Gravely 8171
The Gravely 8171 is a tractor produced by Gravely Lawn Tractors. It is equipped with a 816 cc 49.8 ci engine. The rated power output is 16.5 hp 12.3 kW. Transmission: 8 forward and 4 reverse. Operating weight: 935 lbs 424 kg.
Engine Power
16.5 hp
12.3 kW
Fuel & Capacities
5.3 gal
20.1 L
Transmission
8 forward and 4 reverse
Operating Weight
935 lbs
424 kg
Gravely Lawn Tractors Gravely 8171 Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
 | 1978
8000 SeriesGarden tractor |
|---|---|
1978 | |
8000 Series | |
Garden tractor | |
Production | |
|---|---|
Manufacturer | Gravely |
Garden tractor | |
Gravely 8171 Engine | |
|---|---|
16.5HP Onan 816cc 2-cyl gasoline | |
Engine details ...  |
Gravely 8171 Transmission | |
|---|---|
8-speed gear | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Mechanical band brakes | |
Open operator station. |
Capacity | |
|---|---|
Fuel | 5.3 gal
20.1 L |
Hydraulic system | 0.375 gal
1.4 L |
Hydraulics | |
|---|---|
Type | open center |
Capacity | 0.375 gal
1.4 L |
Pressure | 1200 psi
82.7 bar |
Pump flow | 1.7 gpm
6.4 lpm |
Power Take-off (PTO) | |
|---|---|
Mid PTO | independent |
Clutch | mechanical |
Dimensions & Tires | |
|---|---|
Wheelbase | 48 inches
121 cm |
Weight | 935 lbs
424 kg |
Front tire | 16x7.50-8 |
Rear tire | 23x10.50-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | flywheel alternator |
Charging amps | 15 |
Battery volts | 12 |
Battery AH | 42 |
References | |
|---|---|
 | |
Commercial Ground Maintenance Tractors published in 1978, by Gravely |
Engine
Engine Detail — 816 cc / 49.8 ci Gasoline
Manufacturer | Onan CCKA |
Fuel Type | Gasoline |
Configuration | 2-cylinder, air-cooled horizontal-shaft opposed-twin |
Displacement | 816 cc
49.8 ci |
Bore/Stroke | 3.00x3.25 inches
76 x 83 mm |
Power (gross) | 16.5 hp
12.3 kW |
Starter | electric |
Starter volts | 12 |
Oil capacity | 2 qts
1.9 L |
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 directional control lever (forward/reverse). Reverse speeds are the same in high or low range. | |
 | |
Dimensions
Gravely 8171 Tires | |
|---|---|
Lawn/turf front | 16x7.50-8 |
Lawn/turf rear | 23x10.50-12 |
Dimensions | |
|---|---|
Wheelbase | 48 inches
121 cm |
Length | 75.5 inches
191 cm |
Width | 41.75 inches
106 cm |
Height | 43 inches
109 cm |
Shipping weight | 935 lbs
424 kg |
Ground clearance | 7 inches
17 cm |
Photos
Gravely 8171 Commercial, left side.
Gravely 8171 Commercial, front view.
Front-mount mower on the Gravely 8171.
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