the parking brake. 2. Lift the rear of the snowmobile onto a suitable stand to raise the drive track off the ground. 3. Remove the air valve cap from the shock absorber. Install the hose connector of the shock absorber pump onto the air valve of the shock absorber, tighten it approximately six turns until the pressure registers on the pump gauge, and then pull the hose connector lock lever up. NOTICE: Do not overtighten the connector onto the air valve as this will damage the connector seal. [ECS00721] 1 2 3 1. Air valve 2. Hose connector 3. Hose connector lock lever TIP If the shock absorber has no air pressure, the gauge reading will be zero. 5. To increase the air pressure, operate the pump a few times. The pressure should increase slowly. If the pressure increases rapidly, check to make sure that the pump is properly connected and tight- 31