300 Series Powerful Zero Turn Mowers
337G5 EFI Fuel-Efficient Zero-Turn Lawn Mower

337G5 EFI Fuel-Efficient Zero-Turn Lawn Mower

Offering unparalleled performance and fuel economy, the Model 337G5 EFI features a closed-loop Electronic Fuel Injection (EFI) engine that continually adjusts the fuel ratio to use less fuel, provide reliable hot and cold starts, reduce emissions and minimize fuel-induced service issues.

B&S VANGUARD ELECTRONIC FUEL INJECTION (EFI) ENGINE
993 cc V-Twin B&S Vanguard Delphi® based Electronic Fuel Injection (EFI) OHV gasoline engine with horizontal crankshaft and pressure lube run cooler and provide longer service life 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 TRANSMISSION
The G5 Hydro-Gear ZT-5400 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, 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® 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.
WARRANTY
• Commercial Use: 3-year or 1,250-hour (whichever comes first); limited warranty: First two years covering parts and labor, last year covering parts only. • Residential Use: 4-year or 800-hour (whichever comes first); limited warranty: First two years covering parts and labor, last two years covering parts only.
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
REDUCED MAINTENANCE
Only two Access-Eze™ lubrication points cut maintenance time up to 95% Self-tensioning belts minimize cost and labor on routine maintenance
PREMIER SUSPENSION SEAT
Premier Suspension Seat provides the ultimate in operator comfort. Low-profile seat slides fore and aft and includes an integrated shock absorber that manually adjusts to operators between 100 – 300 lbs. Other ergonomic features include a backrest that tilts from -5 degrees to +30 degrees, a lumbar support mechanism, adjustable armrests and a retractable seat belt.
LED work lights provide improved visibility in low light situations.
ULTIMATE OPERATOR STATION®
Operational controls including throttle, choke and angled View-Eze™ console and adjustable cup holder are well positioned for visibility and ease of reach
ULTIMATE OPERATOR STATION®
One- or two-handed operation with QuikAjust Tilt™ dual levers with 9-inch comfort range to custom fit operator's reach. Levers automatically return to neutral from either forward or reverse position and are less strenuous than riding mowers with steering wheels.
PREMIER SUSPENSION SEAT
Premier Suspension Seat provides the ultimate in operator comfort. Low-profile seat slides fore and aft and includes an integrated shock absorber that manually adjusts to operators between 100 – 300 lbs. Other ergonomic features include a backrest that tilts from -5 degrees to +30 degrees, a lumbar support mechanism, adjustable armrests and a retractable seat belt.
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
WIDE SEAT CONVERSION KIT
Provides additional seating room for larger operators or to accommodate cell phones or pagers. Requires seat belt extension.
Michelin® X® Tweel® Airless Turf Tire
Optional 24x12.00x12 turf-tread drive tire for MidMount™ models equipped with 61- or 72-inch decks, performs like a pneumatic tire but without the inconvenience and downtime associated with flat tires. Provides consistent hub height to ensure the mower deck produces an even cut and excellent lateral stability and outstanding operator comfort. Not for use with PowerVac Collection Systems.
Michelin® X® Tweel® Airless Front Caster Tire
Smooth tread, 13x6.50x6 caster wheel. Performs like a pneumatic tire, but without the inconvenience and downtime associated with flats. Not for use with PowerVac Collection Systems, or with DuraFlex Suspension Forks.
FOLDABLE ROPS
The Foldable ROPS allows the two-post ROPS to be lowered for mowing under low-hanging trees and other overhead obstacles, or for storing and transporting in enclosed trailers with low door clearance. CAUTION: Avoid drop-offs, embankments and steep slopes. Do not allow ROPS to provide a false pretense of security in hazardous areas and avoid questionable conditions. Always wear seatbelt when Foldable ROPS is in up-right position. When Foldable ROPS is down, DO NOT use seat belt, and drive with extra caution.
SUNSHADE CANOPY VINYL
Lightweight, water repellent, UV-resistant vinyl canopy mounts easily to OPS or ROPS to limit exposure to direct sunlight, reducing eye strain and increasing operator comfort.
SUNSHADE CANOPY ALUMINUM
Diamond-plated aluminum canopy is highly resistant to abrasions. Easily mounts to ROPS to increase operator comfort by limiting exposure to direct sunlight and reducing eye strain.
YELLOW BEACON LIGHT
Yellow beacon attaches to OPS or ROPS to provide greater visibility in high-traffic areas.
DOWN DISCHARGE™ MULCHING PACKAGE
The optional Down Discharge™ mulching package with GrassMax™ medium-lift blades cuts and recuts clippings and directs them deep into the grass bed, enriching turf and producing a beautifully manicured cut.

