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Navigator EFI

A mower that fits in almost anywhere, including on high-end properties.
Owners of high-end properties are a particular bunch. They want their lawns to be perfectly manicured. They want each blade to be in place. And they don’t want to see any grass clippings. The Navigator EFI was designed for such a job. With its exclusive Exmark deck and dedicated collection system, it leaves behind nothing but that “straight out of the pages of a magazine” lawn that customers demand. But let’s not forget that this mower comes with all of the advantages of being an Exmark, including better operator comfort, higher ground speed and undeniable productivity. Those are the kinds of benefits that impress a certain discriminating customer—you. These EFI mowers are available with 48-inch decks.
Starting At: $15999.00*

*Based on CSP
Pricing and availability may vary by region and dealer. Does not include tax, delivery or set-up fees. Please use “Request an Estimate” for a detailed estimate from your local dealer.

Available Models


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Reduces fuel consumption, fewer emissions and carbon footprint.

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Fuel Savings

Delivers up to 25% in fuel savings.

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Reduce Green House Gases

Fuel saved directly correlates to reduced harmful exhaust emissions, including green house gases.

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Easy to Start

Easy start in any altitude or climate condition (no manual choke).

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Engine Efficiency

Closed loop (with O2 sensor) monitors combustion and keeps engine running at optimum levels.

Exmark Product Models: Parts Only

Sequential Fuel Injection

Delivers the precise amount of fuel and spark where needed to maximize efficiency and power.

Model Specs


*Based on CSP
Pricing and availability may vary by region and dealer. Does not include tax, delivery or set-up fees. Please use “Request an Estimate” for a detailed estimate from your local dealer.

Specifications for model # NVS730AKC48000

Blade Spindles Heavy Duty cast iron right-angle gearboxes.
Drive Tires 18 x 10.5-10 Multi-Trac® C/S.
Tractor Frame Channeled and fully welded 1.5" x 1.5" x 0.187" wall tubing with a ground clearance of 4.0", strategically located, continuous force counterweight springs.
Steering Control FeatherTouch hand-control drive levers, low-force constant speed lever.
Front Caster Tires 8 x 3.0-4 semi-pneumatic.
Parking Brake Wet disc, internal in wheel motor.
Seat Commercial grade high back contoured foam padded with hinged mounting.
Electrical 12-volt battery with 20-amp alternator.
UPC 193308000275
Power Components
Engine Brand Kohler®
Engine Model ECH730
Engine Displacement 747
Engine Series Command™ EFI
Engine Speed 3,600 rpm
Air Filter Heavy-duty canister air filtration
Fuel Type Gas EFI
Fuel Capacity 7.5-gallon (28.4-L), pivoting tank for easier engine service.
Fuel Indicator Translucent Visual
Drive Hydro-Drive
Drive Description New Dual Hydro-Gear 12 cc variable displacement pumps power Hydro-Gear H Series motors.
Speed Infinitely variable speed selection from 0–7.0 mph (11.3 kmph) forward, 0–4.5 mph (7.2 kmph) reverse.
Carb Compliant Yes
Safety Package Operator Presence Controls (OPC) and drive system interlock.
ROPS Optional 2-post foldable ROPS with seat belt and latch.
PTO Engagement Lever-actuated clutching belt with 6" brake band.
Drive Wheel Release Allows movement without engine running.
Casters 0.50" thick rear caster fork
Model Description Navigator 23 HP* Koh EFI ECH730 w/48" CD Deck

*The gross horsepower of these gasoline engines was laboratory rated at 3600 rpm by the engine manufacturer in accordance with SAE J1940 or SAE J2723. As configured to meet safety, emission and operating requirements, the actual engine horsepower on these mowers may be significantly lower.
**The gross horsepower of the 3TNV80FT was laboratory rated at 2600 rpm; the 3TNV88C was laboratory rated at 3000 rpm by the engine manufacturer in accordance with SAE J1995. As configured to meet safety, emission and operating requirements, the actual engine horsepower on these mowers may be significantly lower.

Width / Cutting Deck 48"
Deck Style Floating Deck
Deck Style Description Full floating center discharge cutting deck for dedicated bagging with patented Fill Reduction Baffles and heavy duty gear driven spindle assembly.
Deck Construction 7-gauge sides joined by a continuous bead weld to a 10-gauge top, 3/16" wear guard is welded to the entire base of the deck, 7-gauge deck spindle supports, 0.25"-thick strap steel deck supports.
Blade Tip Speed Approximately 18,500 fpm.
Cutting Heights 1.0" (2.54 cm) to 4.0" (10.2 cm) in 0.25" (0.64 cm) increments .
Blades 2 Blades at 25" Length
Bag Capacity 9.5 bushel (76 gallons)
Width 49.2 in. (125.0 cm)
Length 94.5 in. (240.0 cm)
Height 51.2 in. (130.0 cm)
Curb Weight 1170


Exmark Product Models: Parts Only

Dump Tubs

Part# 130-8457

Debris can be quickly and conveniently managed with our two polyethylene tub inserts. These removable tubs enable the weight of a full, 9.5-bushel hopper to be split and unloaded, one tub at a time.

Exmark Product Models: Parts Only

Light Kit

Part# 130-8469

Keep mowing after the sun goes down with brilliant, 35-watt halogen power from this Navigator work lamp kit. The highly durable lenses repel dust, and withstand impact. With twice the illumination output of a conventional work lamp, the kit also features a pivot base.

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Rollover Protection System

Part# 126-0369

Optimize safe operation with this Roll Over Protection System.

Exmark Product Models: Parts Only

Tire and Wheel Assembly

Part# 116-5634

ASM, TIRE AND WHEEL 18 X 10.5-10

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Automatic Door Opener Kit

Part# 130-8470

Enhance your productivity with this quick opening auto door system.

Exmark Product Models: Parts Only

Harness Add-On Accessory Kit

Part# 109-9798

Take the hassle out of dual accessory fit up with this add-on harness.

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Powered Dump

Part# 130-8458

Improve productivity by not having to leave your operator position with this power dump accessory. A full load of grass can be managed with the push of a button. Or, if dumping by hand is your preference, this accessory automatically disengages and re-engages the hopper without operator intervention.

Exmark Product Models: Parts Only

Narrow Drive Tire Kit

Part# 116-9590

The perfect pairing with tire chains in snow operations with this narrow drive kit.Narrow Drive Tire Kit (Pair) 18 x 18.5-10

Exmark Product Models: Parts Only

Dual Semi-Pneumatic Rear Casters

Part# 103-9005

Spread your hopper load to minimize turf impact with this split caster kit.

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Comfort Ride Seat Suspension

Part# 130-8471

A great value in comparison to more expensive full-suspension seats, our CustomRide suspension system easily mounts to your existing EVC operator seat. System features enable operator to customize suspension settings to their individual weight and personal preference. Fits all Lazer Z models.

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Micro-Mulch System

Part# MKNAV48

Turns the dedicated bagging deck into a mulcher. The aerodynamically designed deck, baffles and special mulching blades create airflow patterns that circulate leaves and grass for repeated cuttings and even dispersal deep into the turf. Single one piece bolt in baffle redirects clippings away from the center rear discharge opening.


We have you covered. We take great pride in the quality of our products and stand behind every single one. You can view, download, or print the warranty statement for your equipment here.