Husqvarna YTH20B42T 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.

 

 

 

 

 

26

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Contents YTH20B42T General Operation Safety RulesSafe Operation Practices for Ride-On Mowers II. Slope OperationIII. Children ServiceGeneral Service IV. TowingTable 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 PositionHOW to USE Your Tractor StoppingSystem Characteristics 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 Check Engine OIL LevelAutomatic Transmission Warm UP To Start Engine See FigPurge Transmission Mowing Tips Before Each USE MaintenanceLubrication Chart Brake Operation BatteryTractor TiresEngine Spark Plugs CleaningMuffler IN-LINE Fuel Filter See FigTo 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 Problem Cause CorrectionEngine dies when Schematic Tractor - Model NUMBERYTH20B42T 96043002000, Product no 43Electrical KEY Part NO. NO.DESCRIPTION Chassis Tractor - Model NUMBERYTH20B42T 96043002000, Product no 43 Drive KEY Part Description Steering Assembly Engine Seat Assembly Decals Wheels and TiresMower Deck KEY Part NO. NO. Description Mower Lift Service Notes Service Notes Suggested Guide for Sighting Slopes for Safe Operation Warranty Statement
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