Power, efficiency and economy. The 328G4 is equipped with a vertical crankshaft Electronic Fuel Injection (EFI) Briggs & Stratton Vanguard engine that continuously adjusts fuel ratios while using less fuel. EFI engines provide reliable hot and cold starts, reduce emissions and minimize fuel-induced service issues.
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Model 328G4 EFI Features & Benefits

B & S Vanguard Electronic Fuel Injection (EFI Engine) Engine

  • 810cc V-Twin Briggs & Stratton Vanguard Electronic Fuel Injection (EFI)
  • OHV gasoline engine with vertical crankshaft and pressure lube run cooler and provide longer service life
  • Delphi-based closed-loop EFI engine continually adjusts fuel ratio to use less fuel and provide reliable hot and cold starts, reduced exhaust emissions and fewer fuel-related service issues
  • Automotive-style plug-in diagnostics
  • Facilitates faster and more precise service

 

Hydro-Gear ZT-4400 Transmission 

The G4 Hydro-Gear ZT-4400 transmissions are designed to provide powerful, smooth response. The heavy-duty, self-contained commercial transaxles are integrated with a cooling fan and feature 1-3/8-inch axles for longer service life. You’ll also enjoy best-in-class transmission fluid change intervals after a 100-hour break-in period, reducing costs and maintenance time.

Heavy-duty Deck 

  • Extra-deep, 5.5-inch deck is fabricated from heavy-gauge formed steel with a reinforced anvil edge
  • Specially designed cutting chambers enhance airflow for better cut quality
  • Deck easily converts from side discharge to optional Down Discharge™ mulching or PowerVac™ collection
  • Sentry™ spindles with massive, 8-inch flanges anchored in a 6-bolt pattern, spread the force of impact for greater strength
  • Spindle planes are fabricated from double-layered formed steel laminate and combine with the spindles to form a triple-strength deck to keep blades level and deliver a high-quality cut.
  • Sentry™ spindle guards shield spindle housing and seal lower bearings from fiber wrap and dirt ingestion

 

QuikAjust Tilt™ Levers 

QuikAjust Tilt™ steering levers with "no tools" adjustment provide a 9-inch range for maximum comfort and fit while maintaining natural arm and wrist positions.

QuikAjust® Drop Pin Height Adjustment 

  • Raise and lower the deck easily with foot pedal and drop pin for precision cutting heights between 1.0 and 5.0 inches.

 

Reduced Maintenance 

  • Only two Access-Eze™ lubrication points cut maintenance time up to 95%
  • Self-tensioning belts minimize cost and labor on routine maintenance

 

Rugged Construction 

  • Robotically-welded steel construction for long-lasting durability
  • Centered-bearing design provides greater load-bearing capacity to handle the weight of operator, fuel and high-capacity collector with reserve strength for curb shocks and weight shifts
  • Tough-as-nails powder-coated finish is fusion-bonded for chip and rust resistance

 

Vigilant Operator Presence System™ 

  • Standard, low profile Roll-over Protection System (ROPS) structure with an adjustable seatbelt
  • Dampened steering levers that return to neutral from forward and reverse
  • Interlock switches that shut down the engine when the operator leaves the seat while PTO is engaged or levers are in drive position

 

Ultimate Operator Station™

  • The deep-cushioned, deluxe Premium Comfort Seat features a coil-spring suspension and padded lumbar support with sliding 2-inch fore and aft adjustment for all-day comfort. Iso-mounting eliminates vibration before it reaches the seat, and both padded seat and foldable armrests are covered in scuff-resistant, breathable CoolTemp Cordura® fabric, which dissipates heat and won’t tear or crack with extended use.
  • Operational controls including throttle, choke and angled View-Eze™ console and adjustable cup holder are well positioned for visibility and ease of reach
  • One- or two-handed operation with ComfortReach™ adjustable Hydra-Smooth™ dual levers that automatically return to neutral from either forward or reverse position.

