This master parts manual covers Bolens tractor models HT 20, 1250, 1455, 1476, 1477, and 1886, produced between 1967 and 1972, with specific year ranges varying per model. Bolens, a historically significant manufacturer of garden tractors, produced these robust and versatile machines during a key period of development in tractor technology. These tractors are known for their durability and capability, making them sought after by owners, restorers, and mechanics. This comprehensive resource is designed to provide unparalleled completeness for parts identification and procurement, depicting every single part on the specified tractor models.
This manual serves as an essential guide for maintaining and repairing your Bolens tractor. It offers an exhaustive breakdown of all parts, including detailed assembly diagrams, clear part identification with associated part numbers, and illustrations showing component relationships. Coverage extends to all major systems, including the engine, drivetrain, chassis, hydraulics, electrical system, and operator controls, as well as attachments and accessories. The manual's primary utility lies in its ability to support accurate repairs and the sourcing of correct replacement components, making it an indispensable tool for Bolens tractor owners, restorers, mechanics, and parts suppliers.
Product Type:
Master Parts Manuals
Product Description:
The most complete set of Bolens parts manuals you can buy....Period! Showing EVERY part on these tractors. Great for making repairs!!!!!!!
Covered Models:
HT 20, 1250, 1455, 1476, 1477, 1886
Covered Years:
1967-1972 (specific year ranges per model)
Target Audience:
Bolens tractor owners, restorers, mechanics, and parts suppliers
Value Proposition:
Unparalleled completeness for parts identification and procurement for classic Bolens garden tractors
Differentiation:
Claims to be the 'most complete set of Bolens parts manuals you can buy....Period!'
Comprehensiveness:
Depicts every single part on the specified tractor models
Utility:
Essential for accurate repairs and sourcing correct replacement components
Primary Coverage:
All parts breakdown for specified Bolens tractor models
Secondary Coverage:
Assembly diagrams, part identification, component relationships
Estimated Total Pages:
Extensive (Specific count not provided, but described as 'most complete')
Type:
Master Parts Manuals / Parts Catalogs
Engine:
Engine components, internal parts, fuel system, lubrication system, cooling system
Drivetrain:
Transmission, differential, axles, PTO (Power Take-Off) components
Chassis And Frame:
Frame components, steering system parts, suspension components (if applicable)
Hydraulics:
Hydraulic pump, cylinders, hoses, control valves, and associated fittings
Electrical System:
Starter, alternator/generator, battery, ignition system components, lighting components
Operator Controls:
Levers, pedals, steering wheel, instrument panel components
Attachments And Accessories:
Mounting hardware, common attachment components (e.g., mower deck parts, loader parts - depending on specific model coverage within manual)
Assembly Disassembly:
Illustrated breakdown of components for assembly and disassembly
Part Identification:
Detailed identification of every individual part with associated part numbers
Troubleshooting:
Implied support for troubleshooting by identifying correct replacement parts
Depth:
Comprehensive parts catalog level detail, suitable for repair and restoration
Scope:
Every nut, bolt, gasket, and major component is depicted and numbered
Compatibility:
All versions of Windows, Mac, and Linux
Requirements:
Adobe PDF Reader
Binding:
N/A (Digital Download)
Paper:
N/A (Digital Download)
Delivery Method:
Instant High Speed Download
Engine Type:
Varies by model; likely 4-stroke gasoline engines (specifics require manual consultation)
Displacement:
Varies by model (e.g., HT20 likely denotes a larger displacement engine than a 1250)
Bore Stroke:
Varies by model (detailed in manual)
Horsepower:
Varies by model (e.g., 1250 suggests ~12 HP, 1886 suggests ~18 HP)
Torque:
Varies by model (detailed in manual)
Fuel Delivery:
Likely carburetor-based fuel systems (specifics vary by engine)
Oil Type Recommendation:
Specific SAE viscosity grade and API service classification provided in manual (likely SAE 30 or 10W-30)
Cooling Method:
Likely air-cooled for most models, some might be liquid-cooled (manual will specify)
Type:
Varies by model. Likely manual transaxle, hydrostatic, or possibly an early automatic transmission.
