Yamaha Rx 1 User Guide
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7-10 CAUTION:@ Do not shift from “FWD” to “REV” or from “REV” to “FWD” while the snowmobile is moving. Otherwise, the drive system could be damaged. @ NOTE:@ The reverse buzzer beeps while the shift lever is in reverse. @ 2. Release the parking brake by moving the parking brake lever to the right. 3. Press the throttle lever slowly to move the snowmo- bile. 4. Turn the handlebar in the desired direction. 5. Squeeze the brake lever to stop the snowmobile. 6. Apply the parking brake by moving the parking brake lever to the left. ESU00136 Stopping the engine Turn the main switch to the “OFF” position to stop the engine. 1“OFF” WARNING@ Push down the engine stop switch to stop the engine in an emergency. Make sure that the key is removed from the main switch whenever the operator leaves the snow- mobile, to prevent accidental starting. @ U8FA11.book Page 10 Thursday, April 3, 2003 4:09 PM
7-11 ESU00367 Transporting When transporting your snowmobile on a trailer or in a truck, observe the following recommendations to help protect it from damage: Make sure that the fuel level in the fuel tank is lower than the bottom of the carburetors. Otherwise, the vibration and bumps from the road surface could make it possible for fuel to flow through the carbure- tors into the cylinders. This can result in “hydrostatic lock,” a condition where the engine cannot rotate because of fuel accumulated in the engine. Severe engine damage can result from hydrostatic lock. When possible, the fuel tank should be empty during transportation, especially if the trip takes longer than 30 minutes. If transporting the snowmobile in an open trailer or truck, put a tight fitting cover on the snowmobile. A cover specifically designed for your snowmobile is best. This will help keep foreign objects out of the cooling vents in the shroud, and also help protect the snowmobile against damage from debris on the road. If transporting the snowmobile in an open trailer or truck in areas where road salt is used, coat metal suspension surfaces lightly with oil or another pro- tectant. This will help protect against corrosion. Be sure to clean the snowmobile when you get to your destination to remove any corrosive salts. U8FA11.book Page 11 Thursday, April 3, 2003 4:09 PM
8-1 ESU00139 8-PERIODIC MAINTENANCE ESU00140 Periodic maintenance chart Regular maintenance is most important for best performance and safe operation.CD-01E Item RemarksPre- operation check (Daily)Initial 1 month or 800 km (500 mi) (40 hr)Every Page Seasonally or 3,200 km (2,000 mi) (160 hr) Spark plugsCheck condition. Adjust gap and clean. Replace if necessary.8-4–8-5 ∗Valve clearanceCheck clearance. Adjust clearance when engine is cold.Every 40,000 km (25,000 mi) 8-10 Engine oilCheck oil level. 6-2–6-3 ∗Replace. ∗Engine oil filter cartridgeReplace. Every 20,000 km (12,000 mi) Fuel Check fuel level. 6-1–6-2 ∗Fuel filterCheck condition. Replace if necessary. ∗Fuel lineCheck fuel hose for cracks or damage. Replace if necessary. Engine coolantCheck coolant level. 6-4, 8-13–8-14 ∗Air bleed the cooling system if necessary.8-13 CarburetorCheck throttle lever operation. 5-2, 6-5 ∗Adjust the jets.Whenever operating condition (elevation/temperature) is changed. Engine stop switchCheck operation. ∗Repair if necessary.5-10 Throttle override system (T.O.R.S.)Check operation. ∗Repair if necessary.5-3, 6-5 Throttle leverCheck operation. ∗Repair if necessary.5-2, 6-5 ∗Exhaust systemCheck for leakage. Tighten or replace gasket if necessary. ∗ It is recommended that these items be serviced by a Yamaha dealer. U8FA11.book Page 1 Thursday, April 3, 2003 4:09 PM
