Finding the exact part number before you waste half a day on the wrong component: that is what these 193 pages are built for. The Kubota G1800 Parts Catalog sorts everything across engine, drivetrain, chassis, hydraulic, and electrical systems. Indexed parts lists cover piston ring assemblies, injection pump plunger kits, nozzle holder component parts, and camshaft tappets. The drivetrain section breaks down HST internals, rear PTO components, cruise control linkage, and rear axle differentials for 2WS configurations. Planning a cylinder head swap by serial number? The catalog flags S.No. >=489916 assemblies at 7.35 kgf and splits injection pump shim thickness at 0.15MM for S.No. <=489915. When your machine is down and the dealer is a week out, pull this up on a tablet, hit a bookmark, and call the supplier with a number in hand.
What's Inside This Kubota G1800 Parts Manual
| System | Pages |
|---|---|
| Crankcase | - |
| Oil Pan | - |
| Piston/Crankshaft | - |
| Main Bearing Case | - |
| Flywheel | - |
| Cylinder Head | - |
| Valve/Rocker Arm | - |
| Nozzle Holder/Glow Plug | - |
| Nozzle Holder [Component Parts] | - |
| Head Cover | - |
| Inlet Manifold | - |
| Exhaust Manifold | - |
| Camshaft | - |
| Gear Case | - |
| Water Pump | - |
| Water Flange/Thermostat | - |
| Injection Pump | - |
| Injection Pump [Component Parts] | - |
| Speed Control Plate | - |
| Governor | - |
| Stop Solenoid | - |
| Upper Gasket Kit | - |
| Lower Gasket Kit | - |
| Air Cleaner | - |
| Muffler | - |
| Accelerator Lever | - |
| Fuel Tank | - |
| Fuel Pipe | - |
| Radiator | - |
| Dynamo | - |
| Dynamo [Component Parts] | - |
| Starter [Component Parts] | - |
| Battery | - |
| Light | - |
| Dashboard | - |
| Wire Harness | - |
| Transmission Case | - |
| Universal Joint/HST Fan | - |
| Rear PTO | - |
| Rear PTO [Component Parts] | - |
| Cruise Control Plate | - |
| Cruise Control Lever | - |
| Speed Control Pedal | - |
| Rear Axle Case | - |
| Rear Axle [2Ws] | - |
| Rear Wheel (23 X 10.5-12) [2Ws] | - |
| PTO Brake | - |
| Brake Shaft | - |
| Brake | - |
| Brake Rod | - |
| Brake Pedal | - |
| Front Axle/Knuckle Arm | - |
| Front Wheel (16 X 6.50-8) | - |
| Frame | - |
| Steering Gear Case | - |
| Steering Wheel | - |
| Control Valve | - |
| Control Valve [Component Parts] | - |
| Hydraulic Pipe 1 | - |
| Hydraulic Pipe 2 | - |
| Lift Cylinder | - |
| Hydraulic Outlet [Old Type] [Option] | - |
| Hydraulic Outlet [New Type] [Option] | - |
| Point Linkage [Option] | - |
| Mower Assist Spring [Option] | - |
| Mower Swing Stopper [Option] | - |
| Hood (Bonnet) | - |
| Panel | - |
| Fender | - |
| Seat [a] [Ca] | - |
| Seat [Au] [Nz] | - |
| Label | - |
| Accessories and Service Parts | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Crankcase Assembly Weight | 22.8 kgf | p. 6 |
| Cylinder Head Assembly Weight (S.No. >=489916) | 7.35 kgf | p. 18 |
| Injection Pump Shim Thickness (S.No. <=489915) | 0.15MM | p. 42 |
| Radiator Assembly Weight | 5.5 kgf | p. 70 |
| Battery Assembly Weight ([A] [CA], S.No. <=13282) | 9.3 kgf | p. 83 |
| HST Assembly Weight (S.No. >=13839) | 12 kgf | p. 96 |
| Rear Differential Assembly Weight | 4.5 kgf | p. 126 |
| Rear Axle Weight (2WS, S.No. >=14614) | 3 kgf | p. 130 |
| Front Axle Assembly Weight | 6 kgf | p. 144 |
| Frame Assembly Weight (S.No. >=16460) | 52 kgf | p. 151 |
Kubota G1800 Common Problems This Manual Covers
Kubota G1800 drive shaft part number lookup for driveline replacement or rebuild p. 99
Open the Universal Joint and HST Fan exploded view starting on page 99. Locate the drive shaft assembly and cross-shaft components in the parts list. Verify your serial number range before ordering: the transmission case overview on page 93 shows how the driveline components relate to the HST (assembly weight 12 kgf for S.No. >=13839, per page 96). Record every part number from the exploded view before calling your dealer.
