Bar And Chain Combinations; Troubleshooting - Homelite UT10680 Operator's Manual

BAR AND CHAIN COMBINATIONS

Chain specifications: 3/8 in. pitch, .05 in. chain gauge
Length of Bar
14 in.
16 in.
18 in.
Problem
Engine will not
start. [Make sure
on/stop switch is
in the RUN ( l ) po-
sition.]
Engine starts but
will not accelerate
properly.
Engine starts, then
dies.
Engine starts but
will not run proper-
ly at high speed.
Engine does not
reach full speed
and/or emits ex-
cessive smoke.
Guide Bar Part Number
310625001
310626001
310627001

TROUBLESHOOTING

Possible Cause
No spark.
Engine is flooded.
Carburetor requires
"L" (Low Jet)
adjustment.
Carburetor requires
"L" (Low Jet)
adjustment.
Carburetor requires
"H" (High Jet)
adjustment.
Lubricant/fuel
mixture incorrect.
Air filter is dirty.
Carburetor requires
"H" (High Jet)
adjustment.
Page 38 — English
Chain Part Number
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.
Contact an authorized service center for carburetor
adjustment.
Contact an authorized service center for carburetor
adjustment.
Contact an authorized service center for carburetor
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.
Drive Links
901212001
901212002
671258001
Solution
52
56
62