1999 ARCTIC CAT SNOWMOBILE Repair Service WORK Shop MANU

FOREWORD This Arctic Cat Service Manual Volume I contains service and maintenance information for the Model Year 2000 Arctic Cat Snowmobiles. The complete two-volume set is designed to aid service personnel in service-oriented applications. This volume is divided into sections. The sections cover specific snowmobile components or systems and, in addition to the standard service procedures, includes assembling, disassembling, and inspecting instructions. When using this manual as a guide, the technician should use discretion as to how much disassembly is needed to correct any given condition. The service technician should become familiar with the operation and construction of the components or systems by carefully studying the complete two-volume set. This will assist the service technician in becoming more aware of and efficient with servicing procedures. Such efficiency not only helps build consumer confidence but also saves time and labor. All Arctic Cat publications and snowmobile decals display the words Warning, Caution, and Note to emphasize important information. The symbol ! WARNING identifies personal safety-related information. Be sure to follow the directive because it deals with the possibility of severe personal injury or even death. The symbol ! CAUTION identifies unsafe practices which may result in snowmobile-related damage. Follow the directive because it deals with the possibility of damaging part or parts of the snowmobile. The symbol NOTE: identifies supplementary information worthy of particular attention. At the time of publication, all information, photographs, and illustrations were technically correct. Some photographs and illustrations used in this volume are used for clarity purposes only and are not designed to depict actual conditions. Because Arctic Cat Inc. constantly refines and improves its products, no retroactive obligation is incurred. All materials and specifications are subject to change without notice. Keep this manual accessible in the shop area for reference. Product Service and Warranty Department Arctic Cat Inc. © 1999 Arctic Cat Inc. September 1999 ®™ Trademarks of Arctic Cat Inc., Thief River Falls, MN

TABLE OF CONTENTS Section 1. General Information (Vol. I) 2. Engine (Vol. I) 3. Engine-Related Items (Vol. I) 4. Fuel Systems (Vol. I) 5. Engine Electrical Systems (Vol. I) 6. Chassis Electrical Systems (Vol. II) 7. Steering and Body (Vol. II) 8. Drive Train System and Brake Systems (Vol. II) 9. Track/Rear Suspension (Vol. II)

SECTION 1 — GENERAL INFORMATION TABLE OF CONTENTS Snowmobile Identification ............ 1-2 Recommended Gasoline and Oil ........ 1-2 Break-In Procedure ............... 1-3 Genuine Parts ................. 1-3 High Altitude Operation ............. 1-3 Preparation For Storage ............ 1-3 Preparation After Storage ............ 1-5 After Break-In Checkup (100 Miles) ...... 1-5 After Break-In Checkup Checklist ........ 1-6 Torque Conversions ............... 1-7 Fraction/Decimal Conversion Chart ....... 1-8 Drill Bit Sizes (Number) Chart ......... 1-8 MM/In. Conversion Chart ............ 1-9 Servicing Symbols ............... 1-10 1 1-1

Snowmobile Identification The Arctic Cat Snowmobile has several identification numbers. The Vehicle Identification Number (VIN) is stamped into the tunnel near the right-side footrest (Fig. 1). The Engine Serial Number (ESN) is stamped into the crankcase of the engine. The Engine Model Number is located on the engine magneto housing. Fig. 1-1 0726-383 These numbers are required to complete warranty claims properly. No warranty will be allowed by Arctic Cat Inc. if the engine serial number or VIN is removed or mutilated in any way. Recommended Gasoline and Oil Recommended Gasoline (Carbureted Models) The recommended gasoline to use in these snowmobiles is 87 minimum octane regular unleaded. In many areas, oxygenates (either ethanol or MTBE) are added to the gasoline. Oxygenated gasolines containing up to 10% ethanol or up to 15% MTBE are acceptable gasolines; however, whenever using oxygenated gasolines, the carburetor main jet must be one size larger than the main jet required for regular unleaded gasoline. For example, if a 400 main jet is recommended for regular unleaded gasoline, a 410 main jet must be installed if using an oxygenated gasoline. When using ethanol blended gasoline, it is not necessary to add a gasoline antifreeze since ethanol will prevent the accumulation of moisture in the fuel system. Do not use white gas or gasolines containing methanol. Only Arctic Cat approved gasoline additives should be used. Recommended Gasoline (EFI Models) The recommended gasoline to use in these snowmobiles is 87 minimum octane regular unleaded, and the Fuel Designation Connector at the ECU must be connected. In many areas, oxygenates (either ethanol or MTBE) are added to the gasoline. Oxygenated gasolines containing up to 10% ethanol or up to 15% MTBE are acceptable gasolines; however, if oxygenated gasoline is used, the Fuel Designation Connector at the ECU must be disconnected. Do not use gasolines containing methanol. Fig. 1-2 734-482A Do not use white gas or gasoline containing methanol. Only Arctic Cat approved gasoline additives should be used. If oxygenated gasoline is to be used, it is extremely important that the Fuel Designation Connector at the ECU is disconnected. If the connector is not disconnected when using oxygenated gasoline, severe engine damage may occur. NOTE: In order for the ECU to change modes, the engine must be OFF when connecting or disconnecting the Fuel Designation Connector. Recommended Oil The recommended oil to use in the oil-injection system is Arctic Cat 50:1 Injection Oil. This oil is specially formulated to be used either as an injection oil or as a pre-mix oil (for carbureted model break-in) and meets all of the lubrication requirements of the Arctic Cat snowmobile engine. ! CAUTION ! CAUTION ! CAUTION 1-2

