John Deere S100 42 in 17.5 HP GAS Hydrostatic Riding Lawn Tractor
Tackle your lawn with ease and efficiency using the John Deere 42-in. Lawn Tractor, built for reliable performance, comfort, and all-season versatility. Powered by a 17.5 HP single-cylinder engine and paired with a 42″ Edge™ Mower Deck, this mower is ideal for mowing, mulching, and bagging across flat terrain with obstacles.
Key Features:
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17.5 HP John Deere Engine
Robust power for mowing, mulching, and bagging—featuring full-pressure lubrication, overhead valves, and a cast-iron cylinder liner for long engine life. -
Easy, Choke-Free Starts
Electronic ignition and spring-return throttle eliminate guesswork during start-up. -
42″ Edge™ Mower Deck
Designed for high-quality cutting performance and clean discharge, even at faster speeds. -
Hydrostatic Transmission with Side-by-Side Pedals
Offers smooth speed and direction control, just like driving a car—ideal for maneuvering around landscaping features. -
Comfort-Focused Operator Station
Wide footrest, high-back adjustable seat (11″), ergonomic controls, and anti-vibration floor mats for a smoother ride. -
Spring-Assisted Deck Lift
Makes it easy to raise or lower the mower deck with minimal effort. -
Durable Steel Frame
Full-length welded 12-gauge steel frame with powder-coated finish ensures long-lasting structural integrity. -
Cast-Iron Front Axle
Delivers strength and durability under tough conditions without bending. -
No-Tools Oil Drain Valve
Simplifies oil changes and routine maintenance. -
2.4-Gallon Fuel Tank
Rear-mounted tank with center fill opening and tethered cap for spill-free refueling.
Performance & Build:
- Engine: 17.5 HP, 500cc, John Deere 31R977 (M31)
- Transmission: TLT200 Hydrostatic, Rear-Wheel Drive
- Forward Speed: Up to 5.5 mph
- Reverse Speed: Up to 3.2 mph
- Cutting Height: 1″ to 4″, adjustable in 0.25″ increments (13 positions)
- Deck Construction: 13-gauge stamped steel
- Turning Radius: 18 inches (tight for a lawn tractor)
- Fuel Capacity: 2.4 gallons
- Battery: 12V, 300 CCA
- Tires: Front – 15×6-6, Rear – 20×8-8
- Weight: 414 lbs (without fuel)
Comfort & Convenience:
- Adjustable seat with 5.5″ fore/aft travel
- Cup holder and storage tray with optional cover
- Easy-access ignition and controls
- Bright twin incandescent headlights for visibility
- Built-in hour meter for maintenance tracking
Attachment-Ready:
Equipped with CargO Mount™ System, making it easy to install compatible add-ons:
Snow Equipment:
- 44” Two-Stage Snow Blower
- 46” Front Blade
- Weather enclosure & tire chains
Yard Tools:
- Rear Bagger (6.5 bushel, sold separately)
- Mulching kit
- Tow-behind sprayers, spreaders, and more
Extras:
- Front bumper
- Sun canopy
- Lawn striping kit
- Bucket holder
Warranty & Support:
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2-Year/120-Hour Bumper-to-Bumper Warranty
Whichever comes first—see JohnDeere.com for full terms. - Built in Greeneville, Tennessee, USA
Product Dimensions:
- Length: 69.7 in
- Width with Deck: 55.2 in (46.5 in with deflector raised)
- Height: 40 in
- Wheelbase: 48.9 in
- Weight: 414 lbs (without fuel)
Most orders ship within 1-3 business days.
All major cards accepted, protected checkout.
New and factory-reconditioned items are covered. See product details for warranty length.
Orders are processed within 1-3 business days. Large equipment ships via freight with delivery scheduled by appointment. See our Shipping Policy for details.
Most items can be returned within 30 days of delivery for a full refund, less original shipping costs. See our Refund Policy for full details.
Factory-reconditioned items are inspected and serviced by the manufacturer to meet original performance specifications, and are covered by warranty. Check this product's title and description to confirm its condition.
Yes. Manufacturer warranty terms apply as noted on this product page. Contact us if you need help with a warranty claim.
Have a question about fit, specs, or which model is right for you? Contact us and we'll help you decide.
Customer reviews
Write a review
Starts on the first pull every time so far, very happy with it.
Bagging system works great, no clumping even in thick grass. Wish it came with a carrying case but that's a minor gripe. Would recommend to anyone considering the John Deere S100 42 in 17.5 HP GAS Hydros.
Starts on the first pull every time, way better than our old one. Assembly took a bit longer than expected but works great.
Couldn't be happier. Starts on the first pull every time, way better than our old one. Would recommend to anyone considering the John Deere S100 42 in 17.5 HP GAS Hydrostatic Riding Lawn Tractor.
Exceeded my expectations. Cuts evenly even on our sloped yard, very happy with the power. Would recommend to anyone considering the John Deere S100 42 in 17.5 HP GAS Hydrostatic Riding Lawn Tractor.
Exceeded my expectations. Starts on the first pull every time, way better than our old one. Would recommend to anyone considering the John Deere S100 42 in 17.5 HP GAS Hydrostatic Riding Lawn Tractor.