Husqvarna LTH18538 owner manual Troubleshooting, start, clicks, will, Loss of power

TROUBLESHOOTING

PROBLEM

CAUSE

CORRECTION

Will

not

start

1.

Out of fuel.

1.

Fill fuel

tank.

2.

Engine

not "CHOKED" properly.

2.

See "TO START ENGINE"

in Operation

section.

3.

Engine

flooded.

3.

Wait several minutes before attempting

to start.

4.

Bad spark

plug.

4.

Replace

spark

plug.

5.

Dirty

air filter.

5.

Clean/replace

air filter.

6.

Dirty

fuel

filter.

6.

Replace

fuel filter.

7.

Water

in fuel.

7.

Empty fuel tank and carburetor,

refill

tank with fresh

gasoline and replace fuel filter.

8.

Loose

or damaged

wiring.

8.

Check

all wiring.

9.

Carburetor

out of adjustment.

9.

See "To Adjust

Carburetor"

in Service

Adjustments

section.

10.

Engine valves

out of adjustment.

10.

Contact

an authorized

service

center/department.

Hard

to

start

1.

Dirty air filter.

1.

Clean/replace

air filter.

2.

Bad spark

plug.

2.

Replace

spark

plug.

3.

Weak

or dead

battery.

3.

Recharge

or replace battery.

4.

Dirty

fuel

filter.

4.

Replace

fuel filter.

5.

Stale

or

dirty fuel.

5.

Empty fuel tank and refill tank with fresh, clean gas.

6.

Loose

or damaged

wiring.

6.

Check

all wiring.

7.

Carburetor

out of adjustment.

7.

See "To Adjust

Carburetor"

in Service

Adjustments

section.

8.

Engine valves

out of adjustment.

8.

Contact

an authorized

service

center/department.

Engine

will not

1.

Brake pedal

not depressed.

1.

Depress

brake

pedal.

2.

Attachment

clutch

is engaged.

2.

Disengage

attachment

clutch.

turn

over

3.

Weak

or dead

battery.

3.

Recharge

or replace battery.

4.

Blown

fuse.

4.

Replace

fuse.

5.

Corroded

battery terminals.

5.

Clean

battery

terminals.

6.

Loose

or damaged

wiring.

6.

Check

all wiring.

7.

Faulty

ignition

switch.

7.

Check/replace

ignition

switch.

8.

Faulty

solenoid

or starter.

8.

Check/replace

solenoid

or starter.

9.

Faulty operator presence switch(es).

9.

Contact

an authorized

service

center/department.

Engine

clicks

but

1.

Weak

or dead

battery.

1.

Recharge

or replace battery.

2.

Corroded

battery terminals.

2.

Clean

battery

terminals.

will

not

start

3.

Loose

or damaged

wiring.

3.

Check

all wiring.

4.

Faulty

solenoid

or starter.

4.

Check/replace

solenoid

or starter.

Loss of power

Excessive

vibration

1.

Cutting too much grass/too fast.

1.

Raise

cutting height/reduce

speed.

2.

Throttle

in "CHOKE"

position.

2.

Adjust

throttle

control.

3.

Build-up

of grass, leaves, trash under mower.

3.

Clean

underside

of mower

housing.

4.

Dirty air filter.

4.

Clean/replace

air filter.

5.

Low oil level/dirty

oil.

5.

Check

oil level/change

oil.

6.

Faulty spark

plug.

6.

Clean and regap or change spark plug.

7.

Dirty fuel

filter.

7.

Replace fuel filter.

8.

Stale

or

dirty

fuel.

8.

Empty fuel tank and refill tank with fresh, clean gas.

9.

Water

in fuel.

9.

Empty

fuel tank and carburetor,

refill

tank with fresh

gasoline and replace fuel filter.

10.

Spark

plug wire

loose.

10.

Connect and tighten spark

plug

wire.

11.

Dirty engine

air screen/fins.

11.

Clean

engine air

screen/fins.

12.

Dirty/clogged

muffler.

12.

Clean/replace

muffler.

13.

Loose or damaged

wiring.

13.

Check

all wiring.

14.

Carburetor

out of adjustment.

14.

See "To Adjust

Carburetor"

in Service

Adjustments

15.

Engine valves out of adjustment.

15.

Contact an authorized

service center/department.

1.

Worn,

bent

or loose

blade.

1.

Replace blade. Tighten blade bolt.

2.

Bent blade

mandrel.

2.

Replace blade

mandrel.

3.

Loose/damaged

part(s).

3.

Tighten

loose

part(s).

Replace

damaged parts.

26