Any oil used in place of the recommended oil could cause serious engine damage. Break-In Procedure The Arctic Cat engine (when new or rebuilt) requires a short break-in period before the engine is subjected to heavy load conditions. Arctic Cat requires that the first tankful of fuel be premixed at a 100:1 ratio in all carbureted oil-injection models; however, Arctic Cat does not recommend any premixed fuel be used during break-in period for EFI models. On EFI models, DO NOT use premixed fuel in the snowmobile gas tank. Engine damage will occur. During the break-in period, a maximum of 1/2 throttle is recommended; however, brief full-throttle accelerations and variations in driving speeds contribute to good engine break-in. On carbureted models, DO NOT exceed the one (1) tankful limitation of a 100:1 gas/oil break-in mixture. Continuous use of a gas/oil mixture, unless consistently operating in extremely cold conditions (-26°C/-15°F or colder), could cause spark plug fouling and excessive carbon buildup. A 100:1 gas/oil mixture must be used in conjunction with the oil-injection system to ensure adequate engine lubrication in extremely cold conditions. Genuine Parts When replacement of parts is necessary, use only genuine Arctic Cat parts. They are precision-made to ensure high quality and correct fit. High Altitude Operation Operating a snowmobile at varying altitudes requires changes in performance components. These changes affect drive train components (on all models) and carburetion components (on carbureted models). A high altitude information decal is located beneath the hood of the snowmobile. On carbureted models, the information is incorporated into the Main Jet Chart decal. On carbureted models, carefully follow the Main Jet Chart recommendations for proper main jet selection for altitude, temperature, and gasoline being used. A number of Arctic Cat snowmobiles are initially set up at the factory for operation between 5000-9000 feet. Consult the appropriate specifications for this information. Preparation For Storage Prior to storing the snowmobile, it must be properly serviced to prevent corrosion and component deterioration. An authorized Arctic Cat Snowmobile dealer should perform this service; however, the owner/operator can perform this service if desired. To prepare the snowmobile for storage, Arctic Cat recommends the following procedure: 1. Clean the seat cushion with a damp cloth and Arctic Cat Vinyl Protectant (p/n 0638-313). 2. Clean the snowmobile thoroughly by hosing dirt, oil, grass, and other foreign matter from the skid frame, tunnel, hood, and belly pan. Allow the snowmobile to dry thoroughly. DO NOT get water into any part of the engine. 3. Place the rear of the snowmobile up on a shielded safety stand. NOTE: On some models, the air-intake silencer is a one-piece unit, and the silencer boot(s) can be removed to access the intake bore(s). Remove the boots; then proceed to step 7. ! CAUTION ! CAUTION ! CAUTION ! CAUTION 1 1-3

