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Bolens 3212G ST120

The Bolens 3212G ST120 is a tractor produced by Bolens Lawn Tractors. It is equipped with a 465 cc 28.42 ci engine. The listed engine power is Gasoline (gross): 12 hp / 8.9 kW. Transmission: Peerless 920. Operating weight: 462 lbs 209 kg.

Engine Power
Gasoline (gross): 12 hp / 8.9 kW
Fuel & Capacities
5 gal 18.9 L
Transmission
Peerless 920
Operating Weight
462 lbs 209 kg

Overview

Bolens 3212G ST120 tractor photo
1987 - 1992 Suburban SeriesLawn tractor Suburban Series Lawn tractor
Production
Manufacturer
Bolens
Lawn tractor
Built in Port Washington, Wisconsin, USA
Bolens 3212G Engine
12HP Briggs & Stratton 465cc 1-cyl gasoline
Fuel tank
5 gal 18.9 L
Engine details ...
Bolens 3212G Transmission
5-speed gear
Transmission details ...
Mechanical
Two-wheel drive
Manual steering
Disc brakes
Open operator station.
Power Take-off (PTO)
Mid PTO
independent
Clutch
electric
Dimensions & Tires
Wheelbase
45 inches 114 cm
Weight
462 lbs 209 kg
Front tire
15x6.00-6
Rear tire
20x8.00-10
Full dimensions and tires ...
Electrical
Ground
negative
Charging amps
5
Battery volts
12
Battery AH
45
References
3212G ST120 references literature
High Performance published in 1987, by Bolens
Lawn & Garden published in 1988, by Bolens*
Lawn and Garden Power Products published in 1989, by Bolens
Suburban Tractors published in 1990, by Bolens
Eurotrac Lawn & Garden Tractors published in 1987, by Bolens
*Publication contains known errors.

Engine

Engine Detail — 465 cc / 28.42 ci Gasoline

Manufacturer
Briggs & Stratton 281707
Fuel Type
Gasoline
Configuration
1-cylinder, air-cooled vertical-shaft
Displacement
465 cc 28.42 ci
Bore/Stroke
3.44x3.06 inches 87 x 78 mm
Power (gross)
12 hp 8.9 kW
Starter
electric
Starter volts
12
Oil capacity
1.5 qts 1.4 L

Transmission

Transmission — Peerless 920

Transmission
Peerless 920
Type
belt-driven gear
Gears
5 forward and 1 reverse
3212G ST120 920 belt-driven gear speeds

Dimensions

Bolens 3212G Tires
Lawn/turf front
15x6.00-6
Lawn/turf rear
20x8.00-10
Dimensions
Wheelbase
45 inches 114 cm
Length
69 inches 175 cm
Width
34.5 inches 87 cm
Height
42.5 inches 107 cm
Weight
462 lbs 209 kg

Attachments

Attachment overview
36" mid-mount mower deck
Snowblower
Blade
36" Mower deck
Type
mid-mount Bolens
2-blade
Cutting width
36 inches 91 cm

Photos

Bolens 3212G ST120 tractor photo

Bolens 3212G ST120 tractor photo

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Bolens Lawn Tractors Bolens 3212G ST120.

Estimated Continuous Field Runtime: 8 hrs

Approximately 8 hours of continuous field operation at ~75% rated power on a full tank (5 gal / 18.9 L).

Estimated 75% Load Fuel Burn~0.6 gal/hr (2.4 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

Bolens Lawn Tractors Bolens 3212G ST120 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Bolens Lawn Tractors Bolens 3212G ST120.

Converted Equivalents:

Horsepower (HP)12 hp
Kilowatts (kW)8.9 kW
Metric Horsepower (PS / CV)12.2 PS

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