Engine

72" 337G561" 337G5
Engine TypeB&S Vanguard, Delphi®-based closed-loop Electronic Fuel Injection(EFI)/V-TwinB&S Vanguard, Delphi®-based closed-loop Electronic Fuel Injection(EFI)/V-Twin
Displacement60.6 cu. in. (993 cc)60.6 cu. in. (993 cc)
LubricationPressure Lube/FilterPressure Lube/Filter
CrankshaftVerticalVertical
Engine CoolingAirAir
Fuel TypeGasoline - unleadedGasoline - unleaded
Fuel Capacity13 U.S. Gal. (49.2 l)13 U.S. Gal. (49.2 l)
Optional Fuel CapacityNANA
Air CleanerHeavy-duty, remote mounted, cyclonic, dual element with replaceable element.Heavy-duty, remote mounted, cyclonic, dual element with replaceable element.
MufflerUltra quiet, single, industrial type.Ultra quiet, single, industrial type.

DuraMax Decks

72" 337G561" 337G5
DuraMax® DeckDuraMax®DuraMax®
Mulch Kit #504571504569
Deck Size72"61"
Cutting Height Range1.0 to 5.0 in. (2.5cm to 12.7 cm)1.0 to 5.0 in. (2.5cm to 12.7 cm)
Deck ConstructionDouble-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.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.
Deck Blades(3) 25 in. (63.5 cm)(3) 21 in. (53.3 cm)
Deck SpindlesSentry™ 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.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 Housing8 in. (20.3 cm)-diameter housing. Machined aluminum housing on 52- and 61-inch deck. Cast iron on 72-inch deck.8 in. (20.3 cm)-diameter housing. Machined aluminum housing on 52- and 61-inch deck. Cast iron on 72-inch deck.
Blade DriveBelt drive with single Kevlar V-belt and idler arm tensioning.Belt drive with single Kevlar V-belt and idler arm tensioning.
Deck TrimabilityNANA

Starter & Electrical System

72" 337G561" 337G5
Battery12 Volt12 Volt
StarterSolenoid shiftSolenoid shift
IgnitionBreakerlessBreakerless
Interlock SystemPrevents 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.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

72" 337G561" 337G5
Operator SeatPremier Suspension Seat provides the ultimate in operator comfort. Low-profile seat slides fore and aft and includes an integrated shock absorber that manually adjusts to operators between 100 – 300 lbs. Other ergonomic features include a backrest that tilts from -5 degrees to +30 degrees, a lumbar support mechanism, adjustable armrests and a retractable seat belt.Premier Suspension Seat provides the ultimate in operator comfort. Low-profile seat slides fore and aft and includes an integrated shock absorber that manually adjusts to operators between 100 – 300 lbs. Other ergonomic features include a backrest that tilts from -5 degrees to +30 degrees, a lumbar support mechanism, adjustable armrests and a retractable seat belt.
SuspensionInFrame™ suspension with iso-mounted seat and footrestInFrame™ suspension with iso-mounted seat and footrest
Console-mounted InstrumentsLow engine oil pressure, engine code light and parking brake warning light, combination electronic fuel gauge/hour meter, ignition and push/pull PTO switches.Low engine oil pressure, engine code light and parking brake warning light, combination electronic fuel gauge/hour meter, ignition and push/pull PTO switches.
Work LightsLEDLED
Hour Meter/Fuel GaugeStandardStandard

