Target User:
DIY mechanics, snowmobile enthusiasts, and professional repair shops.
Value Proposition:
Provides comprehensive technical data essential for maintaining and repairing Yamaha Mountain Max snowmobiles, offering significant cost savings over dealership service.
Essential Resource:
Indispensable for owners seeking to perform their own maintenance, diagnostics, and repairs, ensuring longevity and optimal performance of the snowmobile.
Engine:
Detailed coverage including disassembly, inspection, assembly, tuning, and troubleshooting for both 600cc and 700cc engine variants.
Fuel System:
Carburetor service and tuning, fuel pump operation, fuel lines, and fuel tank maintenance.
Ignition System:
CDI unit, spark plugs, stator, and troubleshooting electrical ignition faults.
Cooling System:
Operation of liquid cooling systems, radiator, water pump, thermostat, and coolant specifications.
Drive System:
Clutch (primary and secondary) inspection, adjustment, and replacement; drive belt service; chain case lubrication and inspection.
Suspension Front:
Front suspension geometry, shock absorber service, ski and spindle maintenance, and alignment specifications.
Suspension Rear:
Rear suspension (ProAction R or similar) component inspection, shock absorber service, track tension adjustment, and lubrication points.
Brakes:
Hydraulic brake system service, caliper maintenance, brake fluid specifications, and rotor inspection.
Electrical System:
Wiring diagrams, lighting system service, starter motor and battery maintenance, and component testing.
Bodywork Chassis:
Body panel removal and installation, chassis inspection, and seat maintenance.
Routine Maintenance:
Scheduled maintenance tasks, lubrication points, and regular checks.
Engine Rebuild:
Comprehensive step-by-step instructions for complete engine disassembly, rebuild, and reassembly.
Carburetor Tuning:
Detailed procedures for adjusting fuel-air mixture, idle speed, and jetting for optimal performance in various conditions.
Clutch Service:
Belt replacement, clutch alignment, spring and weight adjustments for clutch performance.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting for common issues.
Electrical Diagnostics:
Testing of electrical components, including stator output, CDI function, and lighting circuits.
Suspension Adjustment:
Instructions for adjusting suspension settings for different riding styles and terrain.
Brake Bleeding:
Correct procedure for flushing and bleeding the hydraulic brake system.
Diagnostic Capability:
Advanced diagnostics for engine, electrical, and mechanical systems.
Repair Scope:
Full scope of repairs, from minor adjustments to major component overhauls and replacements.
Component Rebuilds:
Detailed procedures for rebuilding key components like engines, transmissions (if applicable), pumps, and carburetors.
Specifications And Tolerances:
Precise measurements, torque values, clearances, and tolerances for all mechanical parts.
Engine Type 600:
Liquid-cooled, 2-stroke, reed valve, Parallel Twin
Displacement 600:
Approx. 597cc (specific bore/stroke dependent on exact variant)
Engine Type 700:
Liquid-cooled, 2-stroke, reed valve, Parallel Twin
Displacement 700:
Approx. 698cc (specific bore/stroke dependent on exact variant)
Horsepower Range 600:
Typically in the 90-100 HP range for this era and displacement.
Horsepower Range 700:
Typically in the 110-120 HP range for this era and displacement.
Carburetor Type:
Dual Mikuni carburetors (e.g., VM34 or similar) are common.
Fuel Type:
Unleaded gasoline (87 octane or higher recommended, consult manual for specific requirements)
Oil Injection:
Yamaha's Autolube system (separate oil injection tank).
Oil Change Engine:
Regular checks of oil injection system, top-end inspections recommended based on usage.
Clutch Inspection:
Clutch belt inspection and alignment checks every 500-1000 miles or annually.
Track Tension:
Track tension adjustment as needed, typically checked before each season.
Spark Plugs:
Replacement based on wear and condition, typically every 1000-1500 miles or as per manual recommendation.
Engine Oil:
Yamaha-specific 2-stroke synthetic oil for Autolube system. Refer to manual for exact part numbers (e.g., Yamalube 2S).
Coolant:
Ethylene glycol-based antifreeze (50/50 mix with distilled water recommended). Consult manual for specific type and capacity.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid. Always use fresh fluid.
Clutch Wear:
Sheave wear on clutches, clutch weight issues affecting performance.
Carburetor Icing:
Prone to icing in very cold or humid conditions, requiring carburetor pre-heaters or specific jetting.
Exhaust Leaks:
Exhaust manifold gaskets or pipe integrity can be a common issue, leading to power loss.
Suspension Bushings:
Wear in suspension pivot points and bushings can lead to handling issues.
Yamaha Motorsports:
Yamaha has a long-standing reputation in motorsports, including snowmobiles, motorcycles, and marine products, known for engineering and reliability.
Mountain Max Lineage:
The Mountain Max was Yamaha's flagship model for deep snow and mountain riding during this period, evolving from earlier Phazer and Exciter models. It focused on a lightweight chassis and powerful, reliable engines.
Manufacturing Location:
Likely manufactured by Yamaha Motor Corporation, potentially in Japan or North America.