Gravely GEM 16
The Gravely GEM 16 is a tractor produced by Gravely Lawn Tractors. The listed engine power is Gasoline (gross): 16 hp / 11.9 kW. Transmission: Eaton 850. Operating weight: 610 lbs 276 kg.
Engine Power
Gasoline (gross): 16 hp / 11.9 kW
Fuel & Capacities
4.5 gal
17.0 L
Transmission
Eaton 850
Operating Weight
610 lbs
276 kg
Overview
 | 1991 - 1994
Gravely Estate Mower SeriesLawn tractor
Gravely Estate Mower Series
Lawn tractor |
|---|
Production | |
|---|---|
Manufacturer | Gravely (a part of Ariens) |
Lawn tractor | |
Gravely GEM 16 Engine | |
|---|---|
16HP Vanguard 2-cyl gasoline | |
Fuel tank | 4.5 gal
17.0 L |
Engine details ...  | |
Gravely GEM 16 Transmission | |
|---|---|
hydrostatic | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Open operator station. |
Power Take-off (PTO) | |
|---|---|
Mid PTO | independent |
Clutch | electric |
Mid PTO Type | pulley |
Dimensions & Tires | |
|---|---|
Wheelbase | 48 inches
121 cm |
Weight | 610 lbs
276 kg |
Front tire | 16x6.50-8 |
Rear tire | 23x8.50-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging amps | 16 |
Battery volts | 12 |
References | |
|---|---|
 | |
Riding Tractors published in 1991, by Gravely |
Engine
Engine Detail — Gasoline
Manufacturer | Vanguard |
Fuel Type | Gasoline |
Configuration | 2-cylinder, air-cooled vertical-shaft |
Power (gross) | 16 hp
11.9 kW |
Starter | electric |
Starter volts | 12 |
Oil capacity | 2 qts
1.9 L |
Transmission
Transmission — Eaton 850
Transmission | Eaton 850 |
Type | belt-driven hydrostatic |
Gears | infinite forward and reverse |
Oil capacity | 6 qts
5.7 L |
 | |
Dimensions
Gravely GEM 16 Tires | |
|---|---|
Lawn/turf front | 16x6.50-8 |
Lawn/turf rear | 23x8.50-12 |
Dimensions | |
|---|---|
Wheelbase | 48 inches
121 cm |
Length | 68 inches
172 cm |
Width | 36.5 inches
92 cm |
Height (steering wheel) | 47 inches
119 cm |
Weight | 610 lbs
276 kg |
Attachments
Attachment overview | |
|---|---|
40" mid-mount mower deck | |
50" mid-mount mower deck | |
Snowblower | |
Blade |
Photos
Gravely GEM 16 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Gravely Lawn Tractors Gravely GEM 16 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 GEM 16.
Estimated Continuous Field Runtime: 5.4 hrs
Approximately 5.4 hours of continuous field operation at ~75% rated power on a full tank (4.5 gal / 17 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 GEM 16 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Gravely Lawn Tractors Gravely GEM 16.
Converted Equivalents:
Horsepower (HP)16 hp
Kilowatts (kW)11.9 kW
Metric Horsepower (PS / CV)16.2 PS
Direct Competitor Comparison
Compare Gravely GEM 16 against same-era industry alternatives in the same horsepower class.
Current Model
Gravely Lawn Tractors
Gravely GEM 16
Engine Power:Gasoline (gross): 16 hp / 11.9 kW
★ Baseline Reference
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