Provider:
ClassicCirculations.com
Offering Type:
OEM Manuals and Factory Authorized Reprints
Advantage:
Instant download, no shipping costs, lifetime protection policy for lost/damaged files
Accessibility:
Usable on smart devices for trailside repairs
Utility:
Printable pages for specific repair jobs, reducing wear on original documents
Engine:
Complete engine overhaul, disassembly, assembly, troubleshooting, specifications
Fuel System:
Carburetor adjustment, fuel pump service, fuel line routing, fuel tank maintenance
Lubrication Cooling:
Oil change procedures, lubrication points, cooling system maintenance (if applicable)
Transmission Drivetrain:
Drive chain adjustment and replacement, sprocket inspection, clutch service (if applicable), driven clutch maintenance
Electrical System:
Ignition system troubleshooting, lighting, starter motor, wiring diagrams, magneto service
Steering Suspension:
Steering linkage adjustment, ski alignment, shock absorber service and replacement
Bodywork Chassis:
Body panel removal and installation, chassis lubrication, track system inspection
Intake Exhaust:
Airbox cleaning, exhaust system inspection and repair
Track System:
Track inspection, tensioning, replacement, and related components (bogies, suspension).
Skis Spindles:
Ski alignment, spindle inspection, and wear assessment.
Routine Maintenance:
Pre-ride checks, cleaning, lubrication, track tensioning
Engine Repair:
Engine removal/installation, piston replacement, cylinder head service, gasket replacement
Troubleshooting:
Diagnostic charts for common performance issues, starting problems, and system malfunctions
Component Rebuild:
Detailed instructions for rebuilding carburetors, pumps, and other key components
Component Replacement:
Detailed steps for replacing major components like engines, clutches, shocks, and body panels.
Depth:
Comprehensive OEM factory service and repair information
Diagnostic Charts:
Systematic troubleshooting guides for identifying and resolving issues.
Specifications Data:
Torque specifications, tolerances, electrical resistance values, and other critical data for accurate repairs.
Make:
Mercury (Note: Mercury often used engines from other manufacturers like Kawasaki or Sachs during this period, the manual would detail the specific OEM engine)
Displacement Range:
Likely 250cc to 440cc+ across the covered models
Configuration:
Typically 1 or 2-cylinder, 2-stroke, fan-cooled or air-cooled engines
Horsepower Range:
Estimated 30-70 HP depending on model and displacement
Carburetor Type:
Likely Tillotson, Mikuni, or Walbro carburetors (specific models will be detailed)
Fuel Type:
Gasoline/Oil mixture (typical for 2-stroke engines of the era)
Crash Testing:
N/A (Snowmobiles of this era were not subject to automotive-style crash testing) - Safety would focus on operational safety and handling.
Braking System:
Disc brake or drum brake system, service and maintenance procedures
Handlebars Controls:
Throttle control, brake lever, kill switch functionality
General Recommendations:
Daily checks, mileage/hours-based service for specific components (detailed in manual)
Engine Oil:
Specific 2-stroke oil mix ratio and type (e.g., API-TC certified) will be detailed in the manual.
Gearcase Oil:
Specific gear oil viscosity (e.g., SAE 80W-90) will be specified for the chaincase/gearbox.
Common Problems Era:
Carburetor gumming, clutch wear, drive chain stretch, track wear, ignition coil failure, recoil starter issues.
Catalog Inclusion:
While described as a repair manual, OEM manuals often contain parts diagrams and numbers. The description implies comprehensive coverage which would likely include this.
Manufacturer:
Mercury Marine (Marine Group of Brunswick Corporation), known for marine engines and later snowmobiles.
Product Line:
Mercury snowmobiles were part of the company's diversification into powersports. The 'Twister' line was particularly prominent.
Era Context:
The 1970s were a boom period for snowmobile manufacturing, with significant competition and technological advancements.