Transmission & Steering

72" 337G561" 337G5
Transmission TypeThe G5 Hydro-Gear ZT-5400 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, reducing costs and maintenance time.The G5 Hydro-Gear ZT-5400 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, reducing costs and maintenance time.
Transmission FiltrationSelf-contained fluid and internal filtration. CoolTemp Hydro-Max fluid withstands high and low temperature extremes for extended service intervals.Self-contained fluid and internal filtration. CoolTemp Hydro-Max fluid withstands high and low temperature extremes for extended service intervals.
Speeds0 - 11.0 mph (0 - 17.7 kph) forward 0 - 6.0 mph (0 - 9.7 kph) reverse0 - 11.0 mph (0 - 17.7 kph) forward 0 - 6.0 mph (0 - 9.7 kph) reverse
Turning RadiusTrue zero degree, turns within own length with counter-rotating, independently powered drive wheels.True zero degree, turns within own length with counter-rotating, independently powered drive wheels.
SteeringOne- or two-hand operation with adjustable QuikAjust Tilt™ dual levers that automatically return to neutral from either forward or reverse position.One- or two-hand operation with adjustable QuikAjust Tilt™ dual levers that automatically return to neutral from either forward or reverse position.
BrakesDynamic braking through hydrostatic transmission.Dynamic braking through hydrostatic transmission.
Parking BrakeInternal disc brake in transmissionInternal disc brake in transmission
Attachment DriveNANA

Tire Sizes

72" 337G561" 337G5
Standard Midmount Drivetire26x12.00x12 turf, 6-ply rated26x12.00x12 turf, 6-ply rated
Optional MidMount™Drive Tires24x12.00x12 bar tread, 4-ply rated24x12.00x12 bar tread, 4-ply rated
MidMount™ Front Caster Wheels13x6.50x6; rib tread, pneumatic with greasable, double-sealed bearings to protect from grass wrap.13x6.50x6; rib tread, pneumatic with greasable, double-sealed bearings to protect from grass wrap.
Standard FrontMount™ Drive TireNANA
Optional FrontMount™ Drive TireNANA
FrontMount™ Single Frok Tail Wheel SizeNANA
FrontMount™ Wide Stance Single Fork Tail Wheel SizeNANA
FrontMount Deck Tire

Dimensions

72" 337G561" 337G5
Height, Seatback49.0 in. (124.5 cm)49.0 in. (124.5 cm)
Height Seat Cushion35.0 in. (88.9 cm)35.0 in. (88.9 cm)
Height ROPS72.0 in. (182.9 cm)72.0 in. (182.9 cm)
Mower+Deck Length89.0 in. (226.9 cm)85.0 in. (215.9 cm)
Mower+Deck - Deck Folded
Deck Width - Side Discharge85.5 in. (217.2 cm)74.5 in. (189.2 cm)
Deck Width - Side Discharge 41"NANA
Deck Width - Side Discharge 42"NANA
Deck Width - Side Discharge 48"NANA
Deck Width - Side Discharge 52"NANA
Deck Width - Side Discharge 61"74.5 in. (189.2 cm)74.5 in. (189.2 cm)
Deck Width - Side Discharge 72"85.5 in. (217.2 cm)85.5 in. (217.2 cm)
Deck Width - Mulching73.5 in.* (186.7 cm)62.5 in.* (158.8 cm)
FrontMount™ WidthNANA
FrontMount™ WheelbaseNANA

Weight

72" 337G561" 337G5
Weight Power Unit+Deck (uncrated)1340 lbs. (607.8 kg)1260 lbs. (539.8571.2 kg)
Weight FrontMount™ Power Unit onlyNANA
Weight Mower Deck
Weight Mulch Kit44 lbs. (20.0 kg)36 lbs. (16.3 kg)
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