Every washer, shim, and O-ring on your B26 is mapped across 299 pages of exploded views. Crankcase, cylinder head, HST assembly, front differential, hydraulic control valve: each illustration carries the OEM callout. The catalog covers engine internals, drivetrain, hydraulic pistons and lift arms, and chassis and ROPS components. Cross-reference the 0.2mm relief valve shim on page 181, or pull the 40A fuse callout from the panel board on page 91. Order the wrong part once and you lose a week to a restock fee. Identify it correctly the first time. Bookmarks jump from crankcase to canopy: tap an assembly, read the number, write it down.
What's Inside This Kubota B26 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Fuel Camshaft and Governor Shaft, Injection Pump, Governor, Speed Control Plate, Nozzle Holder and Glow Plug, Nozzle Holder, Fuel Pump, Air Cleaner, Accelerator Lever, Fuel Tank, Fuel Pipe, Fuel Filter, Stop Solenoid, Speed Control Pedal | |
| Cooling System | Water Flange and Thermostat, Water Pump, Fan, Water Pipe, Radiator, Reserve Tank | |
| Engine | Crankcase, Oil Pan, Cylinder Head, Gear Case, Oil Filter, Main Bearing Case, Camshaft and Idle Gear Shaft, Piston and Crankshaft, Flywheel, Valve and Rocker Arm, Inlet Manifold, Muffler, Upper Gasket Kit, Lower Gasket Kit, Differential Gear Case, Hydraulic Piston/Lift Arm | |
| Electrical System | Alternator, Starter, Battery, Switch, Panel Board, Head Light, Hazard Light, Tail Light, Working Light, Electrical Wiring | |
| Clutch & Transmission | Clutch Housing, Transmission Case, Clutch Shaft, Range Gear Shaft, PTO Counter Shaft, PTO Clutch Shaft, PTO Clutch, Bevel Gear Shaft/Range Gear, Range Gear Shift Fork, Differential Lock Shift Fork, Range Gear Shift Lever, PTO Gear Shift Lever | |
| PTO | PTO Valve, PTO Protector | |
| Rear Axle, Differential & Brakes | Rear Axle Case LH, Rear Axle Case RH, Rear Differential, Rear Axle, Differential Lock Pedal, Brake, Brake Rod, Parking Brake Lever, Brake Pedal | |
| Front Axle & Steering | Propeller Shaft, Front Wheel Drive Lever, Front Axle Frame, Front Axle Case, Front Differential, Differential Gear Shaft, Front Axle, Steering Handle, Steering Post, Steering Controller, Steering Linkage, Steering Cylinder | |
| Hydraulics & 3-Point Hitch | Position Control Lever, Hydraulic Pump, Hydraulic Oil Line, Hydraulic Cylinder, Feed Back Lever, Control Valve, Safety Valve, Hydraulic Outlet, Point Linkage | |
| Body & Operator Station | Head Cover, Center Frame, Oil Tank, Front Grille, Bonnet, Panel Cover, Side Cover, Shutter Plate, Fender, Floor Sheet, Seat Support | |
| Other Components | Dipstick and Guide, Idle Apparatus, HST, HST 1, HST 2, HST 3, HST 4, Reverse Shaft, Front Drive Shaft, Tilt Pedal, Lower Link, Check Chain, Hitch, Lever Guide LH, Lever Guide RH |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Shim Thickness | 0.2mm | p. 181 |
| Fuse Rating | 40A | p. 91 |
| Piston Oversize | 0.50mm | p. 19 |
| Shim Injection Pump Thickness | 0.300mm | p. 28 |
| Washer Adjusting Thickness | 0.20mm | p. 37 |
| Battery Type | 55B24L | p. 78 |
| Panel Board Lamp Wattage | 1.7W | p. 84 |
| Head Light Bulb Wattage | 35W | p. 86 |
| Fuse Amperage | 40A | p. 91 |
| Gear Teeth, Range Gear | 26T | p. 119 |
| Gear Teeth, Bevel Gear Shaft | 17T | p. 129 |
| Gear Teeth, Gear Bevel | 12T | p. 131 |
Kubota B26 Common Problems This Manual Covers
Kubota B26 fuel shutoff solenoid part number lookup for crank-no-start diagnosis p. 70
Open the Stop Solenoid exploded view on page 70 and match callout numbers against your unit. Cross-reference the solenoid body and the two terminal leads to your serial range before ordering. Verify the 40A main fuse on page 91 is the correct replacement, since a blown fuse mimics a dead solenoid.