8-2 Drive guardCheck for cracks, bends or damage. ∗Replace if necessary.5-12, 6-7 V-beltCheck for wear and damage. Replace if necessary.6-7, 8-15–8-17 Drive track and idler wheelsCheck deflection, and for wear and damage. ∗Adjust/replace if necessary.6-8,8-28–8-30 Slide runnersCheck for wear and damage. 6-8 ∗Replace if necessary. Brake and parking brakeCheck operation and fluid leakage. 5-10–5-11, 6-6–6-7 8-19–8-20 ∗Adjust free play and/or re- place pads if necessary. ∗Replace brake fluid. See NOTE on page 8-3. 8-20 ∗Disc brake installationCheck for slight free play. Lubricate shaft with specified grease as required.Every 1,600 km (1,000 mi) Drive chain oilCheck oil level. 8-17–8-18 ∗Replace. Drive chainCheck deflection. ∗Adjust if necessary.Initial at 500 km (300 mi) and every 800 km (500 mi) thereafter.8-18 Skis and ski runnersCheck for wear and damage. 6-9 ∗Replace if necessary. Steering systemCheck operation. 6-9 ∗Adjust toe-out if necessary. Strap (RX10M/RX10MS)Check for damage. ∗Replace if necessary. LightsCheck operation. Replace bulbs if necessary.6-9, 8-33 Item RemarksPre- operation check (Daily)Initial 1 month or 800 km (500 mi) (40 hr)Every Page Seasonally or 3,200 km (2,000 mi) (160 hr) ∗ It is recommended that these items be serviced by a Yamaha dealer. U8FA11.book Page 2 Thursday, April 3, 2003 4:09 PM
8-3 NOTE:@ Brake fluid replacement: 1. When disassembling the master cylinder or caliper cylinder, replace the brake fluid. Normally check the brake fluid level and add the fluid as required. 2. On the inner parts of the master cylinder and caliper cylinder, replace the oil seals every two years. 3. Replace the brake hose every four years, or if cracked or damaged. @ ∗Primary and second- ary clutchesCheck engagement and shift speed. Adjust if necessary. Whenever operating elevation is changed. Inspect sheaves for wear/ damage. Inspect weights/rollers and bushings for wear-for primary. Inspect ramp shoes/bushings for wear-for secondary. Replace if necessary. Lubricate with specified grease. ∗Steering column bearingLubricate with specified grease.8-32 ∗Ski and front suspensionLubricate with specified grease.8-32 ∗Suspension componentLubricate with specified grease.8-32 ∗Parking brake cable end and lever end/ throttle cable endLubricate with specified grease.8-32 Check cable damage. Replace if necessary. Shroud latchesMake sure that the shroud latches are hooked.5-12 Fittings and fastenersCheck tightness. ∗Repair if necessary.6-10 Tool kit and recom- mended equipmentCheck for proper placement. 6-10 Item RemarksPre- operation check (Daily)Initial 1 month or 800 km (500 mi) (40 hr)Every Page Seasonally or 3,200 km (2,000 mi) (160 hr) ∗ It is recommended that these items be serviced by a Yamaha dealer. U8FA11.book Page 3 Thursday, April 3, 2003 4:09 PM
8-4 ESU00376 Tool kit The owner’s tool kit has the tools which are sufficient for most periodic maintenance and minor repair. A torque wrench is also necessary to properly tighten nuts and bolts. 1Tool kit CAUTION:@ Before starting the engine, make sure that the tool kit is firmly seated in the holder and is closed securely. @ NOTE:@ If you do not have a torque wrench available during a service operation requiring one, take your snowmobile to a Yamaha dealer to check the torque settings and adjust them if necessary. @ ESU00368 Spark plug inspection The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indi- cate the condition of the engine. Check the coloration on the white porcelain insulator around the center electrode. The ideal coloration at this point is a medium to a light tan color for a snowmobile that is being ridden normally. If a spark plug shows a distinctly different color, there could be something wrong with the engine. For example, a very white center electrode porcelain color could indi- cate an intake track air leak or carburetion problem for that cylinder. Do not attempt to diagnose such problems yourself. Instead, take the snowmobile to a Yamaha dealer for inspection and possible repairs. You should periodically remove and inspect the spark plug because heat and deposits will cause a spark plug to slowly break down and erode. Consult a Yamaha dealer before chang- ing to a different type of spark plug. Specified spark plug: · R · CR9E (NGK) or CR9E (NGK) U8FA11.book Page 4 Thursday, April 3, 2003 4:09 PM
