Description
This Clymer Ski-Doo Snowmobile 1985-1989 Shop Manual provides detailed service information, step-by-step repair instruction and maintenance specifications for 1985-1989 Ski-Doo Formula MX, 1986 Ski-Doo Formula MX HA (High/Altitude), 1985-1989 Ski-Doo Formula Plus, 1987-1989 Ski-Doo Formula MX LT, 1989 Ski-Doo Formula Plus LT, and 1989 Ski-Doo Formula Mach I snowmobiles.
1985 1986 1987 1988 1989
Table of Contents
QUICK REFERENCE DATA
CHAPTER ONE, GENERAL INFORMATION
Manual organization, Notes, cautions and warnings, Safety first, Service hints, Engine and chassis serial numbers, Engine operation, Torque specifications, Fasteners, Lubricants, RTV gasket sealant, Threadlock, Gasket remover, Basic hand tools, Precision measuring tools, Special tools, Mechanic’s tips, Ball bearing replacement, Oil seals, Snowmobile operation, Snowmobile safety, Snowmobile code of ethics
CHAPTER TWO, TROUBLESHOOTING
Operating requirements, Troubleshooting instruments, Testing electrical components, Engine electrical system troubleshooting, Voltage regulator, Fuel system, Engine, Two-stroke pressure testing, Power train, Skis and steering, Track assembly
CHAPTER THREE, LUBRICATION, MAINTENANCE AND TUNE-UP
Pre-ride checks, Fluid checks, Break-in procedure, 10-hour inspection, Lubrication, Weekly or every 150 miles (240 km) maintenance, Monthly or every 500 miles (800 km), Once a year or every 2,000 miles (3,200 km), General inspection and maintenance, Engine tune-up
CHAPTER FOUR, HIGH-ALTITUDE AND REAR SUSPENSION ADJUSTMENT
High-altitude carburetor tuning, High-altitude clutch tuning, Gearing, Suspension adjustment
CHAPTER FIVE, ENGINE
Engine number identification, Engine lubrication, Service precautions, Servicing engine in frame, Engine removal, Engine mounts, Engine installation, Engine top end, Cylinder, Rotax Automatic Variable Exhaust (RAVE) (583 engines), Piston, wrist pin and piston rings, Crankcase, crankshaft and rotary valve, Rotary valve and shaft
CHAPTER SIX, FUEL AND EXHAUST SYSTEMS
Air silencer, Carburetor, Carburetor operation, Fuel pump, Fuel tank, Fuel valve (if so equipped), Throttle cable replacement, Exhaust system, Exhaust system repair
CHAPTER SEVEN, ELECTRICAL SYSTEM
Capacitor discharge ignition (CDI), Ignition coil, CDI box, Voltage regulator, Lighting system, Meter assembly, Pilot lamps, Switches, Fuel level sensor, Oil level gauge, Wiring diagrams
CHAPTER EIGHT, OIL INJECTION SYSTEM
System components, Oil pump service, Component replacement, Oil pump
CHAPTER NINE, LIQUID COOLING SYSTEM
Thermostat, Water pump, Heat exchanger, Hoses
CHAPTER TEN, RECOIL STARTER
CHAPTER ELEVEN, DRIVE SYSTEM
Drive unit, Primary sheave assembly, Secondary sheave, Drive belt, Primary sheave service (1985 and 1986 MX), Primary sheave service (1986 Plus and all 1987 and later models), Secondary sheave service
CHAPTER TWELVE, BRAKE, CHAINCASE AND DRIVE AXLE
Drive chain and sprockets, Chaincase, brake caliper and jackshaft, Drive axle, Drive axle axial play
CHAPTER THIRTEEN, FRONT SUSPENSION AND STEERING
Skis, Front suspension, Shock absorber, Steering assembly, Steering adjustment
CHAPTER FOURTEEN, TRACK AND GEAR SUSPENSION
Rear suspension, Slide shoes, Runner protector, Rear shock absorbers, Front shackle, front swing arm and front arm, Rear shackle and rear arm, Rear axle, Suspension and guide wheels, Track
CHAPTER FIFTEEN, OFF-SEASON STORAGE
INDEX
WIRING DIAGRAMS
