Product Positioning:
Essential technical documentation for owners and mechanics of Kubota STa-30 and STa-35 tractors, bridging factory information with practical repair guidance.
Value Proposition:
Provides comprehensive, factory-level repair information in an accessible digital format, enabling cost-effective maintenance and repair compared to dealership services.
Manual Benefits:
Empowers users with step-by-step procedures, critical specifications, and troubleshooting advice to confidently perform repairs and maintenance.
User Skill Level:
Assumes basic electrical and mechanical knowledge; advises caution for complex repairs without prior experience.
Primary Coverage:
Service and Repair
Secondary Coverage:
Maintenance, Troubleshooting, Diagnostics, Overhauling
Estimated Page Count:
Variable (typically 300-600 pages for comprehensive service manuals)
Manual Type:
Service Repair Manual / Workshop Manual
Delivery Method:
Instant Download
Software Requirements:
Adobe PDF Reader, WinZip or equivalent unzip utility
Operating System Compatibility:
All Versions of Windows & Mac
Engine Systems:
Engine mechanical, fuel system, cooling system, lubrication system, intake and exhaust systems, starting and charging systems, engine management systems
Drivetrain Systems:
Transmission (HST, gear), clutch, PTO, differentials, axles, drive shafts
Hydraulic Systems:
Hydraulic pump, cylinders, control valves, hydraulic fluid system, implement control
Electrical Systems:
Wiring diagrams, lighting, instrumentation, starting and charging, electrical component testing, troubleshooting
Chassis And Body:
Frame, steering system, braking system, suspension (if applicable), operator station, body panels, hitches
Maintenance Procedures:
Scheduled maintenance, fluid checks and changes, filter replacements, greasing, inspection points
Repair Procedures:
Step-by-step disassembly, assembly, and repair instructions for all major components and systems
Troubleshooting Guidance:
Diagnostic flowcharts, symptom analysis, common problems and solutions
Technical Data And Specifications:
Tightening torques, clearances, fluid capacities, component measurements, electrical resistance values
Depth Of Coverage:
Comprehensive (covering routine maintenance to major overhauls and component rebuilds)
Intended Users:
Professional Technicians and Experienced DIY Mechanics
Engine Displacement Sta30:
Likely in the 1.0L to 1.5L range (specifics dependent on exact engine code, e.g., D782, D902, or similar Kubota compact diesel engines)
Engine Displacement Sta35:
Likely in the 1.0L to 1.5L range (specifics dependent on exact engine code)
Horsepower Rating Sta30:
Likely in the 25-30 PTO HP range (specifics depend on engine variant)
Horsepower Rating Sta35:
Likely in the 30-35 PTO HP range (specifics depend on engine variant)
Injection System:
Direct Injection (likely common rail or indirect injection depending on specific engine model and emission standards)
Cooling Method:
Liquid-cooled
Oil Type Recommendation:
Kubota specifies specific diesel engine oil grades (e.g., SAE 10W-30 or 15W-40 API CG-4 or higher). Refer to manual for exact specification.
Primary Transmission:
Hydrostatic Transmission (HST)
Optional Transmission:
Potentially a Manual or Synchronized Transmission option depending on market and specific configuration.
Hydraulic Fluid Specification:
Kubota UDT (Universal Tractor Transmission Oil) or equivalent ISO VG 32 hydraulic fluid. Refer to manual for exact specification and type.
Drive System:
4WD (Four-Wheel Drive)
Overall Length:
Variable by configuration, typically around 100-120 inches (2500-3000 mm)
Overall Width:
Variable by configuration, typically around 45-55 inches (1150-1400 mm)
Wheelbase:
Variable by configuration, typically around 60-70 inches (1500-1780 mm)
Operating Weight:
Typically in the 2000-2500 lbs (900-1135 kg) range, without implements
Tow Capacity:
Typically rated for light to medium-duty towing, specific limits in manual.
Operator Interface:
Basic instrument cluster with essential indicators (engine temperature, oil pressure, fuel level, RPM, hour meter), hazard lights, PTO engagement indicator.
Operator Controls:
Mechanical lever for HST speed control (forward/reverse), mechanical linkage for 3-point hitch and auxiliary hydraulics.
Power Take Off Pto:
Independent PTO, typically 540 RPM rear PTO. Mid-PTO may be an option.
Engine Oil Change Interval:
Typically every 100-200 operating hours or annually, whichever comes first. Refer to manual for exact hours and oil specification.
Hydraulic Fluid Change Interval:
Typically every 200-400 operating hours or bi-annually. Refer to manual for exact hours and fluid specification.
Air Filter Replacement:
Check regularly, replace as needed or per operating hour schedule (e.g., 200-400 hours).
Engine Coolant Type:
Kubota Super UDT or equivalent ethylene glycol-based antifreeze/coolant. Mixture ratio 50/50 with distilled water.
Transmission Hydraulic Fluid Capacity:
Approximately 6-8 gallons (23-30 liters) for HST models, check manual for exact capacity.
Common Wear Items:
HST hydraulic filters, hydrostatic drive fluid degradation, PTO clutch wear, linkage wear points, operator seat wear.
Potential Electrical Issues:
Corrosion on connectors in wet environments, battery terminal issues, fuse box degradation over time.
Manufacturer:
Kubota Corporation, Japan
Brand Focus:
Renowned for manufacturing reliable and durable compact and sub-compact tractors, construction equipment, and engines.
Series Purpose:
The STa series is designed for general property maintenance, landscaping, property owners, and light agricultural tasks.
