This comparison evaluates the Ryobi RYRM8034 and Kubota F3990, both classified as Lawn tractors. We analyze horsepower ratings (gross and PTO), operating weight, hydraulic flow capacity, 3-point hitch lift capacity, transmission type, warranty coverage, and typical pricing signals. Both models serve similar use cases, so differences in specific specs may influence your decision based on property size, planned implements, and budget. Specs are compiled from manufacturer literature and dealer listings when available, and we update records as sources are verified.
We don't have enough comparable spec fields to compute differences reliably yet. See full specs below in the detailed comparison table.
| Specification | Ryobi RYRM8034 | Kubota F3990 |
|---|---|---|
| Engine & Power | ||
| Gross Horsepower | 42 HP | 39 HP |
| PTO Horsepower | — | — |
| Engine Manufacturer | Ryobi | Kubota |
| Cylinders | — | 4 |
| Displacement | — | 1.498 L |
| Fuel Type | Electric | Diesel |
| Drivetrain & Transmission | ||
| Transmission Type | Direct Drive Brushless | Hydrostatic |
| Drive Type | 2WD | 4WD |
| Forward Speeds | — | — |
| Reverse Speeds | — | — |
| PTO & Hydraulics | ||
| PTO Type | ||
The Ryobi RYRM8034 delivers 42 HP compared to 39 HP on the Kubota F3990, providing more power for demanding tasks.
The Ryobi RYRM8034 is specifically designed for mowing as a lawn tractor.
Both models can be equipped with front loaders if compatible. Verify loader availability and lift capacity specs with your local dealer, as configurations vary.
Warranty terms vary by dealer, region, and purchase date. We recommend confirming current warranty coverage directly with your dealer before making a purchase decision.
| — |
| — |
| PTO Speed | — | — |
| Hydraulic Flow | — | — |
| Hydraulic Pressure | — | — |
| Remote Valves | — | — |
| Dimensions & Weight |
| Operating Weight | — | 1,716 lbs |
| Length | — | 98.9 in |
| Width | — | 78.1 in |
| Height | — | 78.1 in |
| Wheelbase | — | 51.2 in |
| Ground Clearance | — | — |
| Hitch / Implements |
| 3-Point Category | — | — |
| Lift Capacity | — | — |
| Loader Compatibility | — | — |
| Warranty & Ownership |
| Powertrain Warranty | — | — |
| Bumper-to-Bumper | — | — |
| Pricing Signals | ||
| Typical Price | $3,780 | $23,760 |
| MSRP Min | $3,500 | $22,000 |
| MSRP Max | $4,025 | $25,300 |
Before purchasing, verify dealer pricing and availability in your area, confirm current warranty terms, test-drive if possible, and assess which implements or attachments you'll need. Both specs and pricing can vary by region and dealer.