Manual Section: Stop SolenoidNeed correct shim thickness and part number for the hydraulic relief valve in the safety valve assembly p. 181
Reference the Safety Valve diagram on page 181. Two adjusting shims are listed, 0.2mm and 0.3mm, stacked under the spring seat to set relief pressure. Count existing shims before ordering and pull both thicknesses so the original stack can be matched on reassembly. Component parts callouts continue on page 182.
Manual Section: Safety ValveHydraulic pump exploded view needed to identify drive gear, body, and seal kit part numbers p. 156
Start with the Hydraulic Pump assembly on page 156, then move to Hydraulic Pump Component Parts on page 157 for the internal gear set, shaft, and O-rings. Match callout numbers to the parts list before ordering individual seals, since the pump is sold both as a complete assembly and as serviceable internals.
Manual Section: Hydraulic PumpFuel filter element and inline fuel pipe fittings part numbers for routine service p. 61
Pull the Fuel Filter Component Parts callouts on page 61 for the bowl, element, and O-ring. Cross-reference the Fuel Pipe diagram on page 59 for banjo bolts, sealing washers, and hose clamps from tank to injection pump. Order the element with both copper washers, since washers are not reusable.
Manual Section: Fuel Filter [Component Parts]Seat safety switch and key switch part numbers needed when tractor refuses to crank p. 80
Check the Switch group on page 80 for key switch and safety interlock part callouts, then verify the seat-side wiring on the Electrical Wiring (Body) diagram starting page 91. The 40A main fuse and inline fuses are also listed on page 91, useful when the no-crank trace points to a blown supply leg rather than a switch.
Manual Section: SwitchHST internal parts identification for transmission engagement and drive response complaints p. 109
Begin with the HST assembly overview on page 109, then walk through Component Parts pages 111, 113, 115, and 117 to identify the swash plate, charge pump, and pistons. Match the suction line fittings to the Hydraulic Oil Line (HST) callouts on page 167 before ordering, since hose ends differ by serial range.
Manual Section: HSTFrequently Asked Questions
What are the replacement specifications for Fuel filter?
Fuel filter assembly is part number 6A320-58862. The filter element itself is 6A320-59930. The assembly also includes a cup (6A320-59920) and two O-rings (6A320-59940 and 6A320-59950).
What are the replacement specifications for Air filter?
Air cleaner assembly is 6C095-58200. The main filter element assembly is 6C060-99410, and the inner element is 32721-58242.
What battery type is specified for the Kubota B26?
The Kubota B26 specifies a 55B24L battery. The Battery section on page 78 of the parts catalog lists the battery assembly and terminal hardware with OEM part numbers.
What piston oversize is available for the Kubota B26 engine?
A 0.50mm oversize piston is listed on page 19 of the parts catalog, covering the Piston and Crankshaft assembly. Match the callout number to your engine serial range before ordering.
How will I receive this Kubota B26 Parts Manual?
Immediate download of the complete 299-page searchable Parts Manual. Open it on any device, laptop at your desk or phone in the field.
Can I print this manual?
Yes. No DRM or copy protection. Print the entire manual or only the pages you need on any home or office printer.
Are hydraulic system diagrams in this Kubota B26 Parts Manual?
This is a parts catalog. It includes detailed exploded-view diagrams for all hydraulic components, including control valve, pistons, and lift arms, with OEM part numbers for each assembly. It does not contain hydraulic circuit schematics, pressure specs, or flow diagrams; those are in the B26 workshop/service manual.
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