· 1986 Unverified Bolens 3012G ST125 Bolens 3012G ST125 — Suburban Series · 13 hp. Reference specifications; pending source verification.
The Bolens 3012G ST125 is a lawn tractor model with a 13 hp rating, placing it in the middle of its class for power. Manufactured between 1986 and 1987, this model is equipped with a 2-cylinder petrol air-cooled engine, which provides drive to the two-wheel drive system via a hydrostatic transmission. Its intended application is for properties of up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Richest spec table
48 rows
Transmissions
5-speed gear
Production years
1986-1987
No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.
Specifications Description Maintenance Troubleshooting Ownership Reviews Q&A Docs & sources
Hover a source tag to verify UK metric US imperial
Manufacturer Bolens Reference
Garden tractor Reference
Built in Port Washington, Wisconsin, USA Reference
Two-wheel drive Reference
Manual steering Reference
Disc brakes Reference
Open operator station. Reference
3012G gear Reference
3012H hydrostatic Reference
12.5HP Briggs & Stratton 655cc 2-cyl gasoline Reference
Fuel tank 18.9 L Reference
Briggs & Stratton 404707 Reference
gasoline Reference
2-cylinder Reference
air-cooled vertical-shaft horizontally-opposed Reference
Displacement 40 ci Reference
Bore/Stroke 87 x 55 mm Reference
Power (gross) 9.3 kW Reference
Starter electric Reference
Starter volts 12 Reference
Oil capacity 1.4 L Reference
5-speed gear Reference
Transmission Peerless 801 Reference
Type belt-driven gear Reference
Gears 5 forward and 1 reverse Reference
Mid PTO independent Reference
Clutch electric Reference
Wheelbase 114 cm Reference
Front tire 15x6.00-6 Reference
Rear tire 20x8.00-10 Reference
Lawn/turf front 15x6.00-6 Reference
Lawn/turf rear 20x8.00-10 Reference
Length 175 cm Reference
Width 87 cm Reference
Height 107 cm Reference
36" mid-mount mower deck Reference
snowblower Reference
blade Reference
Location: Serial number tag on the rear fender, under the tractor seat, on the left side. Reference
Ground negative Reference
Battery volts 12 Reference
Battery AH 45 Reference
36" mid-mount mower deck Reference
Snowblower Reference
Blade Reference
Type mid-mount Bolens Reference
Type 2-blade Reference
Cutting width 91 cm Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
Partner tool · Free Working out if you can afford this tractor?
YourIncomeCalculator.com — free, HMRC-aligned take-home pay, self-employment & VAT calculators. No sign-up.
Calculate your take-home pay Recommended kit
Handy kit for owners Popular tractor and farm accessories owners pick up for machines like this.
Disclosure: some links on this page are affiliate links. If you buy through them we may earn a small commission — at no extra cost to you. Learn more .
Compare the Bolens 3012G ST125 head-to-head Similar lawn tractors Bolens
13071 STH125 Unverified
13 hp
Bolens
13070 STG125 Unverified
13 hp
Bolens
13072 STG125 Unverified
13 hp
Bolens
13073 STH125 Unverified
13 hp
Bolens
13059 STH125 Unverified
13 hp
Bolens
13058 STG125 Unverified
13 hp
Est. 2022
Request a dealer quote Free and no obligation. FarmFleets is independent — we’ll pass your enquiry to a partner dealer where available, and you can always reach the official Bolens network directly.
Request a quote Who it suits Operation size Up to 200 ac
Budget class Entry
Is it right for you? Operation size Under 200 ac 200–1,500 ac 1,500+ ac
Need a front loader? Yes No
Check fit Get alerts for this model Email me if a recall, service bulletin, or notable price move is recorded.
Spotted something off? Suggest a correction ->
