Bolens G172
Power
17 hp
Production
1978-1981
Transmission
Unsynchronized gear
Weight
1056 lbs [479 kg]
Drive
2WD
From the same series:
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.
Production Information of Bolens, G172
- Sub-Compact Utility tractor
| Distributor | Bolens |
|---|---|
| Manufacturer | Iseki |
Dimension and Tires Information of Bolens, G172
| 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
- 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, G172
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, G172
- Two-wheel drive
- Open operator station.
- Mechanical internal expanding brakes
- Manual steering
| Differential lock | Mechanical rear |
|---|
Power Information of Bolens, G172
| Rear PTO | Transmission |
|---|---|
| Rear PTO(optional) | 1177@2700 |
| Rear PTO(optional) | 752@2700 |
| Rear PTO Type | 472/752/1177 |
| Engine RPM | 472@2700 |
Electrical System of Bolens, G172
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery AH | 45 |
Where it sits
With 17 HP, the Bolens G172 sits just above G154 (15 HP) in Bolens's range. Its power puts it in the 7th percentile of 1970s models in our database (1259 machines).
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.