Gear Selection:
Manual shift (e.g., 3-speed, 4-speed, 6-speed) or variable speed control (hydrostatic)
Optional Types:
Hydrostatic transmission likely an option on some models, or different gear ratios available.
Pto:
Power Take-Off (PTO) system components (rear and/or mid-PTO depending on model)
Differential Lock:
May be present on some models; parts for differential and locking mechanism included
Transmission Oil Type:
Specific gear oil or hydraulic fluid specification provided in manual (e.g., SAE 90 gear oil, or specific hydrostatic fluid)
Wheelbase:
Varies by model (detailed in manual)
Overall Length:
Varies by model (detailed in manual)
Overall Width:
Varies by model (detailed in manual)
Overall Height:
Varies by model (detailed in manual)
Cargo Capacity:
N/A (Tractor - refers to implement/hauling capacity)
Shipping Weight:
Varies by model (detailed in manual)
Operating Weight:
Varies by model (detailed in manual)
Front Tire Size:
Varies by model (e.g., 4.00-8, 6.00-12, etc.)
Rear Tire Size:
Varies by model (e.g., 8-16, 10-18, 12-16.5, etc.)
Wheel Bolt Pattern:
Varies by model (detailed in manual)
Safety Certifications:
Varies by era and region; manual focuses on part identification for safe operation and repair.
Braking System:
Parts for mechanical drum brakes or disc brakes (depending on model) and parking brake mechanism
Steering Mechanism:
Parts for steering gearbox, tie rods, drag links, and steering shafts
Operator Station:
Parts related to operator controls, footrests, and basic platform/seat mounting
Guarding:
Parts for PTO shields, belt guards, and other safety guards
Infotainment System:
N/A (Basic tractor design)
Driver Assistance Features:
N/A (Basic tractor design)
Connectivity Options:
N/A (Basic tractor design)
Instrument Panel:
Parts for basic gauges (ammeter, oil pressure, temperature if applicable) and warning lights.
Engine Oil Change:
Refer to original owner's manual or engine service manual; typically every 50-100 operating hours, or annually.
Gear Oil Change:
Refer to original owner's manual or transmission service manual; typically annually or every 200-300 operating hours.
Lubrication Points:
Grease fittings on steering components, linkages, wheel bearings, and PTO shafts should be serviced regularly (refer to manual for specific locations and frequency).
Engine Oil Viscosity:
SAE 30 or SAE 10W-30 (confirm specific engine requirement in original documentation or manual)
Engine Oil API Classification:
API SF or SG (or equivalent for older oils) (confirm specific engine requirement)
Transmission Oil Type:
SAE 90 Gear Oil or specialized hydrostatic fluid (confirm specific model requirement)
Hydraulic Fluid Type:
If applicable, specific tractor hydraulic fluid or JD-specific fluid may be recommended (confirm in manual).
Common Wear Items:
Wear on steering components, clutch friction discs, PTO engagement mechanisms, and hydraulic pump seals.
Electrical Challenges:
Age-related degradation of wiring harnesses, switches, and starter solenoids.
Engine Carburetion:
Gumming and clogging of carburetors due to fuel degradation over time; ignition system maintenance.
Manufacturer:
Bolens Garden Tractors (part of FMC Corporation during this era)
Legacy:
Bolens was a prominent manufacturer of garden tractors, known for their robustness and versatility during the mid to late 20th century.
Series Development:
The covered models (HT 20, 1250, 1455, 1476, 1477, 1886) represent different power levels and feature sets within the Bolens product line during a key period of development.
Production Period Overview:
The period of 1967-1972 saw significant advancements in garden tractor technology, with Bolens offering a range of models to meet diverse consumer needs.
Model Specific Years:
HT 20 (1973-1981), 1250 (1967-1969), 1455 (1969), 1476 (1970-1971), 1477 (1971), 1886 (1971-1972)
Brand Reputation:
Bolens tractors from this era are generally regarded as durable and capable machines within the enthusiast community.
Consumer Ratings:
N/A (Historical context implies positive reputation among users of the time)
Industry Standards:
Manual adheres to industry standards for parts cataloging by providing clear part numbers and diagrams.
