Troubleshooting, Bar and chain combinations – Homelite UT10548 User Manual

Page 38

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Page 38 — English

TROUBLESHOOTING

Problem

Possible Cause

Solution

Engine will not
start. [Make sure
on/stop switch is
in the

RUN ( l ) po-

sition.]

No spark.


Engine is flooded.


Clean or replace spark plug. Reset spark plug gap. Refer
to

Spark Plug Replacement earlier in this manual.

With the on/stop switch

OFF, remove spark plug. Move

choke lever to

RUN position (pushed in completely) and

pull starter cord 15 to 20 times. This will clear excess
fuel from engine. Clean and reinstall spark plug. Set
on/stop switch to

RUN ( l ) position. Push and fully re-

lease primer bulb 7 times. Pull starter three times with
choke lever at

RUN. If engine does not start, move

choke lever to

FULL CHOKE and repeat normal starting

procedure. If engine still fails to start, repeat procedure
with a new spark plug.

Engine starts but
will not accelerate
properly.

Carburetor requires

“L” (Low Jet)

adjustment.

Contact an authorized service center for carburetor
adjustment.

Engine starts, then
dies.

Carburetor requires

“L” (Low Jet)

adjustment.

Contact an authorized service center for carburetor
adjustment.

Engine starts but
will not run proper-
ly at high speed.

Carburetor requires

“H” (High Jet)

adjustment.

Contact an authorized service center for carburetor
adjustment.

Engine does not
reach full speed
and/or emits ex-
cessive smoke.

Lubricant/fuel
mixture incorrect.

Air filter is dirty.


Carburetor requires

“H” (High Jet)

adjustment.

Use fresh fuel and the correct 2-cycle lubricant mix
ratio.

Clean air filter. Refer to

Cleaning the Air Filter in the

Maintenance section of this manual.

Contact an authorized service center for carburetor
adjustment.

BAR AND CHAIN COMBINATIONS

Chain specifications: 3/8 in. pitch, .05 in. chain gauge

Length of Bar

Guide Bar Part Number

Chain Part Number

Drive Links

14 in.

310625001

901212001

52

16 in.

310626001

901212002

56

18 in.

310627001

671258001

62

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