Yamaha RX10RW Owner's Manual

Also see for RX10MSW: Supplementary service manual

Contents

Yamaha RX10RW Owner's Manual Manual pdf 66 page image

8-11ESU04540Adjusting the high-altitude settingsOperating at high altitude reduces the performance of agasoline engine about 3% for every 305 m (1,000 ft) ofelevation. This is because there is less air as altitudeincreases. Less air means less oxygen available for com-bustion.Your snowmobile utilizes an electronic fuel injection sys-tem that delivers the optimal air/fuel ratio required by theengine. Therefore, the fuel injection system does notneed to be adjusted, even for operation at high altitude.Remember:Less air at higher altitude means there is less horse-power available, even with the optimal air/fuel ratio.Expect acceleration and top speed to be reduced athigher altitudes.To overcome operating with less power at high altitudes,your snowmobile may also require different settings forthe drive chain gears and V-belt clutch to avoid poor per-formance and rapid wear. If you plan to operate yoursnowmobile at an altitude different from the area whereyou bought it, be sure to consult a Yamaha dealer. Thedealer can tell you if there are any changes necessaryfor the altitude where you plan to ride.CAUTION:@The drive chain gears and V-belt clutch should beadjusted when operating above a high altitude of900 m (3,000 ft). Consult a Yamaha dealer.@ESU00348Adjusting the valve clearanceThe valve clearance changes with use, resulting inimproper air-fuel mixture and/or engine noise. To preventthis from occurring, the valve clearance must be adjustedby a Yamaha dealer at the intervals specified in the peri-odic maintenance chart.E_8fp.book Page 11 Tuesday, March 28, 2006 4:35 PM