Part of the Kubota Parts Manuals.
Every figure in this 323-page Kubota B7400HSD catalog points at one thing: the correct factory part number, identified before you call the dealer. Exploded-view diagrams sit next to numbered parts lists for every system on the tractor, from crankcase and piston-crankshaft assemblies through the HST unit, front and rear differentials, hydraulic cylinder, and three-point linkage hardware. Exploded parts views map the suction and delivery oil lines, HST plumbing, and oil cooler circuit, with control valve component parts broken out in their own section. Check your filter specs first: the hydraulic oil filter lists at 0.39 kgf (0.858 lb), the engine oil filter at 0.195 kgf. Bookmarks let you jump straight to the system you need, and the PDF opens just as well on a phone or tablet in the shop as on a desktop.
What's Inside This Kubota B7400HSD Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Fuel Camshaft and Governor Shaft, Engine Stop Lever, 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, Oil Pump, Main Bearing Case, Camshaft and Idle Gear Shaft, Piston and Crankshaft, Flywheel, Valve and Rocker Arm, Inlet Manifold, Exhaust Manifold, Upper Gasket Kit, Lower Gasket Kit, Piston Kit | |
| Electrical System | Dynamo and Pulley, Dynamo, Starter, Battery, Switch, Panel Board, Head Light, Hazard Light, Tail Light, Electrical Wiring, Warking Light Kit | |
| Clutch & Transmission | Clutch, Clutch Rod, Clutch Pedal, Clutch Housing, Clutch Dipstick and Guide, Transmission Case, Clutch Shaft, Range Gear Shift Fork, PTO Gear Shift Fork, Differential Lock Shift Fork, Range Gear Shift Lever, PTO Gear Shift Lever | |
| PTO | PTO Shaft, Mid PTO, PTO Protector | |
| Rear Axle, Differential & Brakes | Rear Axle Case, Rear Differential, Rear Axle, Brake, Brake Rod 1, Parking Brake Lever, Brake Pedal, Differential Lock Pedal, Rear Wheel | |
| Front Axle & Steering | Propeller Shaft, Front Wheel Propeller Shaft, Front Wheel Drive Lever, Front Axle Case, Front Differential, Differential Gear Shaft, Front Axle, Tie Rod, Steering Handle, Steering Controller, Front Wheel | |
| Hydraulics & 3-Point Hitch | Hydraulic Pump, Hydraulic Control Lever, Hydraulic Oil Line, Hydraulic Cylinder, Feed Back Lever, Control Valve, Point Linkage 2, Point Linkage 1, Drawbar | |
| Body & Operator Station | Head Cover, Front Frame, Center Frame, Front Grille, Bonnet, Panel Cover, Side Cover, Shutter Plate, Fender, Fender Stay, Floor Seat, Seat Support, Step, ROPS, ROPS Kit | |
| Decals & Accessories | Label, Accessories and Service Parts | |
| Other Components | Dipstick and Guide, HST, Front Shaft, Nd Shaft, Rd Shaft, Th Shaft, Speed Set Lever, Neutral Holder Link, Front Drive Shaft, Knuckle Arm, Drag Link, Universal Joint, Lower Link, Check Chain, Hitch, Lever Guide |
Every system also includes a figure, a parts list, and interchangeability symbols legend.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic oil filter weight | 0.39 kgf | p. 229 |
| Engine oil filter weight | 0.195 kgf | p. 17 |
| Air filter element weight (ASSY ELEMENT) | 0.24 kgf | p. 75 |
| Air filter element weight (ELEMENT INNER) | 0.2 kgf | p. 75 |
| Fuel filter weight (ASSY FILTER FUEL) | 0.09 kgf | p. 86 |
| Fuel filter weight (FILTER) | 0.025 kgf | p. 86 |
| V BELT weight | 0 kgf | p. 88 |
| Battery weight (ASSY BATTERY) | 0 kgf | p. 106 |
| Hose water weight (6C090-58630) | 0.09 kgf | p. 90 |
| Hose water weight (6C090-58570) | 0.14 kgf | p. 90 |
| Clearance (SHIM INJECTION PUMP 16006-52092) | 0.20mm | p. 37 |
| Clearance (SHIM INJECTION PUMP 16006-52112) | 0.25mm | p. 37 |
Kubota B7400HSD Common Problems This Manual Covers
Kubota B7400HSD HST needs rebuild, can't match internal component part numbers to exploded diagram
Open the HST [Component Parts] exploded view on page 147. Each internal part has its own line-item callout; match the callout number to the parts list running through page 149. Adjusting collars come in five tolerance grades (1.5+0.015mm to +0.155mm per page 148), so identify the correct grade before ordering. Confirm part numbers against your serial number range before placing the order.
