Kubota G1800 garden tractor specs and service data

The Kubota G1800 is a garden tractor model from the G series, manufactured from 1989 to 2000 by Kubota. It was available in two-wheel drive (2WD) version.

The Kubota G1800 is equipped with a 656 cc (40.0 cu·in) three-cylinder diesel engine with 64.0 mm (2.52 in) of the cylinder bore and 68.0 mm (2.68 in) of the piston stroke, and a hydrostatic transmission with infinite forward and reverse gears.

The Kubota G1800 garden tractor features:

The Kubota D662 diesel engine which produces 16.2 PS (11.9 KW; 16.0 HP) at 3,200 rpm of horsepower
Manual type (2WS or 4WS) steering
Internal expanding shoe type brakes
Open operator station
19.0 liters (5.0 US gal.; 4.2 Imp. gal) fuel tank

General specifications

General Specifications
Model	Kubota G1800
Tractor type	Garden tractor
Production years	1989-2000
Factory	–
Dimensions and weight
Length	1,865 mm (73.4 in)
Width	2WS: 960 mm (37.8 in) 4WS: 1,034 mm (40.7 in)
Height	1,110 mm (43.7 in)
Wheelbase	1,270 mm (50 in)
Ground clearance	2WS: 150 mm (5.9 in) 4WS: 105 mm (4.1 in)
Weight	2WS: 320 kg (705 lbs) 4WS: 340 kg (750 lbs)
Fuel capacity
Fuel tank capacity	19.0 liters (5.0 US gal.; 4.2 Imp. gal)

Engine

Engine
Engine model	Kubota D662 (Same as: D662-L)
Engine type	4-stroke, vertical, three-cylinders
Displacement	656 cm³, (40.0 cu·in)
Compression ratio:	23.0:1
Cylinder bore:	64.0 mm (2.52 in)
Piston stroke:	68.0 mm (2.68 in)
Gross horsepower	16.2 PS (11.9 KW; 16.0 HP) at 3,200 rpm
Max. torque	–
Emission type	–
Cooling system	Liquid-cooled
Lubricating system	Forced lubrication by pump
Combustion chamber	Spherical type (N-TVCS)
Fuel injection pump	Bosch MD type mini pump
Injection nozzle	Bosch throttle type (DN4PD62)
Fuel used	Diesel fuel No.2-D
Starting system	Electric starter (12V, 0.8 kW)
Starting support device	Glow plug in combustion chamber
Governor	Centrifugal ball mechanical governor
PTO shaft rotation	Counterclockwise (from PTO shaft side)
Dimensions (L x W X H)	426 x 398 x 519 mm (16.8 x 15.7 x 20.4 in)
Dry weight	73.7 kg (162.5 lbs)
Cylinder compression pressure
Cylinder compression:	29.0-33.0 kgf/cm² (2.84-3.24 MPa, 412-469 psi)
Compression differential limit between cylinders:	10% or less
Valve clearance
Intake valve clearance:	0.145-0.185 mm (0.0057-0.0073 in)
Exhaust valve clearance:	0.145-0.185 mm (0.0057-0.0073 in)
Oil system
Lubrication system:	Forced lubrication by pump
Oil type:	API CD or CE
Oil capacity:	3.0 liters (3.17 US.qts, 2.64 Imp. qts)
Oil filter:	Full flow paper filter (cartridge type)
Oil pressure:	At idle spped: 98 kPa (1.0 kgf/cm², 14 psi) At rated speed: 196-441 kPa (2.0-4.5 kgf/cm², 29-64 psi)
Fuel system
Fuel injection pump	Bosch MD-type mini pump
Injection nozzle	Bosch throttle type
Fuel injection pressure	13.73-14.71 MPa (140-150 kgf/cm2, 1991-2133 psi)
Cooling system
Type:	Pressurized radiator, forced circulation with water pump
Thermostat’s valve opening temperature:	69.5-72.5°C (157.1-162.5°F)
Temperature at which thermostat completely opens:	85°C (185°F)
Coolant capacity:	3.3 liters (3.49 US.qts, 2.9 Imp. qts)

Transmission and chassis

Chassis, steering and brakes
Chassis	2WD
Steering type	Manual type (2WS or 4WS)
Brakes	Internal expanding shoe type
Transmission
Transmission manufacturer or model
Transmission type	Hydrostatic
Gears	Infinite forward and reverse
Speed	Forward: 13.0 kmh (8.1 mph) Reverse: 6.0 kmh (3.7 mph)
Transmission oil capacity	5.7 L (1.5 US. gal, 1.3 Imp. gal.)

Tires

Tires
Front tires	Lawn/turf: 16×6.50-8
Rear tires	Lawn/turf: 23×10.50-12 (2WS), 23×8.50-12 (4WS)

Electrical system

Electrical system
Ground	Negative
Charging system	AC dynamo (12V, 150W)
Charging amps	–
Battery	12V, 45Ah

Attachments

Kubota RC48: 48″ mid-mount mower deck with three-blades
Cutting width	1,224 mm (48.0 in)
Cutting height	36-90 mm (1.4-3.5 in)
Number of blades	3
Kubota RC54: 54″ mid-mount mower deck with three-blades
Cutting width	1,370 mm (54.0 in)
Cutting height	38-102 mm (1.5-4.0 in)
Number of blades	3
Kubota TG2001: 48″ front-mount blade
Cutting width	1,224 mm (48.0 in)

Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

Kubota G1800