John Deere Z320MZTrak™ Mower with 42-in. Deck
Zero-Turn mower · Model Z320M · Prosumer-duty · Gas
The John Deere Z320MZTrak Mower with 42-in. Deck is a prosumer-grade gas zero-turn mower, built for large residential properties and acreage, with a 42-inch deck and a 726cc engine making 21.5 hp. It weighs 561 lb (254.5 kg).
At a glance
Engine
| Power Source | gas |
|---|---|
| Displacement | 44.3 ci (726 cc) |
| Engine Power | 21.5 hp |
| Cylinders | 2 |
Deck
| Cutting Width | 42 in (1067 mm) |
|---|---|
| Min Cut Height | 1.3 in (32 mm) |
| Max Cut Height | 4.5 in (114 mm) |
| Deck Material | 12 gauge 0.105 in. 2.7 mm |
| Deck Gauge | 12 |
Drive
| Ground Speed | 7 mph |
|---|---|
| Drive System | V-belt |
| Reverse Speed | 3.5 mph |
Dimensions
| Weight | 561 lbs (254.5 kg) |
|---|---|
| Fuel Capacity | 3 gal (11.4 L) |
General
| Warranty | 3 yr |
|---|
Productivity & acreage
Z320MZTrak Mower with 42-in. Deck deck width, ground speed and computed acres-per-hour, from the specs we have. Duty class: Prosumer — A higher-capacity homeowner machine for larger properties and acreage.
Productivity computed from deck width and ground speed. Compare on the calculator ›
| Deck width | 42 in |
|---|---|
| Engine make | not specified by manufacturer |
| Engine displacement | 726 cc |
| Engine power | 21.5 hp |
| Transmission | not specified by manufacturer |
| Drive type | not specified by manufacturer |
| Ground speed | 7 mph |
| Cut-height range | 32 mm – 114 mm |
| Fuel capacity | 11.4 L |
| Weight | 254.47 kg |
| Warranty | 3 |
| Commercial warranty | not specified by manufacturer |
| Deck construction | 12 gauge 0.105 in. 2.7 mm |
| Deck gauge | 12 ga |
| Spindle type | not specified by manufacturer |
| Frame construction | not specified by manufacturer |
| Anti-scalp rollers | not specified by manufacturer |
| Drive tire size | not specified by manufacturer |
| Seat type | not specified by manufacturer |
| Dealer network | not specified by manufacturer |
See the John Deere commercial pro hub › · Professional buying hub ›
Similar models
Other zero-turn mowers with comparable specs — including other brands — that buyers cross-shop with the Z320MZTrak Mower with 42-in. Deck.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — deere.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
Source: John Deere (manufacturer) · archived copy