NOTE: On some models, the air-intake silencer includes a cover/tool tray assembly and a baffle/resonator, and the silencer boot cannot be removed to access the intake bores. Proceed to step 4. 4. Open the air-intake silencer cover; then remove the 3 Phillips-head screws securing the cover/tool tray assembly to the silencer. 5. Close the cover; then tip the cover/tool tray assembly forward and out of its slots and remove the assembly. 6. Using a large flat-blade screwdriver, remove the baffle/resonator tabs from the air-intake silencer slots and remove the baffle/resonator to access the intake bores. NOTE: The baffle/resonator can be removed more easily by removing the back tabs first. 7. Start the engine and allow to idle. With the engine idling, spray Arctic Cat Engine Storage Preserver (p/n 0636-177) into the intake(s) until the engine exhaust starts to smoke heavily or until the engine starts to drop in RPM. Turn engine off. NOTE: On some models, install the air-intake silencer boot(s); on some models, install the baffle/resonator and the cover/tool tray assembly. 8. Plug the exhaust system outlet with a clean cloth. 9. With the ignition switch in the OFF position: A. Disconnect the high tension leads from the spark plugs; then remove the plugs, connect them to the leads, and ground them on the cylinder heads. Never crank the engine over without grounding the spark plugs. Damage to coils and/or CDI unit may result. B. Pour 29.5 ml (1 fl oz) of SAE #30 petroleum-based oil into each spark plug hole and pull the recoil starter handle slowly about 10 times. C. Install the spark plugs and connect the high tension leads. 10. On carbureted models, drain the gas from each carburetor float chamber. 11. Fill the gas tank to its rated capacity; then add Arctic Cat Fuel Stabilizer (p/n 0638-165) to the gas tank following directions on the container for the stabilizer/gasoline ratio. Tighten the gas tank cap securely. 12. Drain the chain-case lubricant by removing the chain-case drain plug located on the backside of the chain-case assembly. Remove the chain-case cover and inspect chain, sprockets, chain tensioner, and rollers for wear and the chain for proper tension. Install the drain plug, chain-case cover, and seal; then pour Arctic Cat Transmission Lube (p/n 0636-817) into the filler hole according to appropriate specifications. 13. Remove the drive belt from the drive clutch/driven pulley. Lay the belt on a flat surface or slide it into a cardboard sleeve to prevent warping or distortion during storage. 14. Clean and inspect the drive clutch and driven pulley. 15. Apply light oil to the upper steering post bushing, ski spindles and bolts, front and rear pivot bushings of the skid frame, and plungers of the shock absorbers. 16. Lubricate the front and rear suspension, spindles, and speedometer drive adapter with a low-temperature grease. 17. Tighten all nuts, bolts, and cap screws making sure all calibrated nuts, bolts, and cap screws are tightened to specifications. Make sure all rivets holding the components together are tight. Replace all loose rivets. 18. Clean and polish the hood, console, and chassis with Arctic Cat Hood and Windshield Cleaner/ Polish (p/n 0636-174). DO NOT USE SOLVENTS OR SPRAY CLEANERS. THE PROPELLANT WILL DAMAGE THE FINISH. 19. On electric start models, disconnect the battery cables making sure to disconnect the negative cable first; then clean the battery posts and cables. 20. If possible, store the snowmobile indoors. Raise the track off the floor by blocking up the back end making sure the snowmobile is secure. Loosen the track adjusting bolts to reduce track tension. Cover the snowmobile with a machine cover or a heavy tarpaulin to protect it from dirt and dust. 21. If the snowmobile must be stored outdoors, position the snowmobile out of direct sunlight; then block the entire snowmobile off the ground making sure the snowmobile is secure. Loosen the track adjusting bolts to reduce track tension. Cover with a machine cover or a heavy tarpaulin to protect it from dirt, dust, and rain. Avoid storing in direct sunlight and using a plastic cover as moisture may collect on the snowmobile causing corrosion. ! CAUTION ! CAUTION 1-4

Preparation After Storage Taking the snowmobile out of storage and correctly preparing it for another season will assure many miles and hours of trouble-free snowmobiling. Arctic Cat recommends the following procedure: On carbureted models if the gas in each carburetor float chamber was not drained prior to storage, the carburetor(s) must be cleaned before starting the engine. 1. Clean the snowmobile thoroughly. Polish the exterior of the snowmobile. 2. Clean the engine. Remove the cloth from the exhaust system. Check exhaust system and air-intake silencer for obstructions. 3. Inspect all control wires and cables for signs of wear or fraying. Replace if necessary. Use cable ties or tape to route wires and cables away from hot or rotating parts. 4. Inspect the drive belt for cracks and tears. Check belt specifications. Replace if damaged or worn. Install the drive belt. NOTE: If the old belt is worn but in reasonable condition, retain it with the snowmobile as a spare in case of emergency. 5. On carbureted models, inspect the in-line fuel filter and replace if necessary. 6. Inspect all fuel hoses and oil hoses for deterioration or cracks; replace if necessary. Make sure all connections are tight; then fill the oil-injection reservoir with 50:1 injection oil. NOTE: On carbureted models after prolonged storage, Arctic Cat recommends one tankful of 100:1 gas/oil mixture be used in conjunction with the oil-injection system to ensure proper lubrication. 7. Inspect the entire brake system, all controls, headlight, taillight, brakelight, ski wear bars, and headlight aim; adjust or replace as necessary. 8. Inspect the spark plugs. Replace, gap, or clean as necessary. 9. Adjust the track to the proper tension and alignment. Lock the jam nuts. 10. Adjust the carburetor(s) and choke cable on carbureted models and throttle cable on all models. On VM-style carburetors, be sure to tighten the swivel adapter jam nuts securely. If a jam nut isn’t tightened, the adjuster can rotate out of the carburetor cap causing the piston valve not to return to the full-closed position. 11. Tighten all nuts, bolts, and cap screws making sure all calibrated nuts, bolts, and cap screws are tightened to specifications. 12. Lubricate the rear suspension, spindles, and speedometer drive adapter with a low-temperature grease. 13. On liquid cooled models, check the coolant level and all coolant hoses and connections for deterioration or cracks. Add properly mixed coolant as necessary. 14. On fan cooled models, clean the engine cooling fins and vents. 15. On EFI models, place the rear of the snowmobile on a shielded safety stand; then start the engine. Allow the engine to idle; then using a long stiff wire with a hooked end, raise the oil-injection pump control arm to the wide-open position until the engine starts to smoke heavily. Release the control arm and turn off the engine. 16. On electric start models, charge the battery; then connect the battery cables making sure to connect the positive cable first. Test the electric start system. After Break-In Checkup (100 Miles) The 100 mile checkup offered by some dealerships reduces problems and warranty costs. A program of this kind should be offered by all dealerships. Many dealerships have added the price of the checkup into the selling price of the snowmobile, and others offer it as a bonus to the customers who purchase snowmobiles from their dealership. There are three areas that require adjustment after the break-in period in order to obtain peak performance. These areas are the following. A. Carburetor jetting B. Drive belt deflection C. Track tension and alignment ! CAUTION ! CAUTION 1 1-5

