Exmark Lazer Z Diesel (LZS 144" 86T)
Commercial mower · Model LZS86TDYM12RW0 · Commercial-duty · Diesel
$85,499 Exmark list price
Manufacturer list price only — it excludes tax, freight, dealer setup and any local discount, and dealers set the final price.
- Mows an acre in 7 min (5 at top speed) How long for your yard? ›
- How these are worked out ›
The Exmark Lazer Z Diesel (LZS 144 in 86T) is a commercial-grade commercial mower, built for daily commercial mowing, with a 144-inch deck.
At a glance
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Engine
| Power Source | diesel |
|---|---|
| Engine Make | Yanmar 3TNV86CT |
| Engine Power | 43.5 hp |
Deck
| Cutting Width | 144 in (3658 mm) |
|---|---|
| Max Cut Height | 5.5 in (140 mm) |
| Min Cut Height | 1 in (25 mm) |
Drive
| Ground Speed | 10 mph |
|---|
Dimensions
| Fuel Capacity | 12 gal (45.4 L) |
|---|
Professional use
How the Lazer Z Diesel (LZS 144 in 86T) fits commercial and high-acreage work, from the specs we have. Duty class: Commercial.
Productivity computed from deck width and ground speed. Compare on the calculator ›
| Deck width | 144 in |
|---|---|
| Engine make | Yanmar 3TNV86CT |
| Engine power | 43.5 hp |
| Ground speed | 10 mph |
| Cut-height range | 25 mm – 140 mm |
| Fuel capacity | 45.4 L |
Exmark doesn’t publish 13 of these for the Lazer Z Diesel (LZS 144 in 86T): engine displacement, transmission, drive type, weight, warranty, commercial warranty, deck construction, deck gauge, spindle type, frame construction, anti-scalp rollers, drive tire size, seat type.
See the Exmark commercial pro hub › · Professional buying hub ›
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Specs verified against the manufacturer spec sheet on Jun 6, 2026 — exmark.com.
See every mower with a Yanmar engine ›
Other Exmark Lazer Z Diesel models › 4 more in this range: Lazer Z Diesel (LZS 60 in), Lazer Z Diesel (LZS 72 in 80T), Lazer Z Diesel (LZS 72 in), Lazer Z Diesel (LZS 96 in 88C)
See all Exmark mowers and specs ›
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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 Exmark’s own numbers — not published by the manufacturer.
Mowing time
- ¼ acre2 min 1 min
- ½ acre4 min 3 min
- 1 acre7 min 5 min
- 2 acres15 min 10 min
- 5 acres37 min 26 min
- 10 acres1 h 14 min 52 min
About 7 min per acre at 8.15 acres/hour, mowing at 7.0 mph. The second figure is at the published 10.0 mph top speed (11.64 acres/hour) — faster than anyone really mows. About 97.8 acres per tank.
Gate & trailer fit
- 32 in gateToo wide
- 36 in gateToo wide
- 48 in gateToo wide
Needs at least 151 in of clearance (estimated).
Power & run time
- Power per deck inch0.302 hp/in
- Run time per tank~12.0 h
Mowing times assume 8.15 acres/hour: deck width x 7.0 mph at 80% efficiency, which allows for overlap, turns and trimming. 7.0 mph is 70% of the 10.0 mph top speed Exmark publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 10.0 mph, shown so you can see it.
Fit uses the deck width plus 6 in for the discharge chute, because Exmark doesn't publish an overall width — measure before buying if a gate is tight.
Run time assumes a typical 1 gal/hour burn at working load; real consumption varies with engine, load and cut.
Exmark Lazer Z Diesel (LZS 144 in 86T) questions
What size deck is on the Exmark Lazer Z Diesel (LZS 144 in 86T)?
The Exmark Lazer Z Diesel (LZS 144 in 86T) has a 144-inch (3658 mm) cutting deck.
What engine is in the Exmark Lazer Z Diesel (LZS 144 in 86T)?
The Exmark Lazer Z Diesel (LZS 144 in 86T) is powered by a Yanmar 3TNV86CT, 43.5 hp. Horsepower is the manufacturer's own rating.
How fast is the Exmark Lazer Z Diesel (LZS 144 in 86T)?
Top ground speed is 10 mph. With its 144-inch deck that works out to about 11.64 acres per hour at 80% efficiency — allowing for overlap, turns and trimming.
How long does the Exmark Lazer Z Diesel (LZS 144 in 86T) take to mow an acre?
About 5 min per acre, from its 144-inch deck at 10 mph and 80% efficiency — roughly 11.64 acres an hour, so five acres is about 26 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 Exmark Lazer Z Diesel (LZS 144 in 86T)?
The Exmark Lazer Z Diesel (LZS 144 in 86T) holds 12 gal (45.4 L) of fuel.
How much does the Exmark Lazer Z Diesel (LZS 144 in 86T) cost?
Exmark's published list price is $85,499, checked 23 October 2026. That excludes tax, freight, dealer setup and any local discount — dealers set the final price.
What is the Exmark Lazer Z Diesel (LZS 144 in 86T) built for?
Commercial-duty commercial mower. Built for daily, paid commercial use.
Source: Exmark (manufacturer) · archived copy