Bolens 831
Power
8 hp
Production
1979-1986
Transmission
Peerless 730
Weight
385 lbs [174 kg]
Drive
2WD
From the same series:
Introduction
Bolens 831 Riding Lawn Mower
The Bolens 831 is a riding lawn mower produced between 1979 and 1986. It belongs to the 830 series and was designed primarily for residential lawn maintenance tasks, offering a compact and maneuverable solution for property owners.
Engine and Performance
The tractor is powered by an air-cooled vertical-shaft engine with a displacement of 318 cc (19.44 ci). It generates a gross power output of 8 hp (6.0 kW) at a rated speed of 3600 RPM. The engine utilizes a Champion J-8 spark plug with a gap of 0.030 inches (0.762 mm) and a point gap of 0.020 inches (0.508 mm). The oil capacity is 1.1 liters, with a recommended change interval of 25 hours.
Transmission and Power Take-Off
The machine features a belt-driven gear transmission, specifically the Peerless 730 model, which provides 5 forward gears and 1 reverse gear to allow for varied speed selection. Power delivery to attachments is managed by a mechanical idler pulley clutch and an independent mid-mounted Power Take-Off (PTO) system.
Mechanical Configuration and Dimensions
Built on a two-wheel-drive chassis, the Bolens 831 includes manual steering and disc brakes for operator control. The unit has a wheelbase of 43 inches (109 cm), a total length of 60 inches (152 cm), and a height of 38.4 inches (97 cm) to the steering wheel. The total weight of the tractor is 385 lbs (174 kg). It is equipped with specific lawn and turf tires, sized 4x10.4 for the front and 6.5x16-8 for the rear.
Electrical System
The electrical system operates on 12 volts, powered by a 12-volt battery with a capacity of 19 AH. The system utilizes a negative ground configuration and features an electric starter for reliable ignition.
Conclusion
The Bolens 831 is a straightforward, entry-level riding mower suitable for standard lawn care applications. Its combination of a 30-inch mower deck, multi-gear transmission, and compact dimensions makes it a practical machine for residential mowing requirements.
Production Information of Bolens, 831
- Riding lawn mower
| Manufacturer | Bolens |
|---|
Dimension and Tires Information of Bolens, 831
| Wheelbase | 43 inches [109 cm] |
|---|---|
| Weight | 385 lbs [174 kg] |
| Length | 60 inches [152 cm] |
| Height (steering wheel) | 38.4 inches [97 cm] |
| Lawn/turf front | 4x10.4 |
|---|---|
| Lawn/turf rear | 6.5x16-8 |
Engine Specifications of Bolens, 831
- Air-cooled vertical-shaft
| Sparkplug | Champion J-8 |
|---|---|
| Displacement | 318 cc [19.44 ci] |
| Oil capacity | 1.125 qts [1.1 L] |
| Rated RPM | 3600 |
| Bore/Stroke | 3.00x2.75 inches [76 x 70 mm] |
| Oil change | 25 h |
| Point gap | 0.020 inches [0.508 mm] |
| Sparkplug gap | 0.030 inches [0.762 mm] |
| Starter volts | 12 |
| Starter | Electric |
| Power (gross) | 8 hp [6.0 kW] |
Transmission Information of Bolens, 831
Transmission variants 1
| Transmission | Peerless 730 |
|---|---|
| Clutch | Idler pulley |
| Type | Belt-driven gear |
| Gears | 5 forward and 1 reverse |
Mechanical Specs of Bolens, 831
- Two-wheel drive
- Open operator station.
- Manual steering
- Disc brakes
Power Information of Bolens, 831
| Mid PTO | Independent |
|---|---|
| Clutch | Mechanical idler pulley |
Electrical System of Bolens, 831
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery AH | 19 |
Where it sits
Its power puts it in the 52th percentile of 1970s models in our database (1008 machines).
Frequently asked questions
How much horsepower does the Bolens 831 have?
The Bolens 831 delivers 8 HP.
What years was the Bolens 831 produced?
The Bolens 831 was produced in 1979-1986.
What transmission does the Bolens 831 use?
The Bolens 831 uses a Peerless 730 transmission.
How much does the Bolens 831 weigh?
The Bolens 831 weighs 385 lbs [174 kg].
Is the Bolens 831 4WD?
The Bolens 831 is available in 2WD.