1986-1990 Yamaha Enticer ET340 ET400 Snowmobile Repair Manual

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Taper: Snowmobile

Distributeur:

UGS: 156116

Mots clés: 1986 1987 1988 1989 1990 Enticer Enticer Models ET340 ET400 Powersports Snowmobile Snowmobiles Yamaha

Variantes de produits

Description

The Yamaha Enticer ET340 and ET400 snowmobiles, produced between 1986 and 1990, represent reliable and user-friendly machines popular for trail riding and recreational use. These models, known for their robust engineering and ease of operation, were designed to offer dependable performance in various snow conditions. As part of Yamaha's well-regarded Enticer line, these snowmobiles offered a balance of capability and accessibility, making them a solid choice for riders seeking enjoyable winter excursions. Their design prioritized durability and straightforward functionality, contributing to their lasting appeal among enthusiasts. This service and repair manual provides comprehensive guidance for maintaining and troubleshooting the Yamaha Enticer ET340 and ET400 models from the 1986-1990 production years. It covers essential maintenance procedures, detailed repair and rebuild instructions for critical systems including the engine, transmission, electrical, steering, suspension, and bodywork. Furthermore, the manual includes diagnostic procedures for common issues, technical specifications, and safety guidelines. Its purpose is to empower owners, technicians, and mechanics with the knowledge necessary to ensure optimal performance, longevity, and safe operation of their Enticer snowmobiles.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

Enticer ET400

Model Year Range:

1986-1990

Codes

Chassis Code Et340:

ET340 Series

Chassis Code Et400:

ET400 Series

👋 Introduction

Market Position

Segment:

Entry-level to Mid-range Trail Snowmobile

Competitive Analysis

Competitors:

Arctic Cat El Tigre, Ski-Doo Safari, Polaris Indy

Key Features

Vehicle Focus:

Reliable, user-friendly snowmobiles popular for trail riding and general recreational use.

Manual Benefit:

Empowers owners to perform maintenance, diagnostics, and repairs, reducing reliance on dealer service and extending vehicle lifespan.

📋 Manual Details

Coverage Areas

Covered Models:

1986 Yamaha Enticer ET340, 1987 Yamaha Enticer ET340, 1988 Yamaha Enticer ET340, 1989 Yamaha Enticer ET340, 1989 Yamaha Enticer ET400, 1990 Yamaha Enticer ET340, 1990 Yamaha Enticer ET400

Page Count

Estimated Page Count:

Varies (typically 300-600 pages for comprehensive service manuals)

Manual Type

Type:

Service/Repair Manual

Language

Language:

English

Format

Format:

Digital Download (PDF)

📖 Manual Coverage

Systems Covered

Engine:

Complete overhaul, top-end, bottom-end, cooling system, lubrication system, fuel system (carburetors, fuel pump), intake and exhaust systems, engine removal/installation.

Transmission Drive:

Drive clutch, driven clutch, chaincase, drive chain, sprockets, track system inspection and maintenance.

Electrical:

Ignition system, lighting, starter system, battery, wiring diagrams, troubleshooting electrical faults.

Steering Suspension:

Handlebar assembly, steering post, skis, ski spindles, steering linkages, shock absorbers (front and rear), suspension components.

Bodywork:

Body panels, seat, cowling, storage compartments, bumper systems, graphics.

Procedures Included

Maintenance:

Routine inspections, lubrication points, belt tension checks, spark plug replacement, air filter cleaning/replacement, track adjustment, coolant checks.

Repair Rebuild:

Engine component replacement (pistons, rings, crankshaft, seals), carburetor tuning and rebuilding, clutch service, bearing replacement, brake system adjustments.

Troubleshooting:

Diagnostic procedures for common performance issues, starting problems, electrical malfunctions, drive system noises.

Technical Depth

Depth:

Comprehensive; covers from basic maintenance and adjustments to detailed engine and clutch rebuilds, including electrical system diagnostics and component specifications.