Carburetor Jetting - Altitude, temperature, and the use of oxygenated gasoline affect the carburetion needed for optimum engine performance. The carburetor main jets must be changed in conjunction with changes in operating altitude, oxygenated gasoline usage, and temperature. Drive Belt Deflection - Drive belt deflection is very important to the snowmobile. Even if it is checked and is correct when the snowmobile is set up, it does change (more so during the break-in period). This is because the rubber engine mounts and the rubber snubber on the torque link will all take a “set” during the first 100 miles, which allows the distance between the drive clutch and driven pulley to shorten. When this happens, the snowmobile will appear to have a too long drive belt. To add to this, the drive belt itself wears and stretches somewhat. This all leads to a low-end performance problem and, if not corrected, causes premature drive belt wear. After the break-in period, drive belt deflection should be checked according to the instructions given in this manual. To correct for too much deflection, washer(s) from between the driven pulley sheaves can be removed to “tighten the drive belt” and allow the belt to return to the proper ratio for drive clutch engagement. Drive Belt Break-In - It is critical for maximum drive belt life to allow the belt to break in before subjecting it to hard use such as wide-open-throttle operation or hill climbing. The first 20 miles on the drive belt should be at 1/2 throttle or lower. This will allow the belt to cure totally before it is subjected to hard use. If this procedure isn’t followed, it is possible to destroy a new drive belt in less than 50 miles. This should be explained to customers at the time of drive belt sales. To increase the life of a drive belt, it is very important that the belt be warmed up before subjecting it to any type of use. In cold temperature (0° or below), the engine should be allowed to idle for a period of 8 to 10 minutes. This will allow heat from the engine compartment to soften the drive belt. Not only will this procedure increase belt life but will also help prevent engine damage from cold seizure. ! WARNING When following the above procedure, the operator must not leave the snowmobile unattended during the warm-up period. Each operator should be instructed to drive the snowmobile for several minutes at a low throttle setting to warm the belt up before using wide-open-throttle. This practice should be followed on all models for maximum belt life. Track Tension and Alignment - There is a certain amount of stretch on all tracks during the first 500 miles. The track must be adjusted after the first 50 to 100 miles to the specifications given in the Setup and Predelivery Manual and periodically thereafter. If these adjustments aren’t performed, the track may “derail” which leads to track and slide rail damage. Along with these three major areas, there are also other areas that should be checked and adjusted during the “After Break-In Checkup.” A checklist to assist you with this service follows. Not only will the customer be happier, but it also gets the customer back into your dealership, which in many cases will mean additional sales in accessories, belts, oil, etc. After Break-In Checkup Checklist Below is a recommended list of items to check after the break-in period. By performing this inspection, warranty cost can be reduced and customer satisfaction can be increased. The recommended mileage for this inspection is between 100 and 300 miles. Please encourage the customers to have this important checkup done. ❏ Jet carburetor(s) according to average temperature, type of gasoline being used, and altitude ❏ Adjust drive belt deflection ❏ Adjust track tension and alignment ❏ Adjust throttle cable tension ❏ Check oil-injection pump adjustment ❏ Check engine idle ❏ Check coolant level ❏ Check chain case lubricant level ❏ Check lights (high-low beam, brakelight) ❏ Check safety switch operation ❏ Check driveshaft area for any rubbing components ❏ Check steering hardware for tightness ❏ Check skid frame and A-arm mounting hardware for tightness ❏ Check brake lever travel and adjustment ❏ Grease all lubrication points 1-6

1999 ARCTIC CAT SNOWMOBILE Repair Service WORK Shop MANU

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