Target User:
Owner-operators, farm managers, agricultural mechanics, and service technicians working on Kubota L2650GST tractors.
Value Proposition:
Provides essential, factory-approved repair and maintenance information, enabling cost-effective ownership and reducing reliance on external service. Crucial for maintaining resale value and operational efficiency.
Diagnostic Capability:
Detailed troubleshooting sections and wiring diagrams facilitate accurate fault diagnosis.
Repair Accuracy:
Includes precise specifications, torque values, and procedural steps for correct repairs.
Component Identification:
Component diagrams and part references aid in identification and ordering.
Engine Mechanical:
Engine assembly, disassembly, overhaul, cylinder head, piston and rod assembly, crankshaft, camshaft, valve train, lubrication system, cooling system, fuel system (injection pump, injectors), intake and exhaust systems.
Transmission Gst:
Detailed breakdown and assembly of the Glide Shift Transmission (GST), including control mechanisms, hydraulic pump, planetary gears, clutches, and troubleshooting specific to the GST system.
Hydraulic Power Lift:
Operation, maintenance, troubleshooting, and repair of the hydraulic lift system, including pump, cylinder, control valve, and associated lines and components.
Steering System:
Service procedures for the power steering system, including steering cylinder, control valve, pump, and linkages.
Braking System:
Maintenance and repair of the wet disc brake system, including adjustment, component replacement, and bleeding procedures.
Electrical System And Diagnostics:
Complete wiring diagrams, component identification, troubleshooting for starting and charging systems, lighting, indicators, and PTO engagement.
Pto System:
Service and repair of the rear Power Take-Off (PTO) system, including engagement mechanism and driveshaft.
Scheduled Maintenance:
Detailed instructions for all scheduled maintenance tasks, including oil changes, filter replacements, lubrication points, and safety checks.
Engine Overhaul:
Step-by-step procedures for complete engine rebuilds, including torque specifications, clearances, and component wear limits.
Transmission Overhaul:
Comprehensive instructions for the disassembly, inspection, repair, and reassembly of the GST transmission, including special tool usage.
Hydraulic System Diagnosis:
Methods for diagnosing hydraulic pressure issues, leaks, and control problems.
Electrical Troubleshooting:
Systematic approach to diagnosing electrical faults using wiring diagrams and multimeter readings.
Component Replacement:
Detailed guides for replacing major components such as the starter, alternator, fuel pump, water pump, clutch, and brake assemblies.
Troubleshooting Charts:
Diagnostic flowcharts for common operational problems.
Depth:
Full workshop level, covering both routine maintenance and complex component overhauls. Suitable for professional mechanics and experienced DIY users.
Engine Model:
Kubota D1703-M (likely, but may vary slightly based on specific build)
Engine Type:
3-Cylinder, Diesel, Water-Cooled
Displacement:
1.686 Liters (102.8 cu. in.)
Rated Hp:
Approx. 26 PTO HP / 23 Engine HP
Bore X Stroke:
87 mm x 92 mm (3.43 in x 3.62 in)
Compression Ratio:
Typically 18.2:1
Injection System:
Indirect Injection (IDI) with Direct Injection Fuel Pump (e.g., Bosch VE or similar)
Fuel Filter Part Number:
Typically Kubota P/N 15221-43080 or equivalent (verify with specific serial number)
Fuel Capacity:
Approx. 30 Liters (7.9 US Gallons)
Type:
GST (Glide Shift Transmission) - Hydrostatic Power Split Transmission with synchronized mechanical gears.
Gear Options:
The L2650GST features a unique transmission that combines hydrostatic drive for infinite speed control with selectable mechanical gear ranges for efficiency.
Transmission Fluid Type:
Kubota UDT (Universal Tractor Transmission Fluid) or equivalent API GL-4 SAE 80W-90 gear oil for range gearbox.
Transmission Fluid Capacity:
Approx. 27 Liters (7.1 US Gallons) - UDT
Pto Type:
Live PTO, 540 RPM standard (potential for 540/1000 RPM depending on configuration).
Overall Length:
Approx. 3,155 mm (124.2 in)
Overall Width:
Approx. 1,470 mm (57.9 in)
Overall Height:
Approx. 2,050 mm (80.7 in) to top of ROPS
Operating Weight:
Approx. 1,300 kg (2,866 lbs)
Wheelbase:
Approx. 1,740 mm (68.5 in)
Engine Oil Change:
Every 100 hours or annually, whichever comes first.
Transmission Fluid Change:
Every 200 hours or annually.
Air Filter Replacement:
As needed, typically every 250 hours or when restriction indicator illuminates.
Fuel Filter Replacement:
Every 200 hours or annually.
Engine Oil Type:
Kubota Super UDT or API CD/CF SAE 15W-40 (Verify manual for specific recommendation).
Engine Oil Capacity:
Approx. 6.5 Liters (6.9 US Quarts)
Coolant Type:
Ethylene Glycol based antifreeze (50/50 mix with distilled water).
Coolant Capacity:
Approx. 5.5 Liters (5.8 US Quarts)
Gst Transmission Care:
Proper fluid maintenance is critical for the longevity of the GST system; incorrect fluid can lead to damage.
Injector Maintenance:
Regular fuel filter changes help prevent injector fouling.
Electrical Connections:
Corrosion or loose connections can cause intermittent electrical issues, especially in damp environments.
