Gravely 816S
The Gravely 816S 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 (listed): 16 hp / 11.9 kW. Transmission: 8 forward and 4 reverse. Operating weight: 900 lbs 408 kg.
Engine Power
Gasoline (listed): 16 hp / 11.9 kW
Fuel & Capacities
5.3 gal
20.1 L
Transmission
8 forward and 4 reverse
Operating Weight
900 lbs
408 kg
Overview
 | 1974 - 1978
800 SeriesGarden tractor
800 Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Gravely |
Garden tractor | |
Gravely 816S Engine | |
|---|---|
16HP Briggs & Stratton 531cc 1-cyl gasoline | |
Fuel tank | 5.3 gal
20.1 L |
Engine details ...  | |
Gravely 816S Transmission | |
|---|---|
8-speed gear | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Open operator station. |
Dimensions & Tires | |
|---|---|
Weight | 900 lbs
408 kg |
Front tire | 16x6.50-8 |
Rear tire | 23x8.50-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
Owner's Manual 800 Series (22454) published in 1977 | |
Like Nobody Else published in 1976, by Gravely | |
Choice of the Pros published in 1977, by Gravely | |
Riding 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 | 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 |
Oil capacity | 6 qts
5.7 L |
Oil type | SAE30 |
 | |
Dimensions
Gravely 816S Tires | |
|---|---|
Lawn/turf front | 16x6.50-8 |
Lawn/turf rear | 23x8.50-12 |
Dimensions | |
|---|---|
Length | 75.5 inches
191 cm |
Width | 36.25 inches
92 cm |
Height | 43 inches
109 cm |
Shipping weight | 900 lbs
408 kg |
Attachments
Attachment overview | |
|---|---|
40" mid-mount mower deck | |
50" mid-mount mower deck | |
Snowblower | |
Blade | |
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments. |
Photos
Gravely 816S with snow blower.
Recommended Implements & Sizing Guide
Engineering recommendations for Gravely Lawn Tractors Gravely 816S 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 816S.
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 816S Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Gravely Lawn Tractors Gravely 816S.
Converted Equivalents:
Horsepower (HP)16 hp
Kilowatts (kW)11.9 kW
Metric Horsepower (PS / CV)16.2 PS
Direct Competitor Comparison
Compare Gravely 816S against same-era industry alternatives in the same horsepower class.
Current Model
Gravely Lawn Tractors
Gravely 816S
Engine Power:Gasoline (listed): 16 hp / 11.9 kW
★ Baseline Reference
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