Segment:
Cruiser Motorcycle (Mid-size segment, often considered a 'middleweight' cruiser)
Target Audience:
Riders seeking a comfortable, stylish cruiser with reliable Japanese engineering. Appealed to both new and experienced riders looking for a mid-displacement option.
Key Competitors:
Honda Shadow series, Kawasaki Vulcan series, Suzuki Intruder series (in the 700-800cc cruiser class of the mid-1980s).
Design Philosophy:
Yamaha's approach to the cruiser segment, emphasizing smooth V-twin power delivery, comfortable ergonomics, and classic styling cues. The Maxim line often had a slightly more performance-oriented or 'sport cruiser' edge compared to some rivals.
Distinctive Attributes:
The 700cc V-twin engine, shaft drive for low maintenance, and stylish aesthetics were defining characteristics. The 1985-1986 models likely represented a refinement of earlier Maxim designs.
Engine Mechanical:
Engine assembly, disassembly, inspection, repair, valve adjustments, piston/cylinder work, crankshaft, camshafts, timing chain/gears, lubrication system.
Fuel System:
Carburetor (likely CV-type dual carbs) disassembly, cleaning, adjustment, synchronization, fuel pump, fuel lines, fuel tank, fuel filter.
Ignition System:
Ignition coil testing, spark plug specifications, CDI unit (if applicable), wiring diagrams for ignition system, timing pickup.
Transmission Drivetrain:
Clutch operation, transmission disassembly/assembly, gear inspection, drive shaft, final drive (likely shaft drive) inspection and maintenance.
Electrical System:
Wiring diagrams, battery specifications, charging system (stator, rectifier/regulator), lighting circuits, starter system, horn, switches, fuse box.
Brakes:
Brake fluid specifications, hydraulic system (master cylinder, calipers, lines), pad/shoe replacement, disc/drum inspection, bleeding procedure.
Suspension Steering:
Front fork disassembly, seal replacement, oil specifications, rear shock absorber adjustment/replacement, steering head bearing maintenance, wheel bearing service.
Chassis Frame:
Frame inspection, mounting points, general chassis component tightening specifications.
Bodywork Fittings:
Fairing (if applicable), fuel tank mounting, seat removal, fender attachment, control cable routing, accessory mounting.
Routine Maintenance:
Oil change intervals and specifications, filter replacement, spark plug maintenance, chain lubrication (if applicable), air filter cleaning/replacement, brake fluid changes.
Troubleshooting:
Diagnostic charts for common starting, running, electrical, and braking issues. Symptom-based problem diagnosis.
Major Repairs:
Complete engine rebuild procedures, transmission overhauls, suspension component replacement, carburetor rebuilding, electrical system diagnostics and repair.
Adjustments:
Carburetor synchronization, idle speed adjustment, throttle cable free play, clutch lever free play, brake lever free play.
Torque Specifications:
Detailed torque values for all critical fasteners across various systems (engine, chassis, wheels, brakes).
Depth:
Comprehensive. Covers everything from basic maintenance tasks to complete engine and transmission rebuilds. Designed for certified technicians and advanced DIY mechanics.
Diagnostics:
In-depth diagnostic procedures, including electrical testing with multimeter, component resistance and voltage checks, and troubleshooting flowcharts.
Special Tools:
Lists required special tools or Yamaha-specific tools for certain repair procedures (e.g., clutch spring compressor, valve shim tool).