Manual Section: HST [Component Parts] [Hst Type] p. 147Hydraulic suction filter replacement due, aftermarket listings show two part numbers for the same position
Turn to the Hydraulic Oil Line (Suction) diagram on page 228. The suction filter assembly is listed as a separate line item in the parts table on page 229 (listed weight 0.39 kgf). Pull the exact part number from the exploded view callout. Aftermarket cross-references often include superseded numbers; the catalog callout is authoritative for your serial range.
Manual Section: Hydraulic Oil Line(Suction) p. 228Air filter service due, outer and inner element part numbers look interchangeable but aren't
Check the Air Cleaner parts list on page 74. The outer element (ASSY ELEMENT, 0.24 kgf) and the inner safety element (ELEMENT INNER, 0.20 kgf) carry distinct part numbers as separate line items, so order both by their own callout numbers rather than assuming one covers the other.
Manual Section: Air Cleaner p. 74Need seal kit part numbers for hydraulic lift cylinder, 3-point hitch drops under load
Locate the Hydraulic Cylinder exploded view on page 237. Seal components are listed individually in the parts table; find each by its callout number and record the exact part number for every seal and O-ring in the assembly. If the control valve is also suspect, cross-reference the Control Valve [Component Parts] on page 245, which lists internal valve seals as separate line items.
Manual Section: Hydraulic Cylinder p. 237Fuel filter replacement due, three separate listings for bowl, element, and complete assembly confusing
Go to the Fuel Filter [Component Parts] section on page 85. The complete assembly (ASSY FILTER FUEL, 0.09 kgf per page 86) and the bare filter element (FILTER, 0.025 kgf) appear as distinct line items with separate part numbers. Order the assembly part number when replacing the full unit; order only the element part number when swapping media inside an existing bowl.
Manual Section: Fuel Filter [Component Parts] p. 85Starter motor rebuild needed, internal brush and spring part numbers not visible on main diagram
Pull up the Starter [Component Parts] exploded view on page 103. Every internal piece including brushes, springs, bearings, and the drive pinion carries its own part number in the table on page 104. The complete starter assembly (3.6 kgf per page 102) is also listed if a full exchange is simpler. Record each callout number from the diagram before ordering to avoid receiving the wrong sub-assembly.
Manual Section: Starter [Component Parts] p. 103Frequently Asked Questions
What are the replacement specifications for hydraulic oil filter?
The hydraulic oil filter for the Kubota B7400HSD is a CARTRIDGE OIL FILTER with Part No. 66021-36060. It has a weight of 0.34 kgf (0.748 lb). p. 233
What are the replacement specifications for engine oil filter?
Kubota lists the B7400HSD engine oil filter as a CARTRIDGE OIL FILTER, Part No. 15853-32430, weighing 0.195 kgf (0.429 lb). p. 17
How will I receive this Kubota B7400HSD Parts Catalog?
A 323-page Parts Catalog in searchable PDF format, available the moment you complete checkout. Open it on a computer, tablet, or phone. No shipping wait.
Am I able to print pages from this manual?
The PDF is DRM-free, so print whatever sections you need for the shop. Standard letter or A4 paper works.
Does this Kubota B7400HSD catalog cover hydraulic system parts?
Yes. It includes exploded parts views and part numbers for the hydraulic groups and components, suction and delivery oil lines, HST plumbing, oil cooler circuit, and control valves, so you can find and order replacements. It's a parts breakdown, not a hydraulic circuit drawing.
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