Gravely 8128
The Gravely 8128 is a tractor produced by Gravely Lawn Tractors. It is equipped with a 476 cc 29.07 ci engine. The listed engine power is Gasoline (listed): 12 hp / 8.9 kW. Transmission: 8 forward and 4 reverse. Operating weight: 890 lbs 403 kg.
Engine Power
Gasoline (listed): 12 hp / 8.9 kW
Fuel & Capacities
5.3 gal
20.1 L
Transmission
8 forward and 4 reverse
Operating Weight
890 lbs
403 kg
Overview
 | 1980
8000 SeriesGarden tractor
8000 Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Gravely |
Garden tractor | |
Variants | |
|---|---|
8128 | mechanical lift |
8129 | hydraulic lift |
Gravely 8128 Engine | |
|---|---|
12HP Kohler 476cc 1-cyl gasoline | |
Fuel tank | 5.3 gal
20.1 L |
Engine details ...  | |
Gravely 8128 Transmission | |
|---|---|
8-speed gear | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Mechanical band brakes | |
Open operator station. |
Power Take-off (PTO) | |
|---|---|
Mid PTO | independent |
Clutch | mechanical |
Mid PTO Type | 1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 52 inches
132 cm |
Weight | 890 lbs
403 kg |
Front tire | 16x6.50-8 |
Rear tire | 23x8.50-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Battery AH | 42 |
References | |
|---|---|
 | |
Grounds Maintenance Tractors published in 1980, by Gravely |
Engine
Engine Detail — 476 cc / 29.07 ci Gasoline
Manufacturer | Kohler K301 |
Fuel Type | Gasoline |
Configuration | 1-cylinder, air-cooled horizontal-shaft |
Displacement | 476 cc
29.07 ci |
Bore/Stroke | 3.375x3.25 inches
86 x 83 mm |
Power | 12 hp
8.9 kW |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — 8 forward and 4 reverse shaft-driven gear
Type | shaft-driven gear |
Gears | 8 forward and 4 reverse |
Four gears (1-4) in two ranges (low-high) with forward/reverse clutches. The directional clutch must be in neutral to shift gears or ranges. | |
 | |
Dimensions
Gravely 8128 Tires | |
|---|---|
Lawn/turf front | 16x6.50-8 |
Lawn/turf rear | 23x8.50-12 |
Dimensions | |
|---|---|
Wheelbase | 52 inches
132 cm |
Length | 79.5 inches
201 cm |
Width | 36.4 inches
92 cm |
Height | 43 inches
109 cm |
Shipping weight | 890 lbs
403 kg |
Ground clearance | 7 inches
17 cm |
Photos
Gravely 8128
Gravely 8128
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Gravely Lawn Tractors Gravely 8128.
Estimated Continuous Field Runtime: 8.5 hrs
Approximately 8.5 hours of continuous field operation at ~75% rated power on a full tank (5.3 gal / 20.1 L).
Estimated 75% Load Fuel Burn~0.6 gal/hr (2.4 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Gravely Lawn Tractors Gravely 8128 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Gravely Lawn Tractors Gravely 8128.
Converted Equivalents:
Horsepower (HP)12 hp
Kilowatts (kW)8.9 kW
Metric Horsepower (PS / CV)12.2 PS
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