Market Position:
The Norton Commando 961 represents a modern interpretation of a classic British motorcycle icon, positioned in the premium retro-modern segment. It appeals to riders seeking heritage, character, and a hands-on riding experience.
Competitive Analysis:
Competes with other premium retro-styled motorcycles from brands like Triumph (Bonneville range), Ducati (Scrambler range), and potentially some offerings from BMW (R nineT series), emphasizing distinct British heritage and unique parallel-twin character.
Key Features:
Signature Norton parallel-twin engine, classic styling cues, premium componentry (e.g., Brembo brakes, Öhlins suspension on certain variants), and a focus on rider engagement and analogue feel.
Engine:
Detailed breakdown of the 961cc parallel-twin engine, including cylinder head, valves, camshafts, crankshaft, pistons, connecting rods, lubrication system, and cooling system.
Fuel System:
Fuel injection system components, fuel pump, injectors, fuel pressure regulator, throttle body, and fuel tank.
Ignition System:
Ignition coils, spark plugs, ECU, and associated wiring.
Transmission:
Gearbox disassembly and assembly, clutch operation and adjustment, shifting mechanism.
Chassis Frame:
Frame construction, steering head bearings, swingarm, and pivot bearings.
Suspension:
Front fork (e.g., Öhlins) and rear shock absorber servicing, adjustment, and replacement. Includes oil types and levels.
Brakes:
Front and rear brake systems, including master cylinders, brake calipers (e.g., Brembo), brake discs, brake pads, brake lines, and bleeding procedures.
Electrical System:
Battery, starter motor, alternator, lighting circuits (headlight, taillight, indicators), wiring diagrams, fuses, relays, and ECU diagnostics.
Exhaust System:
Exhaust manifold, catalytic converter (if applicable), mufflers, and mounting hardware.
Wheels Tires:
Wheel bearing maintenance, tire changing, and balancing.
Bodywork:
Fairings, tank, seat, fenders, and associated trim removal and installation.
Routine Maintenance:
Oil and filter changes, chain lubrication and adjustment, air filter replacement, spark plug inspection and replacement, brake fluid flush, coolant checks.
Troubleshooting:
Diagnostic procedures for common starting issues, engine performance problems, electrical faults, and braking system irregularities.
Engine Overhaul:
Complete engine rebuild procedures, including torque specifications for critical fasteners, piston ring installation, valve clearance adjustment, and gasket replacement.
Transmission Repair:
Gearbox disassembly, inspection of gear sets, bearing replacement, and clutch component servicing.
Suspension Servicing:
Front fork seal replacement, fork oil change, and rear shock absorber servicing or replacement.
Brake System Maintenance:
Brake pad replacement, caliper servicing, brake line replacement, and bleeding procedures.
Electrical Diagnostics:
Wiring harness inspection, troubleshooting electrical shorts and open circuits, charging system testing, and lighting system repair.
Clutch Adjustment:
Proper adjustment of the clutch cable and lever for optimal engagement.
Wheel Alignment:
Instructions for ensuring proper wheel alignment.
Depth Level:
Comprehensive, covering everything from basic maintenance to complete engine and gearbox rebuilds. Includes detailed diagnostic procedures and specifications.
Engine Type:
Parallel-twin, four-stroke
Bore X Stroke:
88 mm x 79 mm (approximate, to be confirmed by manual specifics)
Valve Train:
SOHC, 2 valves per cylinder (pushrod actuated, typically)
Compression Ratio:
10.1:1 (typical, to be confirmed)
Horsepower:
Approx. 80-88 bhp (depending on specific variant and tune, manual will confirm)
Torque:
Approx. 66-72 lb-ft (depending on specific variant and tune, manual will confirm)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Petrol (95 RON recommended, manual will confirm)
Oil Type:
Semi-synthetic or fully synthetic motorcycle oil, typically SAE 10W-50 or 20W-50 (manual will specify exact API/JASO rating).
Oil Capacity:
Approx. 3.5 - 4.0 litres (manual will specify exact capacity with filter change).
First Service:
Typically around 600 miles (1,000 km) for initial break-in service, including oil change and general inspection (manual will confirm exact mileage).
Subsequent Services:
Regular servicing at intervals of 3,000-6,000 miles (5,000-10,000 km) for oil changes, filter replacements, and inspections. Valve clearance checks typically every 6,000-12,000 miles (manual will provide detailed schedule).
Engine Oil Specification:
SAE 10W-50 or 20W-50, JASO MA/MA2 certified semi-synthetic or fully synthetic motorcycle oil. Specific API rating (e.g., API SG or higher) will be detailed.
Brake Fluid Specification:
DOT 4 or DOT 5.1 brake fluid (manual will specify exact type and DOT rating).
Coolant Specification:
If liquid-cooled variants exist, a 50/50 mix of ethylene glycol-based antifreeze and distilled water. Manual will specify type and color.
Gearbox Oil Specification:
Specific gearbox oil or motorcycle-specific engine oil may be used for the gearbox. Manual will confirm.
Common Issues:
While generally robust, potential areas for attention might include clutch adjustment, minor electrical gremlins in early models, and ensuring correct torque settings on critical fasteners during maintenance. The manual will highlight any specific model year bulletins or known common wear points.