🏷️ Basic Information

Make:

Yamaha

Model:

VMX12

Nickname:

V-Max

Generation:

1st Generation

Model Codes:

VMX1200

👋 Introduction

Market Position:

The Yamaha VMX12, or V-Max, was a groundbreaking power cruiser introduced in 1985, aiming to combine brute force with cruiser styling. It quickly established itself as an icon in the motorcycle world.

Key Competitors:

Honda Magna V45, Suzuki Cavalcade, Kawasaki Voyager XII. The V-Max's unique V4 engine and aggressive styling set it apart.

Unique Selling Points:

Massive V4 engine, V-Boost induction system, distinctive muscle bike styling, high torque output.

📋 Manual Details

Years Covered:

1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007

Page Count:

405

Manual Type:

Workshop Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Mechanical:

Full engine overhaul, cylinder head, pistons, crankshaft, lubrication system, cooling system, valve timing, engine disassembly and assembly procedures, torque specifications.

Fuel System:

Carburetor tuning and overhaul, fuel pump, fuel lines, fuel tank maintenance, fuel filter replacement.

Ignition System:

CDI system, ignition timing, spark plugs, ignition coils, wiring diagrams.

Transmission:

Gearbox disassembly and assembly, clutch operation and adjustment, shift mechanism, transmission fluid specifications and replacement.

Drivetrain:

Shaft drive system maintenance, universal joints, final drive gear oil specifications.

Brakes:

Front and rear brake system overhaul, hydraulic lines, brake fluid specifications, caliper and master cylinder service, brake pad replacement, bleeding procedures.

Suspension:

Front fork service (disassembly, oil change, seal replacement), rear shock absorber service, linkage maintenance.

Steering:

Handlebar assembly, steering head bearing service, steering linkage.

Electrical System:

Wiring diagrams, lighting system, charging system (stator, regulator/rectifier), starter motor, battery specifications, fuses, switches, horn, instrument cluster.

Cooling System:

Radiator service, fan operation, coolant specifications and capacity, thermostat.

Body And Frame:

Frame inspection, body panel removal and installation, seat, fuel tank removal, fairing components.

Wheels And Tires:

Wheel bearing service, tire pressure recommendations, wheel specifications.

Routine Maintenance:

Oil and filter changes, air filter replacement, spark plug replacement, chain adjustment (if applicable), lubrication points.

Troubleshooting:

Diagnostic charts, common problem identification and solutions for engine, electrical, and mechanical issues.

Repair Procedures:

Step-by-step instructions for component disassembly, cleaning, inspection, repair, and reassembly.

Technical Specifications:

Detailed torque values for all fasteners, clearances, fluid capacities, electrical resistance values, diagnostic parameters.

Depth Level:

Comprehensive, suitable for professional technicians and experienced DIY enthusiasts. Covers everything from basic servicing to complete engine and transmission rebuilds.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution scans, clear text and diagrams.

Binding Type:

N/A (Digital PDF Download)

Paper Type:

N/A (Digital PDF Download)

⚙️ Engine Specifications

Engine Type:

Liquid-cooled, 70° V4, 4-stroke

Displacement:

1198 cc (1.2 Liters)

Bore X Stroke:

82.0 mm x 92.0 mm

Compression Ratio:

9.5:1

Valve Train:

DOHC, 3 valves per cylinder (2 intake, 1 exhaust)

Horsepower Approximate:

145 hp @ 9,000 rpm (later models slightly higher)

Torque Approximate:

121 Nm (89 lb-ft) @ 7,000 rpm

Carburetion:

Four Mikuni 35mm constant velocity carburetors with V-Boost electronic intake system

Fuel Capacity:

15 Liters (3.9 US gallons)

Oil Type Recommendation:

Yamalube 4 10W-40 or equivalent API SG, JASO MA

Coolant Type:

50/50 mixture of ethylene glycol coolant and distilled water

🔧 Transmission

Transmission Type:

5-speed constant mesh

Clutch Type:

Wet, multiple-disc

Drive Type:

Shaft drive

Transmission Oil Type:

Yamalube Gear Oil SAE 80 or equivalent

Transmission Oil Capacity:

Approximately 1.3 Liters (check manual for exact figure)

📐 Dimensions

Overall Length:

2300 mm (90.6 in)

Overall Width:

795 mm (31.3 in)

Overall Height:

1160 mm (45.7 in)

Wheelbase:

1600 mm (63.0 in)

Ground Clearance:

150 mm (5.9 in)

Dry Weight Approximate:

250 kg (551 lbs)

Wet Weight Approximate:

265 kg (584 lbs)

🛡️ Safety Features

Safety Ratings:

Motorcycles are not typically subject to the same crash ratings as automobiles. Primary safety features rely on rider skill and vehicle handling characteristics.

Braking System:

Dual 298mm front discs with 4-piston calipers, single 282mm rear disc with 2-piston caliper.

Lighting:

Halogen headlight, taillight, brake lights, turn signals.

Frame Construction:

Steel, double-cradle frame providing robust support.

💡 Technology Features

Infotainment Features:

N/A (Performance-focused motorcycle, lacks modern infotainment systems).

Driver Assistance Features:

N/A (No electronic rider aids like ABS or traction control in this era's models).

Connectivity Features:

N/A (No Bluetooth or smartphone integration).

V Boost System:

Yamaha's proprietary V-Boost system, which opens secondary butterfly valves in the carburetors at higher RPMs (around 6,000-7,000 rpm) to significantly increase intake manifold pressure and boost power delivery.

🔧 Maintenance

Oil Change Interval:

Every 4,000 km (2,500 miles) or 6 months, whichever comes first.

Filter Change Interval:

With every oil change.

Spark Plug Replacement:

Every 12,000 km (7,500 miles).

Valve Clearance Check:

Every 20,000 km (12,500 miles).

Engine Oil Capacity:

3.4 Liters (with filter change)

Brake Fluid Type:

DOT 4

Coolant Capacity:

2.4 Liters

Common Issues And Fixes:

Potential for cam chain tensioner wear (leading to rattling noise), carburetor synchronization issues, occasional charging system component failure (stator, regulator/rectifier). Manual provides troubleshooting for these.

Oil Filter Part Number Example:

Yamaha 5DM-13440-00-00 (verify for specific model year)

Spark Plug Type Example:

NGK CR9E (verify for specific model year)

📚 Vehicle History

Yamaha Motor Corporation:

Founded in 1955, Yamaha Motor Corporation is a Japanese manufacturer renowned for its motorcycles, musical instruments, and other powered products. Known for innovation and performance.

Vmx12 Evolution:

The VMX12 V-Max debuted in 1985 as a radical departure from conventional motorcycle design. It underwent significant updates in 1993 with a larger engine (1198cc), revised chassis, and improved suspension, while retaining its iconic look. The final generation ran until 2007, when it was replaced by the VMAX (1700cc).

Manufacturing Location:

Japan

Production Period:

1985-2007

🏆 Awards & Recognition

Industry Recognition:

Consistently lauded for its outrageous performance and unique styling. Often cited in 'bikes of the decade' lists and recognized as a 'muscle bike' icon.

Owner Satisfaction:

Generally high owner satisfaction for its performance and iconic status, though maintenance can be more involved due to its complex engine.