Market Segment:
Compact to utility tractors, popular in agricultural and municipal sectors.
Competitors:
Massey Ferguson, John Deere, Ford/New Holland, Ursus, Belarus (MTZ) in similar HP ranges and utility classes of their era.
Manufacturer Focus:
Zetor tractors are known for their robust construction, simplicity, and reliability, often emphasizing value for money.
Primary Coverage:
Operation, Routine Maintenance, Troubleshooting, Repair, Overhaul
Estimated Page Count:
Variable, typically 300-600 pages for comprehensive service manuals
Type:
Service and Repair Manual
Language:
Likely English, potentially with other European languages depending on origin
Engine:
Disassembly, assembly, inspection, diagnosis, repair of all engine components and systems
Fuel System:
Fuel injection pump, injectors, fuel lines, filters, tank maintenance
Cooling System:
Radiator, water pump, thermostat, hoses, fan operation
Lubrication System:
Oil pump, oil filter, oil passages, lubrication intervals
Transmission And Drivetrain:
Gearbox, clutch, differential, PTO (Power Take-Off), final drives, axle repairs
Hydraulics:
Hydraulic pump, control valve, cylinders, hoses, filters, lift arm operation, external hydraulics
Electrical System:
Starter, alternator, battery, lighting, wiring diagrams, control units
Brakes:
Brake system diagnosis, repair, adjustments, hydraulic and mechanical components
Steering:
Steering mechanism, linkages, power steering system (if equipped)
Front Axle:
4WD front axle maintenance and repair (for 4WD models like 5945, 6945)
Operator Controls:
Dashboard layout, controls for PTO, hydraulics, transmission, and steering
Bodywork And Chassis:
Frame, fenders, operator platform, safety features
Routine Maintenance:
Oil changes, filter replacements, lubrication points, fluid level checks
Troubleshooting:
Diagnostic charts, symptom-based problem solving for all major systems
Major Repairs:
Engine rebuild, transmission overhaul, hydraulic system repairs, PTO replacement
Component Overhaul:
Detailed instructions for rebuilding specific components like injection pumps, alternators, water pumps
Torque Specifications:
Precise torque values for critical fasteners
Alignment And Adjustment:
Steering alignment, brake adjustments, clutch adjustments
Depth:
Comprehensive, covering all aspects from basic operator checks to complete unit overhauls and detailed diagnostics.
Engine Type:
Four-stroke, naturally aspirated, diesel engines
Engine Displacement:
Likely in the 2.5L to 3.5L range, typically 3-cylinder or 4-cylinder variants (e.g., Zetor 3320, 4701, 6201 engine families)
Engine Power Output:
Estimated 45-70 HP range, depending on specific model (e.g., 4911 ~45 HP, 6911 ~65 HP)
Engine Model Designation:
Likely Zetor-specific engine codes (e.g., Zetor 7201, 7701 variants)
Torque Curve Characteristics:
Designed for strong low-end torque suitable for agricultural applications
Fuel Injection System:
Direct injection, typically with a rotary or inline fuel injection pump (e.g., Bosch, Zetor)
Transmission Type:
Manual gearbox with constant mesh gears
Gear Configurations:
Likely 8-speed forward and 4-speed reverse (e.g., 2 ranges with 4 gears each), some models may have creeper gears or synchronized shifting.
Optional Features:
Some models may have optional hydraulic assist for PTO engagement or specific shuttle shift functionalities.
Clutch Type:
Dry, single-plate clutch for transmission, potentially a dual-stage clutch for PTO engagement.
Power Take Off Pto:
Live PTO or ground-speed PTO, typically 540 RPM and/or 1000 RPM. Dual speed PTO engagement is common.
Engine Oil Change:
Typically every 250-500 operating hours, depending on oil quality and operating conditions. Refer to manual for precise interval.
Oil Filter Replacement:
At every engine oil change.
Air Filter Service:
As required, depending on dust levels. Cleaning and/or replacement intervals are critical.
Fuel Filter Replacement:
Typically every 500-1000 operating hours or as specified.
Transmission Oil Change:
Usually every 1000-1500 operating hours. Crucial to maintain proper lubrication for longevity.
Engine Oil Grade:
Typically API CD or CE classification, SAE 15W-40 or 10W-30 depending on ambient temperature. Check manual for exact specs.
Engine Oil Capacity:
Approximately 7-9 liters, depending on engine variant. Verify in manual.
Hydraulic Fluid Type:
Tractor hydraulic fluid (THF) or UTF (Universal Tractor Transmission Fluid) meeting specific Zetor or industry standards (e.g., API GL-4 for transmission/hydraulics if shared).
Hydraulic Fluid Capacity:
Approximately 25-35 liters for the main hydraulic system. Check manual for precise capacity.
Coolant Type:
Ethylene glycol based antifreeze/coolant, typically a 50/50 mix with distilled water.
Common Wear Items:
Clutch wear, hydraulic pump or cylinder seal leaks, PTO clutch engagement issues, injector pump calibration drift, potential front axle wear on 4WD models with heavy use.
Electrical System Reliability:
Older wiring harnesses can degrade, leading to intermittent electrical issues; requires careful inspection and potential repair/replacement.
Overheating:
Can occur due to clogged radiator fins, faulty thermostat, or water pump issues. Regular cleaning and inspection are key.
Manufacturer Origin:
Zetor is a Czech Republic-based tractor manufacturer with a long history dating back to post-WWII.
Series Context:
These models belong to Zetor's UR II series (Universal Tractors), which were a significant evolution from earlier designs, often replacing or complementing models like the 5211, 6211, etc.
Production Period:
These models were primarily produced from the late 1980s through the 1990s, succeeding earlier Zetor generations.
Manufacturing Location:
Brno, Czechoslovakia (later Czech Republic)
