Compare Mowers
Prices are the recommended retail prices published by each manufacturer’s Australian site, in AUD, as read on the date shown on each model’s page; dealers set the final price.
A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, read the values and decide what fits your needs.
Best suited for
What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.
- Kubota ZD1221RL-72R — commercial: daily paid use and high acreage; 72-inch deck
- Kubota F3690-SN — commercial: daily paid use and high acreage
What’s different? The 5 differences that matter most, from the published figures.
- ZD1221RL-72R uses a Kubota D1305-E3-ZD-3 engine; F3690-SN uses a Kubota V1505 engine. The engine maker builds the engine; the mower maker chooses the model, rating and fit, so the badge alone does not settle output or longevity.
- ZD1221RL-72R has a 2-HST w/ Gear reduction transmission; F3690-SN has a HST transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
- ZD1221RL-72R has Adjustable Dual Lever Steering drive; F3690-SN has 4WD drive.
- ZD1221RL-72R has a 29.1 hp engine; F3690-SN has a 36 hp engine, a 6.9 hp difference. Published horsepower is the maker's rating at a stated engine speed. It is a different measure from displacement, and two engines of equal rating can pull differently.
- ZD1221RL-72R holds 49 L (12.9 gal) of fuel; F3690-SN holds 61 L (16.1 gal) of fuel, a 12 L difference. Tank size bounds how long a machine runs between stops. Consumption varies with engine, load and speed, so hours per tank are not fixed.
3 more differences, what isn’t comparable
Other verified differences
- ZD1221RL-72R has a published top speed of 10.6 mph; F3690-SN has a published top speed of 12.4 mph, a 1.9 mph difference.
- ZD1221RL-72R has a 1,261 cc (77 ci) engine; F3690-SN has a 1,498 cc (91.4 ci) engine, a 237 cc difference.
- ZD1221RL-72R weighs 805 kg (1,775 lbs); F3690-SN weighs 765 kg (1,687 lbs), a 40 kg difference.
Not comparable
- Cutting Width: not published for F3690-SN.
- Bagger Capacity: not published for ZD1221RL-72R.
- Blades: not published for F3690-SN.
- Deck Construction: not published for F3690-SN.
- Cut height range: not published for F3690-SN.
Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.
Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.
| Spec | ZD1221RL-72R Kubota · Commercial |
F3690-SN Kubota · Commercial |
|---|---|---|
| RRP (AUD) | dealer quote | dealer quote |
| Engine | ||
| Power Source | diesel | diesel |
| Engine Make | Kubota D1305-E3-ZD-3 | Kubota V1505 |
| Displacement | 77 ci (1261 cc) | 91.4 ci (1498 cc) |
| Engine Power | 29.1 hp | 36 hp |
| Cylinders | 3 | 4 |
| Fuel Type | Diesel | Diesel |
| Deck | ||
| Cutting Width | 72 in (1829 mm) | — |
| Blades | 3 | — |
| Deck Construction | Kubota ProDeck | — |
| Min Cut Height | 1 in (25 mm) | — |
| Blade Tip Speed | 17999 ft/min (5486 m/min) | — |
| Max Cut Height | 5 in (127 mm) | — |
| Drive | ||
| Transmission | 2-HST w/ Gear reduction | HST |
| Ground Speed | 10.6 mph | 12.4 mph |
| Drive Tire Size | 26×12.0-16 | 18×9.5-8 |
| Reverse Speed | 5.3 mph | 6.8 mph |
| Drive System | Adjustable Dual Lever Steering | 4WD |
| Dimensions | ||
| Weight | 1775 lbs (805 kg) | 1687 lbs (765 kg) |
| Fuel Capacity | 12.9 gal (49 L) | 16.1 gal (61 L) |
| Length | 93.7 in (2380 mm) | 96.5 in (2450 mm) |
| Width | 75.2 in (1910 mm) | 53.9 in (1370 mm) |
| Height | 78.7 in (2000 mm) | 78.1 in (1985 mm) |
| General | ||
| Bagger Capacity | — | 11.4 bu (400 L) |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.