Positioning:
The Triumph Trophy 650 was a significant model for Triumph, representing their prowess in the large-displacement parallel-twin motorcycle market, appealing to both everyday riders and those seeking performance for touring and spirited riding.
Competitors:
Competed with other British motorcycles like Norton and BSA, as well as burgeoning Japanese offerings from Honda, Yamaha, and Kawasaki in the same displacement class.
Vehicle Appeal:
Renowned for its strong torque, comfortable ride (especially the TR6R), and distinctive British character. The TR6C offered a more robust setup for off-road and dual-purpose use.
Value Proposition:
Provides essential technical data for maintaining and repairing a classic British motorcycle, enabling owners to preserve its performance and originality. The PDF format offers immediate access and portability.
Years Covered:
1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974
Estimated Page Count:
Comprehensive (Specific count not provided in product info, but described as 'most complete' and covering 'every single detail')
Type:
Service Repair Manual
Engine Mechanical:
Complete overhaul, piston and ring replacement, cylinder head service, valve train, crankshaft, connecting rods, camshafts, timing
Fuel System:
Carburetor (Amal Concentric) tuning, overhaul, jetting, fuel tank, fuel lines, fuel pump (if applicable)
Ignition System:
Magneto, contact breaker points, condenser, spark plugs, timing adjustment
Transmission Gearbox:
Gearbox overhaul, clutch adjustment and replacement, gear selection, lubrication, gearbox ratios
Clutch:
Wet multi-plate clutch service, pressure plate, friction plates, steel plates, springs, primary drive chain and sprockets
Electrical System:
Wiring diagrams, lighting system, charging system (alternator/generator), battery, switches, horn, indicators
Brakes:
Front and rear brake systems (drum brakes for this era), brake shoe replacement, cable adjustment, hydraulic systems (if applicable to later models in the range)
Suspension:
Front fork (Telescopic), rear shock absorbers, swing arm lubrication and bearing service
Frame Chassis:
Frame inspection, steering head bearings, wheel bearings, wheel truing and spoke replacement
Bodywork:
Fuel tank removal and installation, seat, fenders, side panels
Maintenance:
Regular servicing, oil changes, filter replacement, lubrication points, chain adjustment, bolt torquing
Troubleshooting:
Diagnostic guides for common starting, running, and electrical issues. Troubleshooting flowcharts.
Repair:
Step-by-step repair instructions for all major components and systems, from minor adjustments to full engine rebuilds.
Disassembly Reassembly:
Detailed instructions for complete disassembly and reassembly of the motorcycle.
Depth:
Comprehensive, suitable for both novice DIY mechanics and experienced professionals. Covers detailed diagnostics and overhaul procedures.
Engine Type:
Air-cooled, parallel-twin, four-stroke
Bore X Stroke:
71 mm x 82 mm (approximately)
Compression Ratio:
7.3:1 (typical for the era)
Horsepower:
Approximately 45-50 bhp at 6,500 rpm (varies by tuning and year)
Torque:
Not explicitly stated, but known for strong mid-range torque.
Carburetion:
Single Amal Concentric carburetor (e.g., 930 or 932 series), or dual carburetors on some performance variants.
Fuel Type:
Leaded gasoline (pre-unleaded era) with appropriate octane rating.
Crash Test Results:
N/A (Vehicle safety ratings as understood today were not applicable to motorcycles of this era)
Braking System:
Drum brakes front and rear, requiring careful modulation. Twin leading shoe front brake on some models for improved stopping power.
Lighting:
Headlight, taillight, brake light, and often turn signals (depending on market and year).
Oil Change:
Typically every 2,000-3,000 miles, or annually. Manual will specify exact interval and oil type.
Valve Clearance:
Recommended checking at approximately 3,000-5,000 mile intervals.
Chain Adjustment:
Regularly, before each long ride and as needed based on slack.
Engine Oil:
Viscosity grade typically 20W-50 or 20W-40. Specific Triumph oil recommendations or equivalent. Note that the gearbox and primary chain share engine oil.
Fork Oil:
Specific viscosity grade (e.g., SAE 10W or 20W) and quantity per fork leg. Manual will detail.
Oil Leaks:
Common with motorcycles of this era due to older sealing technologies and potential wear. Gaskets and seals may require regular inspection and replacement.
Electrical Gremlins:
Aging wiring harnesses and connections can lead to intermittent electrical faults. Regular inspection and maintenance of the charging system are crucial.
Carburetor Tuning:
Amal Concentric carburetors require periodic tuning to maintain optimal performance and fuel economy, especially with fuel changes over time.
Clutch Drag:
Can occur if clutch plates are worn or if oil is too thick. Proper adjustment and fluid are key.
Triumph Legacy:
Triumph Motorcycles has a long and storied history in British motorcycling, renowned for its parallel-twin engines and performance motorcycles that captured the spirit of the 1950s and 60s.
Tr6 Development:
The Trophy line evolved from earlier Bonneville and Tiger models, incorporating advancements in engine design and chassis for improved performance and reliability. The TR6R and TR6C were distinct variants catering to different rider needs.
Manufacturing Era:
Produced during a period of significant change in the motorcycle industry, with Triumph striving to maintain its market share against increasing international competition.
Historical Significance:
The Triumph 650 Trophy models are considered iconic British motorcycles, celebrated for their contribution to motorcycling history and their enduring appeal among enthusiasts.
Enthusiast Appreciation:
Highly regarded in classic motorcycle circles for performance, style, and historical significance.
Manual Accuracy:
Guaranteed to be fully useful and accurate, representing the standard used in local service repair shops. Contains professional technical information.
