4.5HP Self-Propelled Gasoline Lawn Mower
Walk-behind mower with drive assist for medium to large lawns.
A 4.5HP self-propelled gasoline mower takes the push work out of mowing. The engine powers both the blade and rear wheels, so you just guide it. With 18″-20″ deck and single-lever height adjust, it handles hills, thick grass, and 800-1500m² lawns without wearing you out.
Why go self-propelled vs push:
4.5HP 4-stroke engine: ∼173cc-196cc OHV motor gives enough torque for drive + blade. Cuts tall/wet grass without stalling.
Rear-wheel drive: Pulls itself forward at 3-5 km/h. Variable speed or single speed via bail bar. Easy on slopes and turns.
18″ – 20″ cutting width: 460-510mm deck covers big lawns fast. Fewer passes than 16″ models.
3-in-1 modes: Mulch, rear bag, side discharge. Switch without tools on most models.
Single-lever height adjust: 25-75mm range, 6-8 positions. Set all wheels at once for even cut.
Features:
- Engine: 4.5HP 4-stroke OHV, air-cooled
- Displacement: 173cc – 196cc
- Cutting Width: 18″ – 20″ / 460 – 510 mm
- Drive Type : Self-propelled, rear-wheel drive
- Drive Speed: 3.6 km/h fixed or 0-5 km/h variable
- Cutting Height: 25-75 mm, 6-8 positions
- Deck Material: Steel, 1.8-2.0mm
- Discharge Modes 3-in-1: Mulch / Rear bag / Side
- Grass Bag: 50L – 65L, hard top + full indicator
- Blade Type: High-lift or mulching blade
- Fuel Tank: 1.0 – 1.2 L
- Oil Capacity: 0.6 L / SAE 30
- Start System: Recoil start, some with auto-choke
- Wheels Front: 7″-8″ / Rear: 8″-11″, ball bearing
- Handle: Foldable, 3-height adjust, soft grip
- Net Weight: 32 – 38 kg
- Noise Level: 96 – 98 dB
Best for: Lawns 800-1500m², sloped yards, thick grass, and users who want less physical effort. Self-propelled saves 50%+ effort vs push mowers on hills.
Note: Self-propelled adds gearbox + drive belt. Check belt tension yearly. Don’t pull mower backward with drive engaged or you’ll damage transmission.
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