Husqvarna YTH20F42T owner manual Engine dies when

Page 26

TROUBLESHOOTING POINTS

PROBLEM

CAUSE

CORRECTION

 

 

 

 

 

Engine dies when

1.

Reverse operation system

1.

Turn ignition key to

tractor is shifted

 

(ROS) is not "ON" while

 

ROS "ON" position.

into reverse

 

mower or other attachment

 

See Operation section.

 

 

is engaged.

 

 

 

 

 

 

 

Engine continues to run

1.

Faulty operator-safety presence control system.

1.

Check wiring, switches and connections. If not

when operator leaves seat

 

 

 

corrected, contact an authorized service center/

with attachment clutch

 

 

 

department.

engaged

 

 

 

 

 

 

 

 

 

Poor cut - uneven

1.

Worn, bent or loose blade.

1.

Replace blade. Tighten blade bolt.

 

2.

Mower deck not level.

2.

Level mower deck.

 

3.

Buildup of grass, leaves, and trash under mower.

3.

Clean underside of mower housing.

 

4.

Bent blade mandrel.

4.

Replace blade mandrel.

 

5.

Clogged mower deck vent holes from buildup of

5.

Clean around mandrels to open vent holes.

 

 

grass, leaves, and trash around mandrels.

 

 

 

 

 

 

 

Mower blades will not

1.

Obstruction in clutch mechanism.

1.

Remove obstruction.

rotate

2.

Worn/damaged mower drive belt.

2.

Replace mower drive belt.

 

3.

Frozen idler pulley.

3.

Replace idler pulley.

 

4.

Frozen blade mandrel.

4.

Replace blade mandrel.

 

 

 

 

 

Poor grass discharge

1.

Engine speed too slow.

1.

Place throttle control in “FAST” position.

 

2.

Travel speed too fast.

2.

Shift to slower speed.

 

3.

Wet grass.

3.

Allow grass to dry before mowing.

 

4.

Mower deck not level.

4.

Level mower deck.

 

5.

Low/uneven tire air pressure.

5.

Check tires for proper air pressure.

 

6.

Worn, bent or loose blade.

6.

Replace blade. Tighten blade bolt.

 

7.

Buildup of grass, leaves and trash under mower.

7.

Clean underside of mower housing.

 

8.

Mower drive belt worn.

8.

Replace mower drive belt.

 

9.

Blades improperly installed.

9.

Reinstall blades sharp edge down.

 

10.

Improper blades used.

10.

Replace with blades listed in this manual.

 

11.

Clogged mower deck vent holes from buildup of

11.

Clean around mandrels to open vent holes.

 

 

grass, leaves, and trash around mandrels.

 

 

 

 

 

 

 

Headlight(s) not working

1.

Light switch is “OFF”.

1.

Turn light switch “ON”.

(if so equipped)

2.

Bulb(s) or lamp(s) burned out.

2.

Replace bulb(s) or lamp(s).

 

3.

Faulty light switch.

3.

Check/replace light switch.

 

4.

Loose or damaged wiring.

4.

Check wiring and connections.

 

5.

Blown fuse.

5.

Replace fuse.

 

 

 

 

 

Battery will not charge

1.

Bad battery cell(s).

1.

Replace battery.

 

2.

Poor cable connections.

2.

Check/clean all connections.

 

3.

Faulty regulator (if so equipped).

3.

Replace regulator.

 

4.

Faulty alternator.

4.

Replace alternator.

 

 

 

 

 

Loss of drive

1.

Freewheel control in “disengaged” position.

1.

Place freewheel control in “engaged” position.

 

2.

Motion drive belt worn, damaged, or broken.

2.

Replace motion drive belt.

 

3.

Air trapped in transmission during shipment

3.

Purge transmission.

 

 

or servicing.

 

 

 

 

 

 

 

Engine “backfires” when

1.

Engine throttle control not set between half and

1.

Move throttle control between half and full speed

turning engine “OFF”

 

full speed (fast) position before stopping engine.

 

(fast) position before stopping engine.

