Target Audience:
Owners of Harley-Davidson SS-250 motorcycles (1975-1976) seeking to perform maintenance, repairs, or diagnostics themselves, as well as independent repair shops.
Value Proposition:
Provides the same level of detail and accuracy as dealership service manuals, enabling cost savings on repairs and fostering a deeper understanding of the vehicle's mechanics.
Content Attributes:
Includes step-by-step instructions, diagrams, illustrations, wiring schematics, and essential specifications.
Accuracy And Conciseness:
Written by manufacturers for clear, concise, and accurate guidance.
Ease Of Use:
Designed to be understandable by individuals with basic mechanical skills, facilitated by clear instructions and visuals.
Engine Management:
Covers engine disassembly, assembly, timing, sealing, and performance tuning.
Fuel System:
Includes carburetor diagnosis and adjustment, fuel tank, fuel lines, and fuel pump (if applicable).
Cooling System:
Details air-cooling system components and maintenance, if applicable to the SS-250.
Drive Train:
Covers clutch operation, engagement, adjustment, and replacement.
Transmission:
Details gearbox operation, maintenance, and repair of internal components.
Chassis And Frame:
Includes frame inspection, repair, and maintenance.
Suspension:
Covers front fork and rear shock absorber maintenance, adjustment, and overhaul.
Brakes:
Details front and rear brake system service, including drum brake components or any disc brake systems.
Wheels And Tires:
Provides information on wheel bearing service, tire pressure, and wheel balancing.
Steering:
Covers steering head bearing maintenance and adjustment.
Electrical System:
Comprehensive coverage of lighting, ignition, charging system, and wiring.
Wiring Diagrams:
Includes detailed, often color-coded, wiring schematics for accurate electrical troubleshooting.
Preventative Maintenance:
Includes recommended service intervals for oil changes, lubrication, filter replacements, and general inspections.
Troubleshooting:
Step-by-step diagnostic procedures for common issues and fault finding.
Repair Procedures:
Detailed instructions for disassembling, repairing, and reassembling all major components.
Engine Rebuild:
Instructions for complete engine overhaul, including piston, ring, and bearing replacement.
Component Adjustment:
Guidance on adjusting clutch, brakes, carburetor, and ignition timing.
Specification Data:
Includes torque specifications, clearances, fluid capacities, and other critical measurements.
Depth Of Information:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, intended for professional mechanics and skilled DIYers.
Engine Type:
Two-stroke, likely single-cylinder (common for this displacement class in that era).
Bore X Stroke:
Specifications would be detailed within the manual.
Compression Ratio:
Specifications would be detailed within the manual.
Horsepower:
Typical for 250cc two-strokes of the era, likely in the 18-25 HP range, exact figures in manual.
Torque:
Specifications would be detailed within the manual.
Carburetor Type:
Likely a single, side-draft or down-draft carburetor (e.g., Mikuni, Keihin), specific model in manual.
Fuel Type:
Pre-mix gasoline/oil or oil injection system (likely pre-mix for this era), specifications in manual.
Oil Change Interval:
Specific interval in hours or miles detailed in the manual (e.g., every 1,000-2,000 miles for a two-stroke).
Spark Plug Replacement:
Recommended interval for optimal performance, specified in the manual.
2-Stroke Oil Mix Ratio:
Critical specification for engine longevity, provided in manual (e.g., 20:1, 32:1).
Transmission Oil Type:
Type and viscosity of gearbox oil specified in manual (e.g., SAE 80W-90 gear oil).
Brake Fluid Type:
DOT specification for brake fluid (if applicable to braking system), detailed in manual.
Common Problems:
Manual likely addresses common issues for this era and engine type, such as carburetor clogging, ignition system faults, wear on two-stroke components, and clutch adjustment.
Manufacturer:
Harley-Davidson, a historic American motorcycle manufacturer renowned for its V-twin cruisers, but also produced smaller displacement and different engine configurations.
Ss Series Context:
The SS series represented Harley-Davidson's attempt to compete in the growing market for smaller-displacement, sportier motorcycles, often utilizing engines sourced or developed in collaboration with European partners (like Aermacchi) during this period.
Production Period:
1975-1976 for this specific manual's coverage.