8-5 Spark plugs are produced in several different thread lengths. The thread length or reach is the distance from the spark plug gasket seat to the end of the threaded portion. If the reach is too long, overheating and engine damage may result. If the reach is too short, spark plug fouling and poor performance may result. Also, if the reach is too short, carbon will form on the exposed threads resulting in combustion chamber hot spots and thread damage. Always use a spark plug with the speci- fied reach. Before installing any spark plug, measure the electrode gap with a wire thickness gauge and adjust to specifica- tion. When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. CAUTION:@ Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration. @ Spark plug reach a: 19.0 mm (0.75 in) Spark plug gap b: 0.7–0.8 mm (0.028–0.031 in) Spark plug tightening torque: 12.5 Nm (1.25 m·kgf, 9 ft·lb) U8FA11.book Page 5 Thursday, April 3, 2003 4:09 PM
8-6 ESU00370 Engine idle speed adjustment CAUTION:@ Be sure to have a Yamaha dealer make this adjustment. Make sure that the throttle lever moves smoothly. Make sure that the carburetor is synchronized first. @ 1. Start the engine and warm it up. NOTE:@ Refer to the “Starting the engine” section. @ 2. Turn the throttle stop screw 1 in or out to adjust the engine idle speed. ESU00147 Throttle cable adjustment CAUTION:@ Be sure to adjust the engine idle speed first. @ 1. Loosen the locknut. 2. Turn the adjuster in or out until the proper throttle lever free play is achieved. 1Locknut 2Adjuster 3. Tighten the locknut. Standard engine idle speed: 1,350 ± 100 r/min Throttle lever free play a: 2.0–3.0 mm (0.08–0.12 in) U8FA11.book Page 6 Thursday, April 3, 2003 4:09 PM
8-7 ESU00369 Carburetor adjustment CAUTION:@ Be sure to have a Yamaha dealer make this adjustment. Make sure that the air filter case is installed dur- ing running to prevent engine damage. @ Under some operating conditions the carburetor setting may have to be changed due to air temperature changes, elevation changes, use of alcohol oxygenated fuels, etc., and should be set by a Yamaha dealer. CAUTION:@ The drive chain gears and V-belt clutch should be adjusted when operating over a high altitude of 900 m (3,000 ft). Consult a Yamaha dealer. @ Pilot screw adjustment Turn the pilot screw in or out to adjust low speed tuning. CD-02E Standard pilot screw position: 2 turns out from the seated position. Pilot screw 1Mixture Condition Turn in LeanWarm weather High altitude Turn out RichCold weather Low altitude U8FA11.book Page 7 Thursday, April 3, 2003 4:09 PM
8-8 Jet needle adjustment Adjust the jet needle by changing its clip position accord- ing to the setting chart which is available at a Yamaha dealer. CD-03E 1. Remove the top cover of the carburetor and jet nee- dle. 2. Change the clip to the proper position. Make sure that the plastic washer is in place below the clip. WARNING@ Make sure that the throttle outer cable is firmly seated in the holder and the throttle operates smoothly after assembling the carburetor. @ 3. Assemble by reversing the removal steps. Main jet replacement Replace the main jet according to the setting chart which is available at a Yamaha dealer. WARNING@ Never remove the drain plug or the float chamber while the engine is hot. Fuel will flow out from the float chamber which could ignite and cause injury. Place a rag under the carburetor before removing the drain plug or float chamber to catch any spilled fuel. Handle fuel with care: it is HIGHLY FLAMMABLE. @ Standard jet needle clip 1 position: 3rd groove from upper end Clip position Mixture Condition 2 Upper end LeanWarm weather High altitude 3 Lower end RichCold weather Low altitude U8FA11.book Page 8 Thursday, April 3, 2003 4:09 PM