Husqvarna LTH18538 Troubleshooting, Poor cut =uneven, working, if so equipped, ing engine OFF

TROUBLESHOOTING

PROBLEM				CAUSE	CORRECTION
Engine		continues		1. Faulty operator-safety presence control	1. Check wiring, switches and connections.	If not
to run		when	oper=	system.	corrected, contact an authorized service	center/
ator	[eaves		seat		department.
with	attachment
clutch		engaged

Poor cut =uneven

Mower blades wi[[

not rotate

Poor grass

discharge

Headlight(s) not

working

(if so equipped)

Battery wii[ not

charge

Loss of drive

Engine "back- fires" when turn=

ing engine "OFF"

Engine dies when tractor is shifted

into reverse

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, trash under

mower.

3.

Clean

underside

of mower

housing.

4.

Bent blade mandrel.

4.

Replace

blade mandrel.

5.

Clogged

mower

deck vent holes from

5.

Clean

around

mandrels

to open vent holes.

buildup of grass, leaves, and trash around

mandrels.

1.

Obstruction

in clutch mechanism.

1.

Remove

obstruction.

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.

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, 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 parts manual.

11.Ctoggedmowerdeckventhotesfrombuildup 11. Clean around mandrels to open vent holes. of grass, leaves, trash around mandrels.

1.

Switch

is "OFF".

1.

Turn switch

"ON".

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.

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.

1.

Freewheel

control

in "disengaged"

position.

1.

Place freewheel

control

in "engaged" position.

2.

Debris

on steering

plate (if equipped).

2.

See "CLEANING"

in the

maintenance

section.

3.

Motion drive belt worn, damaged,

or broken.

3.

Replace

motion

drive

belt.

4.

Air trapped

in transmission

during

4.

Purge

transmission.

shipment

or servicing.

5.

Axle key

missing.

5.

Install axle key at rear wheel.

See "TO REMOVE

WHEEL" in the Service and Adjustments section.

1.

Engine

throttle

control not set between

1.

Move

throttle

control

between

half and

full speed

half and full

speed

(fast) position

before

(fast)

position

before

stopping

engine.

stopping

engine.

1.

Reverse operation

system

(ROS)

is not"ON"

1.

Turn ignition

key to ROS "ON" position.

See

while mower or other attachment is engaged.

Operation

section.

27