John Deere S100 Lawn Tractor
Riding (Lawn Tractor) mower · Model S100 · Residential-duty · Gas
John Deere doesn’t publish a list price for this model — it’s dealer quote only. The John Deere product page is the place to start.
- Weighs 414 lb
- On a 6×12 trailer 1,314 lb towed, single-axle 3,500 lb
- Mows an acre in 46 min (32 at top speed) How long for your yard? ›
- How these are worked out ›
The John Deere S100 Lawn Tractor is a residential-grade gas lawn tractor, built for larger home yards, with a 42-inch deck and a 500cc engine making 17.5 hp. It weighs 414 lb (187.8 kg).
At a glance
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
Chosen by stated rules, not opinion: same class, a deck within 6 in of this one, the same kind of power and a compatible duty class, then the closest power, weight and price, with other makers preferred. Figures are the manufacturers’ published ones; nothing is estimated.
Engine
| Power Source | gas |
|---|---|
| Displacement | 30.5 ci (500 cc) |
| Engine Power | 17.5 hp |
| Cylinders | 1 |
| Engine Model | 31R977 (M31) |
| Fuel Type | Gasoline |
Deck
| Cutting Width | 42 in (1067 mm) |
|---|---|
| Min Cut Height | 1 in (25 mm) |
| Max Cut Height | 4 in (102 mm) |
| Deck Material | Steel, 13 gauge0.090 in.2.3 mm |
| Deck Construction | Stamped steel deck shell |
| Deck Gauge | 13 |
| Discharge | Side discharge |
Drive
| Transmission | Hydrostatic, 2-wheel drive |
|---|---|
| Ground Speed | 5.5 mph |
| Drive Tire Size | 20x8-8 |
| Drive System | Manual power take-off (PTO) |
| Reverse Speed | 3.2 mph |
Dimensions
| Weight | 414 lbs (187.8 kg) |
|---|---|
| Fuel Capacity | 2.4 gal (9.1 L) |
| Length | 69.7 in (1770 mm) |
| Width | 55.2 in (1402 mm) |
| Height | 40 in (1016 mm) |
Commercial / Pro
| Frame Construction | Full-length welded steel |
|---|---|
| Seat Type | One-piece |
General
| Bagger Capacity | 6.5 bu (229 L) |
|---|---|
| Warranty | 2 yr |
Productivity & acreage
S100 Lawn Tractor deck width, ground speed and computed acres-per-hour, from the specs we have. Duty class: Residential — Built for home-lawn use.
Productivity computed from deck width and ground speed. Compare on the calculator ›
| Deck width | 42 in |
|---|---|
| Engine displacement | 500 cc |
| Engine power | 17.5 hp |
| Transmission | Hydrostatic, 2-wheel drive |
| Ground speed | 5.5 mph |
| Cut-height range | 25 mm – 102 mm |
| Fuel capacity | 9.1 L |
| Weight | 187.8 kg |
| Warranty | 2 |
| Deck construction | Stamped steel deck shell |
| Deck gauge | 13 ga |
| Frame construction | Full-length welded steel |
| Drive tire size | 20x8-8 |
| Seat type | One-piece |
John Deere doesn’t publish 5 of these for the S100 Lawn Tractor: engine make, drive type, commercial warranty, spindle type, anti-scalp rollers.
See the John Deere commercial pro hub › · Professional buying hub ›
Similar models
Other riding (lawn tractor) mowers with comparable specs — including other brands — that buyers cross-shop with the S100 Lawn Tractor.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — deere.com.
What the parts on this spec sheet mean
Other John Deere 100 Series models › 7 more in this range: S110 Lawn Tractor, S120 Lawn Tractor, S130 Lawn Tractor, S140 Lawn Tractor and more
See all John Deere mowers and specs ›
Spot a wrong spec? Suggest a correction.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
What the specs work out to
Figures MowerFacts computes from John Deere’s own numbers — not published by the manufacturer.
