1986 Ski Doo Citation Service Manual

The 1986 Ski Doo Citation is a reliable snowmobile featuring a 340cc or 440cc rotary valve engine, slide rail suspension, and advanced cooling system for its time. This service manual covers comprehensive maintenance procedures, troubleshooting guides, technical specifications, and repair instructions for the 1986 model year. Below are key sections for safety precautions, technical specifications, maintenance schedules, engine service, chassis repair, electrical systems, and troubleshooting.

Technical Specifications

Key components: Rotary valve engine, Mikuni carburetor, CDI ignition, slide rail suspension, hydraulic disc brake.

Safety Precautions

Always follow safety procedures when servicing your Ski Doo Citation.

1. Disconnect spark plug wire before performing any engine work.
2. Use proper lifting equipment when raising snowmobile.
3. Work in well-ventilated area when handling fuel.
4. Wear safety glasses during maintenance procedures.

WARNING! Gasoline is highly flammable; no smoking or open flames during service. Engine components become extremely hot during operation.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

1. Pre-season: Check all systems, change oil, inspect track.
2. Every 500 miles: Clean carburetor, check spark plug, inspect drive belt.
3. Every 1000 miles: Replace spark plug, check suspension components.
4. Season end: Fuel stabilization, proper storage preparation.

CAUTION! Always use genuine Ski Doo parts for replacement to maintain performance and safety standards.

Engine Service

• Compression Test: Should read 120-150 PSI for healthy engine.
• Spark Plug: NGK BR9ES, gap 0.020 inches.
• Ignition Timing: 0.118 inches BTDC at 5000 RPM.
• Cylinder Head Torque: 18 ft-lbs in crisscross pattern.
• Rotary Valve: Clearance 0.004-0.006 inches.
• Crankcase Pressure Test: Should hold 7 PSI for 5 minutes.
• Cooling System: Check for leaks, proper coolant flow.

Fuel System

Mikuni carburetor maintenance and fuel delivery system.

Carburetor Settings: Main jet #210 (340cc), #240 (440cc); Pilot jet #40; Needle jet 6DH3-3; Air screw 1.5 turns out.

Fuel Pump: Check diaphragm for cracks, ensure proper pressure. Fuel Lines: Inspect for cracks, replace if hardened. Fuel Filter: Replace annually or every 1000 miles. Tank Vent: Ensure proper ventilation to prevent vapor lock.

Drive System

Drive clutch, driven clutch, and track maintenance procedures.

1. Drive Clutch: Inspect weights and bushings for wear.
2. Driven Clutch: Check spring tension and helix angles.
3. Drive Belt: Deflection should be 1-1.5 inches under 10 lbs pressure.
4. Chain Case: Oil level at filler plug, use 75W-90 gear oil.
5. Track Tension: 1 inch sag between slides when lifted.

Tip: Always align clutches properly to prevent premature belt wear.

Electrical System

CDI ignition, lighting, and starting system maintenance.

1. CDI Unit: Test resistance values per specification chart.
2. Stator: Output should be 200V AC at 5000 RPM.
3. Voltage Regulator: Maintains 13.5-14.5V DC.
4. Headlight: 45/40W halogen, check alignment.
5. Taillight/Brake Light: 5/21W bulb, inspect socket.
6. Key Switch: Test continuity in ON/RUN positions.
7. Kill Switch: Must ground ignition when activated.

WARNING! Disconnect battery before electrical work to prevent shorts.

Suspension & Steering

Slide rail suspension maintenance and steering system service.

Brake System

Hydraulic disc brake maintenance and bleeding procedures.

Brake Fluid: DOT 4, check reservoir level. Brake Pads: Replace if worn below 1mm. Caliper: Check for piston retraction. Brake Lever: Free play should be 1/8 inch. System Bleeding: Use proper sequence to remove air.

Troubleshooting

Reset: None required for mechanical systems.

Service: Contact authorized Ski Doo dealer for complex repairs.