Scag SFC-21
Push / Walk-Behind mower · Model SFC-21 · Commercial-duty · Gas
The Scag SFC-21 is a commercial-grade gas walk-behind mower, built for daily professional use, with a 21-inch deck and a 163cc engine making 4 hp. It weighs 136 lb (61.7 kg).
At a glance
Power Source
gas
Cutting Width
21 in (533 mm)
Displacement
9.9 ci (163 cc)
Weight
136 lbs (61.7 kg)
Engine
| Power Source | gas |
|---|---|
| Displacement | 9.9 ci (163 cc) |
| Engine Power | 4 hp |
| Cylinders | 1 |
| Engine Make | Honda |
Deck
| Cutting Width | 21 in (533 mm) |
|---|---|
| Min Cut Height | 1.5 in (38 mm) |
| Max Cut Height | 4.5 in (114 mm) |
| Deck Construction | 14 gauge deck with 14-gauge replaceable guards for strength and longevity. Deep draw stamped. |
Drive
| Ground Speed | 4.2 mph |
|---|---|
| Transmission | GT MG 512 transmission, 3-speed |
Dimensions
| Weight | 136 lbs (61.7 kg) |
|---|---|
| Fuel Capacity | 0.4 gal (1.4 L) |
Similar models
Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the SFC-21.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — scag.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
Source: Scag (manufacturer) · archived copy