Gravely 8161
The Gravely 8161 is a tractor produced by Gravely Lawn Tractors. It is equipped with a 531 cc 32.4 ci engine. The listed engine power is Gasoline (gross): 16 hp / 11.9 kW. Transmission: 8 forward and 4 reverse. Operating weight: 870 lbs 394 kg.
Engine Power
Gasoline (gross): 16 hp / 11.9 kW
Fuel & Capacities
5.3 gal
20.1 L
Transmission
8 forward and 4 reverse
Operating Weight
870 lbs
394 kg
Overview
 | 1978
8000 SeriesGarden tractor
8000 Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Gravely |
Garden tractor | |
Variants | |
|---|---|
8160 | mechanical lift |
8161 | hydraulic lift |
Gravely 8161 Engine | |
|---|---|
16HP Briggs & Stratton 531cc 1-cyl gasoline | |
Engine details ...  |
Gravely 8161 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 | 870 lbs
394 kg |
Front tire | 16x7.50-8 |
Rear tire | 23x10.50-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | flywheel alternator |
Charging amps | 3 |
Battery volts | 12 |
Battery AH | 42 |
References | |
|---|---|
 | |
Commercial Ground Maintenance Tractors published in 1978, by Gravely |
Engine
Engine Detail — 531 cc / 32.4 ci Gasoline
Manufacturer | Briggs & Stratton 326437 |
Fuel Type | Gasoline |
Configuration | 1-cylinder, air-cooled horizontal-shaft |
Displacement | 531 cc
32.4 ci |
Bore/Stroke | 3.25x3.56 inches
83 x 90 mm |
Power (gross) | 16 hp
11.9 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 8161 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 | 36.375 inches
92 cm |
Height | 43 inches
109 cm |
Shipping weight | 870 lbs
394 kg |
Ground clearance | 7 inches
17 cm |
Photos
Gravely 8161 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Gravely Lawn Tractors Gravely 8161 based on its 16 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 4 ft (48 in)1.2 m | Light Duty | Pasture clipping and light brush under 1" diameter. |
Rotary TillerSeedbed Prep | 42 to 48 in105 - 120 cm | Light Duty | Covers compact tractor tire width. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Gravely Lawn Tractors Gravely 8161.
Estimated Continuous Field Runtime: 6.4 hrs
Approximately 6.4 hours of continuous field operation at ~75% rated power on a full tank (5.3 gal / 20.1 L).
Estimated 75% Load Fuel Burn~0.8 gal/hr (3.1 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 8161 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Gravely Lawn Tractors Gravely 8161.
Converted Equivalents:
Horsepower (HP)16 hp
Kilowatts (kW)11.9 kW
Metric Horsepower (PS / CV)16.2 PS
Direct Competitor Comparison
Compare Gravely 8161 against same-era industry alternatives in the same horsepower class.
Current Model
Gravely Lawn Tractors
Gravely 8161
Engine Power:Gasoline (gross): 16 hp / 11.9 kW
★ Baseline Reference
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