Model 328G4 EFI Specs & Compare

ENGINE  
Type/Horsepower/Cylinders Briggs & Stratton Vanguard Delphi®-based closed-loop Electronic Fuel Injection (EFI) V-Twin
Displacement 49.4 cu. in. (810cc)
Lubrication System Pressure Lube/Filter
Crankshaft Vertical
Cooling System Air
Fuel Gasoline - unleaded
Fuel Capacity 13 U.S. Gal. (49.2 l)
Optional Fuel Capacity NA
Air Cleaner Heavy-duty, cyclonic, remote-mounted engine dual cleaner with replaceable element
Muffler Ultra quiet, single, industrial type.
DURAMAX® DECKS  
DECK DuraMax
Mulching Package # 504567(52), 504569(61), 504571(72)
DURAMAX® DECK SIZE – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck * 
– 61" Deck *
– 72" Deck NA
CUTTING HEIGHT RANGE 1.0 to 5.0 in. (2.5cm to 12.7 cm)
CONSTRUCTION (Robotic-welded steel) Double-layered 10-gauge plus 7-gauge formed-steel laminated spindle plane 0.313 in (7.95 mm) thick- more than 25% thicker than 0.25 in. (6.35 mm) with 7-gauge skirts for geometric strength. Spindle plane is 0.9 in.(22.86 mm) thick in stress zones. Anvil-edge design with 0.5 in. (12.7 mm) reinforcement on front edge of deck.
BLADES (Tempered, alloy steel) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck (3) 18 in. (45.7 cm)
– 61" Deck (3) 21 in. (53.3 cm)
– 72" Deck NA
SPINDLE ASSEMBLIES Sentry™ Spindle System, 2.5 cm (approx. 1 in.) O.D. shaft. Double bearings greasable from top of deck. Spindle head designed to eliminate fiber wrap. Spindle cones shield housing and lower bearings from fiber wrap and dirt ingestion.
SPINDLE HOUSINGS 8 in. (20.3 cm)-diameter housing with 6-bolt pattern. Machined aluminum housing on 52- and 61-inch decks. Cast iron on 72-inch deck.
BLADE DRIVE Belt drive with single Kevlar V-belt and idler arm tensioning.
TRIMABILITY (Outside of std. tire to left trim side) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck NA
– 61" Deck NA
– 72" Deck NA
STARTER & ELECTRICAL SYSTEM  
Battery (maintenance-free) 12 Volt
Starter Solenoid shift
Ignition Breakerless
Interlock System Prevents engine start when PTO clutch is engaged or steering levers are in drive position. Allows operator dismount without engine shutdown only when PTO is disengaged and steering levers are locked in neutral.
ULTIMATE OPERATOR STATION  
Seat Deep-cushioned, deluxe Premium Comfort seat features a coil-spring suspension and padded lumbar support with sliding 2-inch fore and aft adjustment for all-day comfort. Seat and padded, foldable armrests are covered in scuff- and tear-resistant Cordura®.
Suspension InFrame™ suspension with iso-mounted seat and footrest
Console-mounted Instruments Low engine oil pressure, combination electronic fuel gauge/hour meter, engine code light and parking brake warning lights, ignition and push/pull PTO switches.
Work Lights Optional - LED
Hour Meter Combination electronic fuel gauge/hour meter
TRANSMISSION & STEERING  
Type Heavy-duty Hydro-Gear ZT4400 hydrostatic transmissions with cooling fans, integrated transaxles with 12cc piston pumps and 16cc piston motors, gear reduction, internal disc brakes, and 1-3/8-inch axles
Filtration/Hydro Fluid Self-contained fluid and internal filtration. CoolTemp HydroMax® fluid withstands high and low temperature extremes for extended service intervals after 100-hour break-in oil change.
Speed 0 - 10.5 mph (0 - 16.9 kph) forward 0 - 6.0 mph (0 - 9.7 kph) reverse
Turning Radius True zero degree, turns within own length with counter-rotating, independently powered drive wheels.
Steering One- or two-hand operation with adjustable HydraSmooth™ dual levers that automatically return to neutral from either forward or reverse position.
Brakes Dynamic braking through hydrostatic transmission.
Parking Brake Internal disc brake in transmission.
Attachment Drive NA
TIRE SIZES  
MidMount  
Drive Wheels - Standard (4-ply rated) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck 2412x12 turf, 4-ply rated
– 61" Deck 24x12.00x12 turf, 4-ply rated
– 72" Deck NA
Drive Wheels - Optional (4-ply rated) 24x12.00x12 bar tread, 4-ply rated
Front Wheels - All Models 13x6.50x6; rib tread, pneumatic with greasable, double-sealed bearings to protect from grass wrap.
FrontMount  
Drive Wheels - Standard (4-ply rated) NA
Drive Wheels - Optional (4-ply rated) NA
Single Tail Wheel NA
Wide Stance Single Fork Tail Wheel NA
Deck Tires (4-ply rated) – 41" Deck NA
– 42" Deck
– 44" Deck NA
– 48" Deck NA
– 52" Deck NA
– 61" Deck NA
– 72" Deck NA
DIMENSIONS  
Height (Seat Back) 49.5 in. (125.7 cm)
Height (Seat Cushion) 33.0 in (83.8 cm)
Height (ROPS) 70.0 in. (177.8 cm)
Length (midmount w/ DuraMax® Deck - Mowing Position) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck 84.0 in. (213.4 cm)
– 61" Deck 85.0 in. (215.9 cm)
– 72" Deck NA
Length (FrontMount Power Unit + DuraMax® Deck - Folded Up) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck NA
– 61" Deck NA
– 72" Deck NA
Deck Width (Side Discharge) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck 65.5 in. (166.5 cm)
– 61" Deck 74.5 in. (189.2 cm)
– 72" Deck NA
Deck Width (Mulch*) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck 53.5 in.* (135.9 cm)
– 61" Deck 62.5 in.* (158.8 cm)
– 72" Deck NA
FrontMount PowerUnit Only (Width/Length) NA
FrontMount Power Unit (Wheelbase) NA
WEIGHT (Uncrated) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck 1140 lbs (517.1 kg)
– 61" Deck 1190 lbs (539.8 kg)
– 72" Deck NA
FrontMount Power Unit Only (uncrated) NA
FrontMount Deck Only - Side Discharge (uncrated) – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck NA
– 61" Deck NA
– 72" Deck NA
Mulching Package – 41" Deck NA
– 42" Deck NA
– 44" Deck NA
– 48" Deck NA
– 52" Deck 29 lbs. (13.2 kg)
– 61" Deck 36 lbs. (16.3 kg)
– 72" Deck NA
All specifications and information displayed on this Web site are subject to change without notice.