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Bolens 3112G ST120

Bolens 3112G ST120 tractor
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The Bolens 3112G ST120 is a 1987 garden tractor from the Suburban Series, built in Port Washington, Wisconsin, USA. It features a 12 hp Briggs & Stratton 465cc 1-cylinder gasoline engine with electric start and a 5-speed Peerless 801 belt-driven gear transmission. The tractor has a wheelbase of 45 inches, length of 69 inches, width of 34.5 inches, and height of 42.5 inches. It is two-wheel drive with manual steering and disc brakes, and includes a mid PTO with an electric clutch. Attachments include a 36" mid-mount mower deck, snowblower, and blade options. Electrical system is 12 volts with a 45 AH battery and negative ground.
Bolens 3112G ST120Bolens garden tractor3112G ST120 specsBolens tractor attachments1987 Bolens tractor
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Model3112G ST120

Technical Specifications

Detailed specifications and technical data for Bolens 3112G ST120

Engine

Type:gasoline
Model:Briggs & Stratton 281707
Cooling:air-cooled vertical-shaft
Starter:electric
Cylinders:1-cylinder
Fuel tank:5 gal (18.9 L)
Bore/Stroke:3.44x3.06 inches (87 x 78 mm)
Displacement:465 cc (28.42 ci)
Oil capacity:1.5 qts (1.4 L)
Power (gross):12 hp (8.9 kW)
Starter volts:12

Overview

Year:1987
Series:Suburban Series
Built in:Port Washington, Wisconsin, USA
Category:Garden tractor

Dimensions

Width:34.5 inches (87 cm)
Height:42.5 inches (107 cm)
Length:69 inches (175 cm)
Rear tire:20x8.00-10
Wheelbase:45 inches (114 cm)
Front tire:15x6.00-6

Electrical

Ground:negative
Battery AH:45
Battery volts:12

Mechanical

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

References

Publication:High Performance published in 1987, by Bolens

Attachments

Overview:36" mid-mount mower deck, Snowblower, Blade
42" Blade:Bolens, front-mount, 42 inches width (106 cm)
36" Mower deck:mid-mount Bolens, 2-blade, Cutting width 36 inches (91 cm)
38" Snow blower:Bolens, 38 inches width (96 cm), single-stage, front-mount
38" Snow blower (two-stage):Bolens, 38 inches width (96 cm), two-stage, front-mount

Transmission

Type:belt-driven gear
Gears:5 forward and 1 reverse
Model:Peerless 801
Speeds:5-speed gear

Serial Numbers

Location:Serial number tag on the rear fender, under the tractor seat, on the left side.

Power Take-off (PTO)

PTO:independent
Type:Mid PTO
Clutch:electric