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Home / Lawn and Garden Tractors / Kubota Lawn Tractors / Kubota G1800

Kubota G1800 Garden Tractor

The Kubota G1800 is a G-series garden tractor. This model was manufactured from 1989 to 2000. The G1800 driveline system components: Kubota D662 four-cycle vertical three cylinder diesel engine and shaft-driven hydrostatic transmission.

The max. forward speed - 8.1 mph (13 kph), a maximum reverse speed - 3.7 mph (6 kph). A 40.1 cu.in (0.66 L) engine output rating is 19.2 hp (14.3 kW) at 3800 rev/min. The compression ratio rating is 23:1. The Kubota G1800 garden tractor was equipped with 16x6.50-8 front tires and 23x8.50-12 rear tires.

The wheelbase is 50 inches (1270 mm). The tractor is compatible with the following attachments: a 48" mid-mount mower deck with cutting height of 1.4-3.5 in (35-80 mm), 54" mid-mount mower deck with cutting height of 1.5-4.0 in (38-102 mm), and 48" front blade.

Engine
Engine Model Kubota D662
Engine Type Vertical, three cylinder, 4-cycle diesel
Number of Cylinders 3
Displacement, cu in (L) 40.1 (0.656)
Engine Bore, in (mm) 2.52 (64.0)
Engine Stroke, in (mm) 2.68 (68.0)
Rated Engine Power, hp (kW) 17.3 (12.9)
Maximum Engine Power, hp (kW) 19.2 (14.3)
Rated Engine Speed, rpm 3800
Compression 23:1
Firing Order 1-2-3
Fuel Injection Pump Bosch MD type mini pump
Governor All speed mechanical governor
Direction of Rotation Counter-clockwise
Injection Nozzle Bosch Throttle type
Lubricating System Forced lubrication by trochoid pump
Injection Timing 20 (0.35) before T.D.C.
Injection pressure, MPa (psi) 13.73 (1991)
Fuel Tank Capacity, gal (L) 5.0 (19.0)
Engine oil capacity, qts (L) 3.3 (3.2)
Coolant capacity, qts (L) 3.2 (3.1)

Electrical System
Electrical System Rating, Volts 12
Starting System Electric Starting with Starter
Starting Motor 12V, 0.8 kW
Battery 12V, 36 AH equivalent
Charging Alternator 12V, 150 W

Transmission
Transmission Type Hydrostatic
Gears Infinite forward and reverse
Differential Lock Standard
Travel Speed Control One pedal (Forward/Reverse)
Service Brake Internal expanding shoe
Maximum Forward Speed, mph (kph) 8.1 (13.0)
Maximum Reverse Speed, mph (kph) 3.7 (6.0)

Wheels and Tires
Drive Wheels 2WD 4x2
Steering Configuration Front Steer
Front Steering Wheels (G1800) 2-Wheel Steer
Front Steering Wheels (G1800S) 4-Wheel Steer
Steering System Hydrostatic power
Front Tire Size (Turf) 16x6.5-8
Rear Tire Size (Turf) 23x8.5-12
Rear Tire Size (Turf) 23x10.5-12

Dimensions and Weight
Wheelbase, in (mm) 50 (1270)
Overall Length, in (mm) 73.4 (1860)
Overall Width, in (mm) 40.7 (1030)
Overall Height, in (mm) 45.7 (1160)
Weight (G1800), lbs (kg) 710 (320)
Weight (G1800S), lbs (kg) 750 (340)

48" Mower Deck
Mower Deck Model RC48
Mower Deck Type Mid-mount
Number of Blades 3
Cutting Width, in (mm) 48 (1220)
Cutting Height, in (mm) 1.4-3.5 (35-80)

54" Mower Deck
Mower Deck Model RC54
Mower Deck Type Mid-mount
Number of Blades 3
Cutting Width, in (mm) 54 (1370)
Cutting Height, in (mm) 1.5-4.0 (38-102)

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