 

 

 

 

 

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Contents YTH20F42T General Operation Safety RulesSafe Operation Practices for Ride-On Mowers II. Slope OperationIV. Towing ServiceIII. Children Table of Contents To Remove Tractor from Carton AssemblyUnassembled Parts Unpack CartonCheck for Proper Position of ALL Belts Check Tire PressureCheck Deck Levelness Check Brake SystemOperation Know Your Tractor Reverse Operation System ROS on PositionStopping HOW to USE Your TractorTo SET Parking BRAKESee Fig To USE Throttle Control D See FigTo USE Cruise Control -J See Fig To Adjust Mower Cutting Height See FigTo Adjust Gauge Wheels See Fig To Operate MowerTo Operate on Hills Service REMINDER/HOUR MeterBefore Starting the Engine To Transport See FigsPurge Transmission ADD GasolineTo Start Engine See Fig Automatic Transmission Warm UPMowing Tips Maintenance Before Each USEBrake Operation BatteryTractor TiresEngine Muffler CleaningEngine OIL Filter Spark PlugsTo Remove Mower See Fig Service and AdjustmentsTo Install Mower See Figs To Level Mower Mower Drive Belt Removal Mower Drive Belt InstallationTo Replace Mower Drive Belt See Fig Front Wheel TOE-IN/CAMBER To Replace Motion Drive Belt See FigTo Check Brake To Remove Wheel for Repairs See FigTo Replace Headlight Bulb Replacing Battery See FigTo Start Engine with a Weak Battery See Fig Interlocks and RelaysTo Adjust Choke Control To Remove Hood and Grill Assembly See FigTo Adjust Throttle Control Cable To Adjust CarburetorFuel System StorageOther Engine OILTroubleshooting Points Engine dies when Schematic Tractor Model NO. YTH20F42T 96043000500, Product no 43Electrical KEY Part NO. NO. Description Chassis KEY Part Description Drive KEY Part NO. NO. Description Steering Assembly Tractor Model NO. YTH20F42T 96043000500, Product no 43 Seat Assembly Decals Wheels and TiresEngine KEY Part NO. NO. Description Mower Deck KEY Part Description Mower Lift Suggested Guide for Sighting Slopes for Safe Operation Only Ride UP and Down Hill Not Across Hill Degrees MAXWarranty Statement

YTH20F42T specifications

The Husqvarna YTH20F42T is a versatile and efficient riding lawn mower designed to meet the demands of residential lawn care. With its robust construction and user-friendly features, this model has gained popularity among homeowners looking for a reliable mowing solution.

At the heart of the YTH20F42T is a powerful 20 horsepower Kohler engine, providing ample power to tackle various terrain types. This engine not only ensures efficient mowing but also enhances overall durability and longevity. The automatic hydrostatic transmission allows for seamless speed adjustments and smooth transitions, making it easy to navigate around obstacles and varying landscape features.

One standout feature of the Husqvarna YTH20F42T is its 42-inch cutting deck, which strikes an ideal balance between maneuverability and cutting capacity. This deck size allows users to cover more ground in less time, making it suitable for medium to large-sized yards. The cutting height can be easily adjusted from 1.5 to 4 inches, giving users the flexibility to achieve their desired lawn appearance.

The mower is equipped with a washout port, facilitating quick and simple cleaning of the cutting deck. This feature enhances the mower’s maintenance routine, ensuring it operates efficiently and prolonging the life of the blades. Additionally, the mulching capability allows for nutrient recycling, promoting a healthier lawn while reducing the need for bagging grass clippings.

Comfort is not overlooked in the design of the YTH20F42T. It features an ergonomic seat with good back support, designed to keep users comfortable even during extended mowing sessions. The steering wheel is also positioned for easy access and control, enhancing the overall user experience.

Safety features, such as the automatic shutoff when the operator leaves the seat, provide peace of mind while operating the mower. The headlights ensure visibility during early morning or late evening mowing, making this mower a reliable choice any time of day.

In summary, the Husqvarna YTH20F42T combines power, efficiency, and comfort, making it an excellent choice for homeowners looking to maintain their lawns with ease. From its reliable engine to innovative features, this riding mower stands out as a go-to solution for effective lawn care.
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