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Key differences: S170Lawn Tractor has more weight, a wider cutting deck, a larger engine and more engine power. S100Lawn Tractor has less weight, a narrower cutting deck, a smaller engine and less engine power.
Objective comparison of stated specs — not a recommendation.
How to read the labels
- larger / more / wider / faster — this mower has the higher value for that spec.
- smaller / less / lighter / slower — this mower has the lower value.
- Labels are directional only; whether more is desirable depends on your needs.
- Note: a lower deck-gauge number means thicker steel, so for Deck Gauge a smaller number is the more durable deck.
| Spec | S170Lawn Tractor John Deere · Riding (Lawn Tractor) |
S100Lawn Tractor John Deere · Riding (Lawn Tractor) |
|---|---|---|
| Engine | ||
| Power Source | gas | gas |
| Displacement | 44.2 ci (724 cc) larger | 30.5 ci (500 cc) smaller |
| Engine Power | 24 hp more power | 17.5 hp less power |
| Cylinders | 2 | 1 |
| Engine Model | 44U877 (M44) | 31R977 (M31) |
| Fuel Type | — | Gasoline |
| Deck | ||
| Cutting Width | 48 in (1219 mm) wider | 42 in (1067 mm) narrower |
| Min Cut Height | 1 in (25 mm) | 1 in (25 mm) |
| Max Cut Height | 4 in (102 mm) | 4 in (102 mm) |
| Deck Material | Steel, 12 gauge 0.105 in. 2.7 mm | Steel, 13 gauge0.090 in.2.3 mm |
| Discharge | — | Side discharge |
| Deck Gauge | 12 | 13 |
| Drive | ||
| Transmission | K46 heavy-duty hydrostatic, two-wheel drive | Hydrostatic, 2-wheel drive |
| Ground Speed | 5.5 mph | 5.5 mph |
| Drive System | Single belt | Manual power take-off (PTO) |
| Reverse Speed | 3.2 mph | 3.2 mph |
| Dimensions | ||
| Weight | 503 lbs (228.2 kg) heavier | 414 lbs (187.8 kg) lighter |
| Fuel Capacity | 2.4 gal (9.1 L) | 2.4 gal (9.1 L) |
| Length | — | 69.7 in.1770 mm |
| Height | — | 40 in.1016 mm |
| General | ||
| Warranty | 2 yr | 2 yr |
| Bagger Capacity | 6.5 bu (229 L) | 6.5 bu (229 L) |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.