Craftsman 917.77341 owner manual Troubleshooting Chart Problem Cause Correction, Fast

TROUBLESHOOTING

CHART

PROBLEM

CAUSE

CORRECTION

Does

not

start

1.

Dirty air filter.

1.

Clean/replace

air filter.

2.

Out of fuel.

2.

Fill fuel

tank.

3.

Stale

fuel.

3. Drain tank and refill with

fresh

clean

fuel.

4.

Water

in fuel.

4. Drain

fuel

tank

and

carburetor

and

refill

tank

with fresh

gasoline.

.

Spark

.plug wire

is

5.

Connect

wire

to

plug.

disconnected.

6.

Bad

spark

plug.

lever not

6.

Replace

spark

plug.

7.

Throttle

control

7.

Move

throttle

lever to

FAST

in correct

position

position.

(if

equipped).

Loss of power

1.

Dirty

air

filter.

1.

Clean/replace

a_r filter.

2.

Buildup

of

grass,

leaves,

2.

Clean

underside

of

trimmer

and

trash under trimmer.

and trimmer

head.

3

Too

much

oil

in

engine.

3.

Check

oil

level.

4.

Walking

speed

too

fast.

4.

Trim at

slower

walking

speed.

Excessive

1.

Lines

uneven

or

broken.

1.

Check

trimmer

lines.

Vibration

2.

Loose

nuts or bolts.

2.

Check

all

hardware,

3.

including

engine

bolts.

Damaged

tnmmer

head.

3.

Check/repair

trimmer

head.

Starter rope hard

1.

Bent

engine

crankshaft.

1.

Contact

a Sears

or other

to pull

qualified

service

center.

Loss

of head

1.

Belt

not

driving.

1.

Put belt

on

pulleys

or

drive

replace

belt

if broken.

Poor

trimming

1. Trimmer

line

length

is

1.

If line

is worn

or

broken to

performance

too

short.

half original

length,

2.

replace

line.

Throttle

control

lever not

2.

Move

throttle

lever

to

FAST

in

correct

position

position.

(if

equipped).

Trimmer

head

1.

Trimmer

line

not

1.

Follow

instructions

in

does

not

properly

installed.

Maintenance

section.

retain

line

2.

Broken

line retainer

clip.

2.

Replace

string

carrier

plate

3.

Incorrect size

assembly.

of

3.

Use .130

diameter

trimmer

line.

trimmer

line.

15