Positioning:
Essential resource for owners and independent mechanics specializing in classic Harley-Davidson motorcycles
Alternatives:
May supplement or replace factory service bulletins of the era; often considered superior to generic repair guides for accuracy and detail.
Features:
Directly addresses the specific needs of the 1974-1976 SS models, providing critical information often missing in generalized manuals.
Audience:
Harley-Davidson enthusiasts, vintage motorcycle restorers, mechanics working on Shovelhead era bikes.
Primary Coverage:
Comprehensive service, repair, and maintenance
Secondary Coverage:
Troubleshooting, electrical diagrams, specifications
Estimated Page Count:
350+
Type:
Factory Service Manual / Repair Manual
Engine:
Complete overhaul, tuning, carburetor servicing, ignition system, oil system
Transmission:
4-speed gearbox servicing, clutch operation, primary drive maintenance
Chassis And Suspension:
Frame, forks, swingarm, shock absorbers, wheel bearings, steering head
Brakes:
Front and rear brake system maintenance, caliper service, hydraulic lines
Electrical:
Wiring diagrams, lighting, ignition, charging system (generator/alternator), battery service
Fuel System:
Fuel tank, petcock, fuel lines, carburetor (e.g., Keihin butterfly or Linkert on earlier models, but this manual likely covers the specific SS carburation)
Bodywork And Trim:
Fender mounting, tank installation, seat assembly, controls
Routine Maintenance:
Oil changes, filter replacement, spark plug service, chain adjustment, brake checks
Troubleshooting:
Diagnosis of common problems, symptom-based repair guidance
Engine Rebuild:
Piston and ring replacement, cylinder head service, crankshaft and connecting rod inspection
Transmission Rebuild:
Gearset overhaul, bearing replacement, shift drum and fork service
Electrical Diagnostics:
Component testing, circuit tracing, troubleshooting lighting and charging issues
Depth:
Comprehensive from basic adjustments to complete engine and transmission rebuilds
Detail Level:
Detailed step-by-step instructions with torque specifications, clearances, and assembly sequences
Format:
Printed Book (likely high-quality paper)
Quality:
Professional printing, clear diagrams and text
Binding:
Saddle-stitched or perfect bound (typical for aftermarket manuals of this era)
Paper:
Durable, possibly gloss or semi-gloss paper suitable for workshop environments
Engine Type:
Air-cooled, 45-degree V-twin
Engine Displacement Cc:
1200cc (74 cubic inches)
Engine Displacement Ci:
74 cu in
Bore X Stroke In:
3.4375 in x 4.00 in
Bore X Stroke Mm:
87.31 mm x 101.6 mm
Compression Ratio:
Approx. 8.0:1 to 8.5:1 (depending on specific configuration and year)
Horsepower Estimated Hp:
Approx. 55-60 hp @ 5500-6000 RPM (net)
Torque Estimated Lb-Ft:
Approx. 65-70 lb-ft @ 3500-4000 RPM
Carburetor Type:
Specific to model year, likely Keihin butterfly type for this era (e.g., Keihin butterfly, possibly a specific model like CV)
Fuel Type:
Unleaded gasoline, minimum 87 octane (91 RON)
Ignition Type:
Contact breaker points ignition (typically)
Transmission Type:
4-speed constant mesh, foot-shift, hand-clutch (left side)
Primary Drive:
Duplex chain (inside primary cover), wet clutch
Final Drive:
Belt drive or chain drive (depending on exact model/options)
Clutch Type:
Multi-plate, wet type, diaphragm spring actuation
Wheelbase In:
Approx. 60.5 inches (1537 mm)
Seat Height In:
Approx. 29 inches (737 mm) (unladen)
Dry Weight Lbs:
Approx. 570-600 lbs (259-272 kg) (depending on model specifics)
Gross Vehicle Weight Rating Lbs:
Not typically specified as a GVWR, but frame capacity is implied.
Crash Testing:
Not applicable for vintage motorcycles in the modern sense. Emphasis on rider control and mechanical integrity.
Active Safety:
Effective braking systems (for the era), predictable handling characteristics.
Passive Safety:
Sturdy frame construction, reliable mechanical components.
Oil Change Interval Miles:
Every 2,000-3,000 miles or annually (dependent on oil type and riding conditions).
Primary Chain Tension Check:
Every oil change or 2,500 miles.
Spark Plug Replacement:
Every 5,000-10,000 miles or as needed based on condition.
Engine Oil Type:
Viscosity 20W50 or 50W, specifically formulated for V-twins (e.g., Harley-Davidson Genuine Motor Oil, or equivalent API SG/SH rated oil).
Transmission Oil Type:
Gear oil for motorcycles, typically 80W90 or 90W.
Primary Chain Case Oil Type:
Harley-Davidson Primary Chain Lubricant, or similar light gear oil/transmission fluid compatible with wet clutches.
Brake Fluid Type:
DOT 4 hydraulic brake fluid (if hydraulic brakes are standard on the SS model, disc front/rear).
Common Issues:
Oil leaks (especially from rocker boxes and crankcase seals), carburetor tuning difficulties, potential for valve seat wear, ignition timing sensitivity, primary chain adjustment neglect.
Maintenance Recommendations:
Regular inspection of the primary chain tension, careful monitoring of oil levels, and diligent carburetor maintenance are crucial.
Heritage:
Harley-Davidson, a legendary American motorcycle manufacturer with a rich history dating back to 1903.
Evolution:
The 'SS' designation often referred to sportier or more performance-oriented versions of standard models, building upon the iconic 'Shovelhead' engine platform introduced in 1966.
Production Period:
The 'Shovelhead' engine itself was produced from 1966 through 1984. This manual covers a specific performance variant within that broader period.
Manufacturing Location:
Milwaukee, Wisconsin, USA.
