1987 Yamaha Exciter 570 Manual

The 1987 Yamaha Exciter 570 is a high-performance snowmobile featuring a 570cc two-stroke engine, slide rail suspension, and advanced features for its time. This manual covers safety precautions, technical specifications, maintenance procedures, operation guidelines, and troubleshooting for optimal performance and longevity of your snowmobile.

1. Features at a Glance 2. Installation & Assembly 3. First-Time Operation 4. Specifications 5. Controls and Settings 6. Maintenance Procedures 7. Engine Operation 8. Safety Features 9. Care & Storage 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 570cc two-stroke engine, slide rail suspension system, mechanical reverse, electric start, and advanced carburetion system.

Feature	Description
Engine	570cc two-stroke air-cooled engine
Suspension	Slide rail rear suspension with front struts
Transmission	CVT automatic with mechanical reverse
Starting System	Electric start with backup recoil
Brakes	Hydraulic disc brake system
Track	15-inch wide rubber track
Fuel System	Dual VM34 carburetors
Ignition	CDI electronic ignition
Weight	Approximately 450 lbs
Seating	Bench-style seat for one rider

Installation & Assembly

Unpack and inspect all components. Assemble on level ground with proper tools.

Install handlebars: Align with mounting bracket and secure with provided bolts.
Attach windshield: Position carefully and secure with mounting hardware.
Install skis: Attach to spindle assemblies and check alignment.
Connect battery: Ensure proper polarity when connecting cables.
Add fluids: Fill with recommended oil and fuel mixture.

WARNING! Snowmobile is heavy; use proper lifting techniques. Ensure all fasteners are properly torqued.

First-Time Operation

Perform pre-ride inspection before initial operation.

Check fuel mixture: Ensure proper oil-to-gas ratio (40:1 recommended).
Inspect track: Verify proper tension and alignment.
Test controls: Check throttle, brake, and steering operation.
Warm up engine: Allow engine to reach operating temperature before riding.
Test drive: Begin with slow speeds in open area to familiarize with controls.

CAUTION! Always wear proper safety gear including helmet and protective clothing.

Specifications

Engine Type: 570cc two-stroke, air-cooled
Bore x Stroke: 72mm x 70mm
Compression Ratio: 7.2:1
Fuel Capacity: 11.5 gallons
Oil Capacity: 3.2 quarts
Track Dimensions: 15" x 121"
Suspension Travel: Front 6.5", Rear 4.5"
Dry Weight: 450 lbs
Maximum Speed: Approximately 85 mph
Fuel Consumption: 12-15 mpg under normal conditions

Controls and Settings

Main controls located on handlebars and dashboard. Throttle: Right-hand lever. Brake: Left-hand lever. Reverse: Lever near left grip.

Dashboard: Speedometer, tachometer, fuel gauge, temperature warning light, oil warning light.

Engine Settings: Carburetor mixture screws, idle speed adjustment, choke control. Suspension: Front spring preload adjustment, rear torsion spring adjustment. Maintenance: Oil pump adjustment, drive belt tension, track tension adjustment.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Daily: Check fuel level, oil level, track condition, ski alignment.
Weekly: Inspect spark plugs, clean air filter, check drive belt.
Monthly: Change oil, grease fittings, inspect suspension components.
Seasonal: Drain fuel system, fog engine, store properly.

Tip: Keep maintenance records for warranty and resale value.

Engine Operation

Proper engine operation procedures for maximum performance.

Starting: Turn key to ON, set choke, press starter button.
Warm-up: Allow 2-3 minutes at idle before riding.
Operation: Avoid prolonged idling, vary speeds during break-in period.
Shutdown: Allow engine to idle for 30 seconds before turning off.
Storage: Use fuel stabilizer and fogging oil for seasonal storage.

WARNING! Never operate in enclosed spaces due to carbon monoxide risk.

Safety Features

Emergency kill switch: Red button on handlebars stops engine immediately. Brake safety switch: Prevents engine starting when brake is not applied. Throttle safety switch: Returns throttle to idle if released suddenly.

Care & Storage

Clean after each use with mild soap and water. Dry thoroughly to prevent rust. Store in dry, covered area with fuel stabilizer added.

CAUTION! Do not use high-pressure spray near bearings or electrical components.

Regulatory Information

Complies with SAE J2562 snowmobile safety standards. EPA certified for emissions compliance. Copyright © 1987 Yamaha Motor Corporation; all rights reserved. For technical support, contact Yamaha Customer Service at 1-800-962-7926 or visit www.yamaha-motor.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, or compression issue	Check fuel level, spark plug, compression test.
Poor performance	Clogged carburetor or worn belt	Clean carburetors, inspect drive belt.
Overheating	Cooling system blockage	Clean cooling fins, check water pump.
Electrical issues	Battery or wiring problems	Test battery voltage, inspect wiring harness.
Track slippage	Loose track or worn drivers	Adjust track tension, inspect drive sprockets.

Reset: Disconnect battery for 30 seconds to reset electrical system.

Service: 1-800-962-7926; www.yamaha-motor.com