Engine Type:
Air-cooled, 4-stroke, SOHC, 4-valve per cylinder, V-twin
Displacement:
698cc (or 700cc, depending on exact designation and market)
Bore X Stroke:
Typically around 70.0 mm x 90.0 mm (requires specific model code for exact figures)
Compression Ratio:
Likely in the range of 8.5:1 to 9.5:1
Engine Layout:
60-degree V-twin
Horsepower:
Estimated 50-55 HP (at crank, typical for this class and era)
Torque:
Estimated 40-45 lb-ft (at crank, typical for this class and era)
Carburetion:
Dual Mikuni carburetors (likely CV type, e.g., VM34 or similar)
Fuel Type:
Unleaded gasoline (minimum octane rating specified in manual, likely 87 AKI / 91 RON)
Length:
Approx. 2250 mm (requires specific model data)
Width:
Approx. 820 mm (requires specific model data)
Height:
Approx. 1190 mm (requires specific model data)
Wheelbase:
Approx. 1500 mm (requires specific model data)
Dry Weight:
Approx. 200-210 kg (requires specific model data)
Wet Weight:
Approx. 215-225 kg (with all fluids, requires specific model data)
Fuel Capacity:
Approx. 15-16 Liters (requires specific model data)
Safety Certifications:
Motorcycles of this era were subject to national vehicle safety standards (e.g., DOT regulations in the US for helmets, though not typically for the bike itself in a crash-test sense). The manual will cover safe operating procedures.
Braking System:
Dual disc front brakes, single disc rear brake (or drum brake on some early/lower spec models - confirm with manual). Hydraulic actuation.
Lighting:
Headlight, taillight, brake lights, turn signals. System voltage typically 12V.
Frame Construction:
Steel cradle frame, designed for stability and rider control. The manual details frame inspection and any related repair procedures.
Ergonomics:
Cruiser-style riding position with forward-mounted foot controls and a relatively low seat height, contributing to rider confidence and control.
Oil Change:
Typically every 3,000-5,000 km or 6-12 months (specified precisely in manual, including oil type and capacity).
Valve Clearance:
Typically checked and adjusted every 10,000-15,000 km (requires checking in manual for exact interval and procedure).
Spark Plugs:
Replacement interval typically 15,000-20,000 km, but inspection is crucial. Manual will specify plug type (e.g., NGK DR7EA or similar).
Engine Oil:
Yamaha recommends specific viscosity grades (e.g., SAE 10W-40 or 20W-40) and API service classification (e.g., SF or SG). Capacity around 2.5-3.0 Liters with filter change. Manual will confirm exact specs.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (specified in manual). Should be replaced every 1-2 years due to hygroscopic nature.
Fork Oil:
Specific fork oil viscosity and level (e.g., SAE 10W, approx. 180-200 ml per fork leg). Manual will provide exact details.
Final Drive Oil:
Gear oil specification (e.g., SAE 80W-90 GL-5) and capacity will be listed in the manual.
Carburetor Wear:
Older carburetors can develop wear in slides, jets, and seals, leading to poor idle, inconsistent fuel delivery, and tuning difficulties. Manual provides cleaning and adjustment procedures.
Electrical Connections:
Corrosion or looseness in electrical connectors, especially grounds, can cause intermittent issues. Manual's wiring diagrams and troubleshooting sections are vital.
Suspension Seals:
Front fork seals are prone to age-related deterioration, leading to oil leaks. Manual details seal replacement procedures.
Shaft Drive Maintenance:
While generally reliable, proper lubrication and inspection of the final drive splines and universal joint are important to prevent wear. Manual covers these checks.
Yamaha Motorcycles:
Yamaha Motor Company, founded in 1955, has a long and storied history in motorcycle manufacturing, known for innovation, performance, and reliability across various segments including sport bikes, touring bikes, and cruisers.
Maxim Line:
The Maxim line was Yamaha's entry into the burgeoning cruiser market of the early 1980s. It aimed to blend classic cruiser styling with more modern engine technology and performance. The 700cc V-twin was a significant step for Yamaha in this segment.
1985 1986 Context:
These model years represent a mature stage of the Maxim 700, likely with refinements over earlier versions. The cruiser market was highly competitive, and Yamaha sought to offer a well-rounded package.
Production Period:
The Maxim 700 was produced for a limited period, with the 1985-1986 models being key examples. Yamaha would later introduce other cruiser lines like the V-Star.
