Gravely 8177
The Gravely 8177 is a tractor produced by Gravely Lawn Tractors. It is equipped with a 816 cc 49.8 ci engine. The listed engine power is Gasoline (gross): 16.5 hp / 12.3 kW. Transmission: 8 forward and 4 reverse.
Engine Power
Gasoline (gross): 16.5 hp / 12.3 kW
Fuel & Capacities
Gasoline
Transmission
8 forward and 4 reverse
Overview
 | 1979
8000 SeriesGarden tractor
8000 Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Gravely |
Garden tractor | |
Gravely 8177 Engine | |
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16.5HP Onan 816cc 2-cyl gasoline | |
Engine details ...  |
Gravely 8177 Transmission | |
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8-speed | |
Transmission details ...  |
Mechanical | |
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Two-wheel drive | |
Open operator station. |
Hydraulics | |
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Type | open center |
Dimensions & Tires | |
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Full dimensions and tires ...  |
References | |
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 | |
Owner's Manual 8000 Series (24825) published in 1978 |
Engine
Engine Detail — 816 cc / 49.8 ci Gasoline
Manufacturer | Onan CCKA |
Fuel Type | Gasoline |
Configuration | 2-cylinder, air-cooled |
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 |
Transmission
Transmission — 8 forward and 4 reverse
Gears | 8 forward and 4 reverse |
Dimensions
Gravely 8177 Tires |
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Dimensions |
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Recommended Implements & Sizing Guide
Engineering recommendations for Gravely Lawn Tractors Gravely 8177 based on its 16.5 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 8177.
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 8177 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Gravely Lawn Tractors Gravely 8177.
Converted Equivalents:
Horsepower (HP)16.5 hp
Kilowatts (kW)12.3 kW
Metric Horsepower (PS / CV)16.7 PS
Direct Competitor Comparison
Compare Gravely 8177 against same-era industry alternatives in the same horsepower class.
Current Model
Gravely Lawn Tractors
Gravely 8177
Engine Power:Gasoline (gross): 16.5 hp / 12.3 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester D-215
Engine Power:15
Production Years:1962 - 1964
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