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How to read a tractor spec sheet
The numbers on a brochure only help if you know what they measure. This guide explains the common lines.
A spec sheet is a sales tool and a comparison tool. This page explains what common lines mean and where to be careful. It deliberately contains no figures for any brand or model.
1. Engine versus PTO horsepower
Engine horsepower is measured at the engine. PTO horsepower is what is left at the power take-off shaft after drivetrain losses. Implements like mowers and balers care about PTO power. Check which rating a figure refers to and what standard was used.
2. Hydraulic flow and pressure
| Term | What it means |
|---|---|
| Flow (gallons per minute) | How fast fluid is delivered. Higher flow runs loader and implement functions faster. |
| Pressure (psi) | How hard the fluid pushes, which sets the force a cylinder can deliver. |
| Lift capacity | What the three-point hitch or loader can lift, and at what point. Ask where it was measured. |
| Remotes | Valves that run implements and loader cylinders. Check the number and type. |
3. Transmission and drive
- Gear: clutch-operated, strong and simple.
- Hydrostatic (HST): pedal-controlled speed, easy for loader work.
- Powershift and CVT: shift under load or continuously, with different cost and repair profiles.
- 2WD versus 4WD: traction and loader stability differ.
4. Weight, size and clearance
Weight affects traction, ground pressure and transport. Dimensions affect where the tractor fits. Ground clearance and tire size affect row-crop and orchard work.
5. Hitches and PTO
Hitch category (1, 2, 3 or 4) must match your implements, and PTO speed (commonly 540 or 1000 rpm) must match the implement. Confirm fit before you buy.
6. Compare carefully
- Same rating standard and same configuration (tires, ballast, cab)
- Real-world tests, such as the independent Nebraska Tractor Test reports, where available
- Warranty terms in writing, plus parts and service availability near you