Manual Scope:
Comprehensive Service and Repair
Covered Systems:
General Information, Periodic Inspections and Tuning, Engine, Carburetion, Power Train, Chassis, Electrical, Specifications
Estimated Page Count:
Not specified, but generally comprehensive service manuals for this era are 300-600 pages.
Type:
Service Repair Manual
Engine Mechanical:
Complete engine overhaul, disassembly, assembly, cylinder head, piston, crankshaft, lubrication system, cooling system, internal component specifications.
Fuel System Carburetion:
Carburetor identification, disassembly, cleaning, adjustment, jetting, float bowl service, fuel pump operation, fuel line routing, fuel tank maintenance.
Powertrain Drivetrain:
Drive clutch (primary) inspection and service, driven clutch (secondary) inspection and service, drive belt inspection and replacement, chaincase inspection, lubrication, and repair, output shaft and bearing service.
Chassis Suspension Steering:
Front suspension geometry, shock absorber service, ski alignment, rear suspension system, shock absorber service, track alignment, steering system components, handlebar and steering post service, lubrication points.
Electrical Ignition:
Ignition system troubleshooting, CDI unit, ignition coil, spark plug specifications, stator and lighting coil testing, wiring diagrams, headlight, taillight, and instrument cluster service, battery maintenance.
Bodywork Plastics:
Body panel removal and installation, seat removal, windshield service, bumper and guard inspection and repair, decal placement.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks and replacement, lubrication, track tension adjustment, drive belt inspection.
Troubleshooting:
Diagnostic flowcharts, common problem identification, symptom-based troubleshooting for engine, electrical, and mechanical issues.
Engine Repair Rebuild:
Detailed steps for complete engine disassembly, component inspection, measurement, part replacement, and reassembly.
Transmission Clutch Service:
Drive and driven clutch overhaul, roller replacement, spring inspection, sheave cleaning, and balancing.
Suspension Steering Adjustment:
Caster, camber, and toe adjustments for front suspension; track alignment procedures.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and powertrain rebuilds.
Engine Type Mm600:
Liquid-cooled, 2-stroke, reed valve, parallel-twin cylinder
Engine Type Mm700:
Liquid-cooled, 2-stroke, reed valve, parallel-twin cylinder
Displacement Mm600:
593 cc (Cubic Centimeters)
Displacement Mm700:
698 cc (Cubic Centimeters)
Bore Stroke Mm600:
73.0 mm x 73.0 mm (Typical for this engine family)
Bore Stroke Mm700:
82.0 mm x 64.2 mm (Typical for this engine family)
Compression Ratio:
Typically around 7.0:1 to 7.5:1 (Specific value requires manual lookup)
Horsepower Mm600:
Approximately 100-110 HP (Estimated, specific dyno figures vary)
Horsepower Mm700:
Approximately 115-125 HP (Estimated, specific dyno figures vary)
Carburetor Type Mm600:
Dual Mikuni VM34 or similar constant velocity carburetors (Specific model needed)
Carburetor Type Mm700:
Dual Mikuni VM38 or similar constant velocity carburetors (Specific model needed)
Fuel Type:
Unleaded gasoline (87 octane minimum recommended)
Ignition System:
Digital CDI (Capacitor Discharge Ignition) with electronic advance
Lubrication System:
Autolube oil injection system (premix not typically required unless specified for specific conditions)
Cooling System:
Liquid-cooled with thermostat and fan assist
Transmission Type:
Continuously Variable Transmission (CVT) with mechanical engagement
Drive Clutch:
Yamaha Drive (YDC) series, likely YDC 01 or similar
Driven Clutch:
Yamaha Drive (YDR) series, likely YDR 01 or similar
Drive Belt Specifications:
Specific belt number required from manual, crucial for performance and preventing damage.
Gear Ratios:
Variable via CVT (specific engagement/disengagement speeds are critical service data).
Instrument Cluster:
Analog speedometer, tachometer, odometer, trip meter, and various indicator lights (oil, engine, etc.).
No Advanced Driver Assistance:
No electronic driver assistance systems (e.g., ABS, traction control) are present on this model.
No Connectivity Features:
No Bluetooth, Wi-Fi, or smartphone integration features.
Initial Service:
Check drive belt condition and tension at 500-1000 miles or annually.
Engine Oil Change:
Not applicable (2-stroke, oil injected). Focus on checking oil injection system function and reservoir level.
Spark Plug Inspection:
Inspect and gap spark plugs every 1,000 miles or annually.
Clutch Maintenance:
Inspect drive clutch sheave condition, rollers, and springs every 1,000-2,000 miles.
Lubrication Points:
Grease suspension and steering components according to manual's schedule (e.g., every 1,000 miles).
Coolant Type:
Ethylene glycol based antifreeze (50/50 mix with distilled water recommended). Specific Yamaha coolant may be specified.
Oil Injection Oil:
Yamalube 2-stroke oil or equivalent premium synthetic 2-stroke injection oil.
Chaincase Oil:
Yamaha Chaincase oil or equivalent SAE 80W-90 hypoid gear oil.
Brake Fluid:
DOT 3 or DOT 4 brake fluid (Confirm specific requirement in manual).
Common Wear Items:
Drive belts, clutch rollers, suspension bushings, and worn carbides on skis.
Engine Performance Issues:
Carburetor gumming due to fuel storage, ignition coil failure, power valve sticking (if applicable to engine variant).
Yamaha Powersports:
Yamaha has a long-standing history in motorsports and powersports, known for reliability and performance in snowmobiles, motorcycles, and ATVs.
Mm Series Legacy:
The MM series represented Yamaha's focus on performance-oriented trail snowmobiles during this era, building on previous successes.
Manufacturing Location:
Likely manufactured in North America (e.g., USA) or Japan, as per Yamaha's global operations.
