Bolens G172

Name: Bolens G172
Brand: Bolens

Power

17 hp

Production

1978-1981

Transmission

Unsynchronized gear

Weight

1056 lbs [479 kg]

Drive

2WD

Under 25 HP 1970s 1980s

From the same series:

G154

G174

Introduction

Bolens G172 Sub-Compact Utility Tractor

The Bolens G172 is a sub-compact utility tractor produced by Iseki and distributed by Bolens between 1978 and 1981. This machine was designed to serve as a versatile utility platform for small-scale agricultural tasks, grounds maintenance, and property management.

Engine and Performance

The tractor is powered by a 17 hp (12.7 kW) liquid-cooled engine with a displacement of 46.6 cubic inches (0.8 L). It features a dry-element air cleaner and requires an oil change every 100 hours. The electrical system is supported by a 12-volt, 45 AH battery and an electric starter, with glow plugs provided for cold-start assistance.

Transmission and Drivetrain

The G172 utilizes an unsynchronized gear transmission offering 6 forward and 2 reverse speeds, utilizing a dry disc clutch. The gearbox includes three main gears with a high-low range shift. To ensure mechanical longevity, the tractor must be brought to a complete stop before shifting gears or ranges. Power is delivered to the ground via a two-wheel-drive system, complemented by a mechanical rear differential lock for enhanced traction.

Power Take-Off and Hydraulics

The rear power take-off (PTO) provides three distinct speed options: 472, 752, and 1177 RPM. These speeds are achieved at a constant engine speed of 2700 RPM, allowing the operator to match implement requirements to the engine's power output.

Dimensions and Handling

With a wheelbase of 50.4 inches (128 cm) and a total weight of 1056 lbs (479 kg), the G172 is designed for maneuverability. It features manual steering and mechanical internal expanding brakes. The tractor is equipped with standard agricultural tires sized 4.00-12 at the front and 8-16 at the rear, though turf tire options were available for lawn maintenance applications.

Conclusion

"The Bolens G172 is a robust, compact utility tractor well-suited for light agricultural duties and property maintenance. Its simple mechanical design and flexible PTO speeds make it a practical choice for operators requiring a reliable, small-frame machine for basic field or garden work."

Introduction

Production Information of Bolens, G172

The production information of the tractor (G172) includes details about its manufacturing.

Sub-Compact Utility tractor


Distributor	Bolens
Manufacturer	Iseki

Dimension and Tires Information of Bolens, G172

This section sums up the dimension and tires information of the tractor.


Front tread	28.3/34.6 inches [71/87 cm]
Wheelbase	50.4 inches [128 cm]
Weight	1056 lbs [479 kg]
Height	46.9 inches [119 cm]
Length	76.4 inches [194 cm]
Rear tread	29.1/33/37 inches [73/83/93 cm]
Ground clearance	10.8 inches [27 cm]
Width	37.8 inches [96 cm]


Standard tires (ag)	Front: 4.00-12. Rear: 8-16
Lawn/turf front	20x8.00-10
Lawn/turf rear	8-16

Engine Specifications of Bolens, G172

Get the specifications for the engine and if different options are available.

Liquid-cooled


Starter volts	12
Displacement	46.6 ci [0.8 L]
Oil capacity	2.7 qts [2.6 L]
Air cleaner	Dry element
Bore/Stroke	3.07x3.15 inches [78 x 80 mm]
Oil change	100 h
Coolant capacity	4.4 qts [4.2 L]
Starter	Electric
Pre-heating	Glow plugs
Power	17 hp [12.7 kW]

Transmission Information of Bolens, G172Y

Discover all variants of transmission available for this tractor model.

Transmission variants 1

Three gears (1-3) plus reverse (R) with additional high-low range shift. Tractor must be stopped, and clutch used, to shift gears and range.


Type	Unsynchronized gear
Oil capacity	13 qts [12.3 L]
Gears	6 forward and 2 reverse
Clutch	Dry disc

Mechanical Specs of Bolens, G172Y

This section summarizes all mechanical information such as the brake system and other specifications.

Two-wheel drive

Open operator station.

Mechanical internal expanding brakes

Manual steering


Differential lock	Mechanical rear

Power Information of Bolens, G172Y

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Transmission
	1177@2700
	752@2700
Rear PTO Type	472/752/1177
Engine RPM	472@2700

Electrical System of Bolens, G172

Battery voltage, charging system and ground.


Ground	Negative
Battery volts	12
Battery AH	45

Frequently asked questions

How much horsepower does the Bolens G172 have?

The Bolens G172 delivers 17 HP.

What years was the Bolens G172 produced?

The Bolens G172 was produced in 1978-1981.

What transmission does the Bolens G172 use?

The Bolens G172 uses a Unsynchronized gear transmission.

How much does the Bolens G172 weigh?

The Bolens G172 weighs 1056 lbs [479 kg].

Is the Bolens G172 4WD?

The Bolens G172 is available in 2WD.

More Bolens models

G17417 HP · 1978 - 1991 H170417 HP · 1985 - 1991 G15215 HP · 1978 - 1991 G15415 HP · 1978 - 1991 G19219 HP · 1979 - 1983 G19419 HP · 1979 - 1983 H150215 HP · 1985 - 1991 G21221 HP · 1984 - 1990

View all 16 Bolens models →

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