Hydrostatic Ground Drive System - Exmark LAZER Z Operator's Manual

• PTO Engagement Switch: Engages electric clutch
(to drive belt) which engages mower blades.
• Parking Brake Lever: Engages parking brake.
• Deck Height Adjustment Lever: Sets cutting
height to desired position.
• Deck Lift Assist Lever: Foot pedal that assists
in raising the deck.
Seat
• Type:
– 27HP Kohler and Kawasaki Units:
Standard seat with high back, foam padded
(internal suspension) and armrests.
– Briggs & Stratton Units:
Standard seat with high back, foam padded
(internal suspension), armrests, and integral
safety switch.
– 28HP Kohler EFI Units:
Deluxe suspension seat with high back, low
profile foam-in-place cushion (dampened,
adjustable spring suspension), armrests, and
integral safety switch.
– Optional seat accessories for units with
standard seats:
◊ Custom ride suspension system to enhance
Standard Seat.
◊ Deluxe suspension seat with high back,
low profile foam-in-place cushion
(dampened, adjustable spring suspension),
armrests, and integral safety switch.
• Mounting: Hinged to tilt up for access to
hydraulic pumps, battery and other components.
Held in tilted position with prop rod. Adjustable
fore and aft seat track.
• Armrests:
– Standard seat: foam padded flip-up armrests.
– Suspension seat: molded adjustable flip-up
armrests.
• Seat Safety Switch:
– Kawasaki and 27HP Kohler Units:
Incorporated into the Safety Interlock System.
Time delay seat switch eliminates rough
ground cut-outs.
– Briggs & Stratton and 28HP Kohler EFI
Units:
Integral Seat Switch. Time delay seat switch
eliminates rough ground cut-outs.

Hydrostatic Ground Drive System

• Hydrostatic Pumps: Two Hydro Gear variable
displacement piston pumps.
• Wheel Motors: Two Parker with 1 1/4 inch
tapered shafts.
• Hydraulic Oil Type: Use Mobil 1 15W-50
Synthetic motor oil.
• Hydraulic Oil Capacity: 2.1 qt. (2.0 L)
• Hydraulic Filter: Replaceable cartridge type.
– Summer use above 32°F (0°C)
P/N 109-4180: 25 microns, 10 psi bypass
– Winter use below 32°F (0°C)
P/N 1-523541: 40 microns, 18 psi bypass
• Speeds:
– 0–9.8 mph (15.8 km/hr) forward.
– 0-6.3 mph (10.1 km/hr) reverse.
• Drive wheel release valves allow machine to be
moved when engine is not running.
17
Specifications