Mowing time
- ¼ acre11 min 8 min
- ½ acre23 min 16 min
- 1 acre46 min 32 min
- 2 acres1 h 32 min 1 h 4 min
- 5 acres3 h 50 min 2 h 41 min
About 46 min per acre at 1.31 acres/hour, mowing at 3.8 mph. The second figure is at the published 5.5 mph top speed (1.87 acres/hour) — faster than anyone really mows. About 3.1 acres per tank.
Weight & hauling
- Machine weight414 lb
- + 6×12 trailer900 lb
- Towed weight1,314 lb
- single-axle 3,500 lbCarries it, 2,186 lb spare
- tandem-axle 7,000 lbCarries it, 5,686 lb spare
Needs a single-axle 3,500 lb trailer and a vehicle rated to tow at least 1,314 lb.
Gate & trailer fit
- 32 in gateToo wide
- 36 in gateToo wide
- 48 in gateToo wide
Needs at least 56 in of clearance.
Power & run time
- Power per deck inch0.417 hp/in
- Run time per tank~2.4 h
Mowing times assume 1.31 acres/hour: deck width x 3.8 mph at 80% efficiency, which allows for overlap, turns and trimming. 3.8 mph is 70% of the 5.5 mph top speed John Deere publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 5.5 mph, shown so you can see it.
Fit uses John Deere's published overall width.
Towed weight adds a 900 lb allowance for a 6x12 open utility trailer to John Deere's published machine weight. Your trailer's own weight is on its VIN plate. Tongue weight, axle placement and your vehicle's tow rating are still yours to check — this is the load, not a loading plan.
Run time assumes a typical 1 gal/hour burn at working load; real consumption varies with engine, load and cut.
John Deere S100 Lawn Tractor questions
What size deck is on the John Deere S100 Lawn Tractor?
The John Deere S100 Lawn Tractor has a 42-inch (1067 mm) cutting deck with steel, 13 gauge0.090 in.2.3 mm construction.
What engine is in the John Deere S100 Lawn Tractor?
The John Deere S100 Lawn Tractor is powered by 500 cc, 17.5 hp. Horsepower is the manufacturer's own rating.
How much does the John Deere S100 Lawn Tractor weigh?
The John Deere S100 Lawn Tractor weighs 414 lb (187.8 kg) as specified by John Deere.
What size trailer do I need for the John Deere S100 Lawn Tractor?
At 414 lb, the John Deere S100 Lawn Tractor on a typical 6x12 open utility trailer (about 900 lb empty) is roughly 1,314 lb of towed weight. That is within a single-axle 3,500 lb trailer, and your tow vehicle needs to be rated for at least 1,314 lb. Tongue weight, axle placement and your own trailer's empty weight still have to be checked — this is the arithmetic, not a loading plan.
How fast is the John Deere S100 Lawn Tractor?
Top ground speed is 5.5 mph. With its 42-inch deck that works out to about 1.87 acres per hour at 80% efficiency — allowing for overlap, turns and trimming.
How long does the John Deere S100 Lawn Tractor take to mow an acre?
About 32 min per acre, from its 42-inch deck at 5.5 mph and 80% efficiency — roughly 1.87 acres an hour, so five acres is about 2 h 40 min. Rough or obstacle-heavy ground takes longer; this is deck width times ground speed, not a timed test.
How big is the fuel tank on the John Deere S100 Lawn Tractor?
The John Deere S100 Lawn Tractor holds 2.4 gal (9.1 L) of fuel.
How much does the John Deere S100 Lawn Tractor cost?
John Deere doesn't publish a list price for the John Deere S100 Lawn Tractor — it's sold on a dealer quote. MowerFacts records prices only where the manufacturer publishes them.
What is the John Deere S100 Lawn Tractor built for?
Residential-duty riding mower. Built for home-lawn use.
Source: John Deere (manufacturer) · archived copy