📊 Manual Specifications

File Format

Format:

Print Quality

Quality:

High-resolution, suitable for printing individual pages or the entire manual.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Type Et340:

2-Stroke, Fan-Cooled, Reed Valve Induction

Displacement Et340:

337 cc

Bore Stroke Et340:

Approx. 68mm x 61mm (refer to manual for exact specifications)

Cylinders Et340:

Type Et400:

2-Stroke, Fan-Cooled, Reed Valve Induction

Displacement Et400:

398 cc

Bore Stroke Et400:

Approx. 73mm x 61mm (refer to manual for exact specifications)

Cylinders Et400:

Performance

Horsepower Et340:

Approx. 30-35 HP (refer to manual for exact dyno or rated HP)

Horsepower Et400:

Approx. 35-40 HP (refer to manual for exact dyno or rated HP)

Fuel System

Carburetion:

Mikuni VM Series Carburetors (dual carburetors common), specific models vary by year and engine.

Fuel Type:

Unleaded Gasoline (87-91 Octane recommended)

Oil Mixture:

Pre-mix or Auto-lube system (check manual for specific system and ratio/oil type)

🔧 Transmission

Standard

Type:

CVT (Continuously Variable Transmission) with Arctic Cat's APV (Auto-Paced Variable) or similar system.

Optional

Gears:

No manual gears; variable ratios via clutch system.

Features

Drive System:

Chain drive from driven clutch to track drive sprocket.

Clutch Service:

Details on drive clutch weights, springs, and driven clutch helix/spring for performance tuning and repair.

📐 Dimensions

Exterior

Length:

Approx. 100-105 inches (refer to manual for exact model year dimensions)

Width:

Approx. 37-40 inches (refer to manual for exact model year dimensions)

Weights

Dry Weight Et340:

Approx. 370-400 lbs (refer to manual for exact model year)

Dry Weight Et400:

Approx. 380-410 lbs (refer to manual for exact model year)

🛡️ Safety Features

Ratings

Design Standard:

Industry standards for recreational snowmobiles of the era. Manual will detail safety precautions.

Active Features

Braking System:

Hydraulic disc brake (typically rear track).

Passive Features

Kill Switch:

Handlebar-mounted engine shut-off switch with lanyard.

Lighting:

Headlight, taillight, brake light for visibility.

💡 Technology Features

Infotainment

Dashboard:

Basic instrumentation: Speedometer, tachometer, engine temperature/warning lights, fuel gauge (if equipped).

Driver Assistance

No electronic driver assistance features common in modern snowmobiles.

🔧 Maintenance

Service Intervals

Oil Change:

For auto-lube systems: Check oil level frequently. For pre-mix: Mix fuel/oil before each fill-up.

Spark Plugs:

Inspect and gap every 1,000 miles or annually; replace as needed.

Clutch Service:

Inspect clutches for wear and alignment every 1,000-2,000 miles. Belt inspection every 500 miles.

Fluid Specifications

Coolant:

Ethylene Glycol based antifreeze/coolant (50/50 mix with distilled water recommended). Refer to manual for specific type and capacity.

Chaincase Oil:

Yamaha-specific chaincase oil or equivalent API GL-4 gear oil (e.g., 75W-90 or 80W-90). Refer to manual for exact specification and capacity.

Known Issues

Carburetor Issues:

Clogged jets, vacuum leaks, improper float height leading to rich or lean conditions.

Clutch Wear:

Worn clutch buttons, damaged belts, worn spider or primary sheave. Clutch alignment issues.

Engine Seals:

Leaking crank seals can cause air leaks and rich running conditions.

Track Wear:

Wear on track lugs, ice damage, or track tension issues.

📚 Vehicle History

Brand Heritage

Manufacturer:

Yamaha Motor Company, a global leader in powersports.

Model Evolution

Enticer Line:

The Enticer line was Yamaha's popular series of entry-level to mid-range snowmobiles, known for reliability and ease of use.

Production

Manufacturing Era:

Popular models during the late 1980s and early 1990s.

🏆 Awards & Recognition

Recognitions

Reputation:

Generally regarded as reliable and good value for their time, with a strong following among enthusiasts who maintain them.