Model:
1659, 1661, 1662, 1663, 1664, 1667 Medium Frame Tractor
Product Type:
Complete Workshop Service Repair Manual
Series Identifier:
Medium Frame Tractor Series
Target Audience:
Bolens tractor owners and independent repair shops seeking comprehensive service information.
Value Proposition:
Enables significant cost savings on repairs and maintenance by empowering users to perform their own servicing.
Instruction Style:
Step-by-step instructions with accompanying pictures for clarity and ease of use.
Accessibility:
Downloadable to multiple devices (PC, MAC, tablets, smartphones) for convenient access.
Coverage Scope:
All Models, Engines, Trim, and Transmission Types within the 1659-1667 Series
Estimated Page Count:
Comprehensive (Exact number not specified, but implies full workshop content)
Type:
Workshop Service and Repair Manual
Format:
Downloadable Digital File (PDF recommended for printing and device compatibility)
Powertrain:
Engine, Fuel System, Cooling System, Exhaust System, Clutch, Transmission, Drivetrain, Differentials, PTO (Power Take-Off), Hydraulic System
Chassis And Frame:
Frame, Steering System, Suspension (Front and Rear), Brakes (Mechanical and Hydraulic Aspects), Axles
Electrical And Accessories:
Ignition System, Starting System, Charging System, Lighting System, Wiring Diagrams, Instrumentation, Accessories (where applicable to tractor function)
Operator Station And Body:
Operator controls, Seat, Fenders, Hood, Decals, Operator Safety Features
Routine Maintenance:
Oil and filter changes, Lubrication points, Fuel filter replacement, Air filter servicing, Coolant checks and replacement, Battery maintenance, Tire pressure checks
Troubleshooting And Diagnostics:
System-specific diagnostic procedures, symptom identification, fault finding charts, electrical troubleshooting (using wiring diagrams)
Mechanical Repairs:
Engine overhaul (pistons, rings, bearings, cylinder heads), Transmission disassembly and reassembly, Clutch replacement, Brake system repairs, Steering linkage overhauls, Hydraulic pump and cylinder servicing
Electrical Repairs:
Component testing (starter, alternator), Wiring harness repair, Switch and sensor replacement, Lighting system troubleshooting
Depth:
Complete Workshop Level: Covering everything from routine maintenance and adjustments to complete engine, transmission, and hydraulic system overhauls.
Diagnostic Capability:
Advanced diagnostics and troubleshooting procedures, supported by detailed explanations and diagrams.
Recommended Software:
Adobe Reader (Free, universally compatible)
Printability:
High-quality, printable by chapter or in its entirety.
Binding Style Digital:
N/A (Digital Download)
Paper Quality Recommendation:
Standard printer paper for home printing; heavy-duty paper recommended for workshop use.
Engine Type:
Likely air-cooled, gasoline-powered industrial or agricultural engines (specific models vary by tractor variant, e.g., Kohler, Onan, or Briggs & Stratton).
Horsepower Range Estimated:
Approximately 16-20 HP (based on model numbers and typical tractor classifications of the era).
Carburetor Type:
Likely single-barrel or two-barrel carburetor, specific to engine model.
Ignition Type:
Battery-coil ignition or magneto ignition, depending on specific engine and model year.
Cooling Method:
Air-cooled
Transmission Type:
Likely a geared transmission, potentially 3-speed, 4-speed, or 6-speed manual, with a selectable high/low range (Hi/Lo).
Hydrostatic Transmission:
Some medium-frame tractors of this era offered hydrostatic transmissions as an option. This manual should cover both if applicable.
Drive Configuration:
2-wheel drive (RWD), with possible differential lock.
Gear Ratio Coverage:
Detailed gear ratios for all forward and reverse gears will be included for diagnostic and repair purposes.
Wheelbase Estimate:
Approximate wheelbase of 50-55 inches (1270-1400 mm), depending on specific model and configuration.
Operating Weight Estimate:
Likely in the range of 900-1200 lbs (408-544 kg) without attachments.
Axle Weight Front Estimate:
Estimated front axle weight of 250-350 lbs (113-159 kg).
Axle Weight Rear Estimate:
Estimated rear axle weight of 650-850 lbs (295-386 kg).
Safety Standards Era:
Adherence to safety standards prevalent during the production era (late 1970s to early 1980s) for agricultural tractors.
Operator Presence:
Likely includes a seat-actuated kill switch for engine shutdown when operator leaves the seat.
Guards And Shields:
Information on guards for PTO, belts, and other rotating components.
Braking System Type:
Mechanical band brakes or drum brakes, integrated into the rear axle or transmission.
Engine Oil Change:
Typically every 50 operating hours or annually, whichever comes first (specific interval dependent on engine manufacturer).
Air Filter Service:
Check before each use; clean or replace as needed, especially in dusty conditions.
Fuel Filter Replacement:
Recommended every 100-200 operating hours or annually.
Transmission Oil Change:
Typically every 200-400 operating hours or every 2 years, with a focus on checking for metal particles in the old oil.
Engine Oil Type:
SAE 30W or 10W-30 (depending on ambient temperature and specific engine recommendation). API Service Classification SG or higher.
Transmission Fluid Type:
GL-1 Gear Lube, SAE 80W-90 or SAE 90 (specific viscosity depends on operating temperature, check manual for exact recommendation).
Hydraulic Fluid Type:
Universal Tractor Transmission Fluid (UTTF) or ISO VG 32/46 hydraulic oil, depending on hydraulic system requirements. Consult manual for specific capacity and type.
Coolant Type:
For liquid-cooled engines (less common in this frame size, but possible), a mixture of permanent antifreeze and water. For air-cooled, focus is on keeping fins clean.
Common Wear Points:
Wear in the steering components (tie rods, kingpins), PTO engagement collars, and hydraulic system seals due to age and usage.
Electrical System Aging:
Fraying wires, corroded connections, and failing starter solenoids or alternators are common due to age.
Carburetor Issues:
Clogged or worn carburetors leading to hard starting, rough running, or stalling.
Bolens Legacy:
Bolens has a long history of manufacturing reliable garden tractors and utility tractors, known for their durability and user-friendliness.
Series Introduction:
The medium-frame series, including models like the 1659 through 1667, represented a significant step up in capability from smaller garden tractors, offering more power and utility for property maintenance and light agricultural tasks.
Production Period Estimate:
These models were likely produced in the late 1970s to early 1980s.