Manual Section: Universal Joint/HST FanHST hydrostatic transmission parts identification for fluid-related wear or component swap p. 93
Find the Transmission Case diagram on page 93, then cross into the HST component section starting there. The HST assembly weighs 12 kgf (S.No. >=13839). Identify each internal component by callout number in the exploded view and match it to the parts list. Cross-reference serial number cutoffs carefully: G1800 HST builds changed at S.No. 13839, so ordering without verifying the serial break will get you the wrong assembly.
Manual Section: Transmission CaseRadiator assembly part number identification for cooling system replacement on older units p. 68
Turn to page 68 for the Radiator exploded view and parts number list (pages 68-70). The complete radiator assembly weighs 5.5 kgf (page 70). Note the full assembly part number from the parts list, then check whether you need the assembly or individual sub-components such as hoses or the water flange. The Water Flange and Thermostat parts are listed separately on pages 38-40 if only upper cooling components need replacement.
Manual Section: RadiatorCruise control handle or linkage part number missing after wear or previous removal p. 119
The Cruise Control Lever parts list is on pages 119-121; the Cruise Control Plate (bracket and hardware) is on pages 117-118. Find the handle assembly callout in the exploded view on page 119 and write down the exact part number. If the linkage rod or pin is also gone, the Speed Control Pedal section on pages 122-124 covers connected pedal-side hardware that often gets disturbed at the same time.
Manual Section: Cruise Control LeverEngine won't turn over or starts hard in cold weather, need starter or battery part numbers p. 81
Battery part numbers are listed on pages 81-83; note the serial-number split: S.No. <=13282 uses a 9.3 kgf battery assembly ([A][CA] markets). Starter component parts are on pages 77-80. Identify which sub-components you need (brushes, drive gear, solenoid) from the exploded view. If the issue is electrical rather than mechanical, check the Wire Harness section on pages 90-92 for connector and harness part numbers before ordering.
Manual Section: BatteryDeck gearbox or rear PTO parts identification for noise or oil leak repair p. 110
Rear PTO parts are listed on pages 110-112, with component-level detail on pages 113-116. Locate the gearbox housing, seal, and bearing callouts in the exploded view and note each part number separately: seals and bearings are listed individually and not bundled in a kit on this diagram. If the PTO brake is also suspect, the PTO Brake section starts on page 133.
Manual Section: Rear PTOFrequently Asked Questions
What are the replacement specifications for drive shaft?
The manual lists the SHAFT DRIVE (Part No. 79840-22150) for serial numbers less than or equal to 13508 with a weight of 0.29 kgf (0.638 lb). For serial numbers greater than or equal to 13509, the SHAFT DRIVE (Part No. 79840-22154) has a weight of 0.37 kgf (0.814 lb).
What are the replacement specifications for radiator?
The ASSY RADIATOR (Part No. 16861-72060) weighs 5.5 kgf (12.1 lb), listed in the RADIATOR section of the manual.
What is the weight and serial cutoff for the G1800 HST hydrostatic transmission assembly?
The HST hydrostatic transmission assembly weighs 12 kgf for serial numbers >=13839. Find the Transmission Case diagram on page 93 and cross into the HST component section for internal components. The G1800 HST builds changed at S.No. 13839, so always verify the serial break before ordering parts.
Where are the cruise control handle and linkage part numbers in the G1800 Parts Catalog?
Cruise control lever parts are listed on pages 119-121. The Cruise Control Plate (bracket and hardware) is covered on pages 117-118. If the linkage rod or pin is also worn, the Speed Control Pedal section on pages 122-124 covers the connected pedal-side hardware.
How will I receive this Kubota G1800 Parts Manual?
Instant PDF download. The full 193-page searchable Parts Manual lands in your account right after payment. Open it on a laptop, tablet, or phone in the shop.
Can I print this manual?
Yes. The PDF has no DRM restrictions, so you can print any page or section you need for your shop. Works with any standard printer.
Reviews
There are no reviews yet.