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Gravely 8171

Gravely 8171 tractor
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The Gravely 8171 is a garden tractor introduced in 1978 as part of the 8000 Series. It features a 16.5 hp Onan 816cc 2-cylinder gasoline engine with air-cooled horizontal-shaft opposed-twin design. The tractor has an 8-speed shaft-driven gear transmission with 8 forward and 4 reverse speeds, two-wheel drive, manual steering, and mechanical band brakes. It includes an open operator station and a mid independent PTO with mechanical clutch. The hydraulic system is open center type with 0.375 gal capacity and 1200 psi pressure. Dimensions include a 48 inch wheelbase, 75.5 inch length, and 935 lbs shipping weight. Tires are lawn/turf type with 16x7.50-8 front and 23x10.50-12 rear sizes. Electrical system features a 12 volt battery and 15 amp flywheel alternator charging system. Fuel capacity is 5.3 gallons.
Gravely 8171garden tractor16.5 hpOnan engine8-speed transmissionlawn tractor8000 Series1978
Power16 hp
Founded-
Model8171

Technical Specifications

Detailed specifications and technical data for Gravely 8171

Power

Power (gross):16.5 hp (12.3 kW)

Tires

Rear tire:23x10.50-12
Front tire:16x7.50-8

Engine

Type:gasoline
Model:Onan CCKA
Cooling:air-cooled horizontal-shaft opposed-twin
Starter:electric
Cylinders:2-cylinder
Bore/Stroke:3.00x3.25 inches (76 x 83 mm)
Displacement:816 cc (49.8 ci)
Oil capacity:2 qts (1.9 L)
Power (gross):16.5 hp (12.3 kW)
Starter volts:12

Capacity

Fuel:5.3 gal (20.1 L)
Hydraulic system:0.375 gal (1.4 L)

Dimensions

Width:41.75 inches (106 cm)
Height:43 inches (109 cm)
Length:75.5 inches (191 cm)
Wheelbase:48 inches (121 cm)
Shipping weight:935 lbs (424 kg)
Ground clearance:7 inches (17 cm)

Electrical

Ground:negative
Battery AH:42
Battery volts:12
Charging amps:15
Charging system:flywheel alternator

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)

Production

Series:8000 Series
Category:Garden tractor
Manufacturer:Gravely
Year introduced:1978

Transmission

Type:shaft-driven gear
Gears:8 forward and 4 reverse
Description: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.

Steering and Brakes

Drive:Two-wheel drive
Brakes:Mechanical band brakes
Steering:Manual steering
Operator station:Open operator station

Power Take-off (PTO)

Clutch:mechanical
Mid PTO:independent

Related Models

Gravely 8177

Model:8177

Gravely 8161

Model:8161