Zenoah GZ400 - Manual (Page 14)

GZ400
GB-14
10. Troubleshooting Guide
Case 1. Starting failure
Make sure the icing prevention system is not work-
ing.
Check fuel for water or
substandard mixture. Replace with proper
fuel
.
C h e c k f o r e n g i n e
flooding.
Check spark ignition.
Remove and dry the
spark plug.
Then pull the starter
again with no choke.
Replace with a new
plug.
Case 2. Lack of power/Poor acceleration/
Rough idling
Case 3. Oil does not come out
Check fauel for water
or substandard mix-
ture.
Check air filter and fuel
filter for clogging.
Check carburetor for
inadequate adjust-
ment.
If the unit seems to need further service, please consult
with an authorized service shop in your area.
Replace with proper
fuel.
Clean.
Readjust speed
needles.
Check oil for substan-
dard quality.
Check oil passage and
ports for clogging.
Replace.
Clean.
a
d
d
a
a
d
d
a
a
a
d
a
a
Be sure to round off the front edge to reduce the
chance of kickback or tie-strap breakage.
Make sure every cutter has the same length and edge angles
as illustrated.
■ Guide Bar
•
Reverse the bar occasionally to prevent partial wear.
• The bar rail should always be square. Check for wear of
the bar rail. Apply a ruler to the bar and the outside of a
cutter. If a gap is observed between them, the rail is nor-
mal. Otherwise, the bar rail is worn. Such a bar needs to
be corrected or replaced.
Cutter length
Filing angle
Side plate angle
Ruler
Gap
No gap
Chain tilts
WARNING:
This saw is equipped with one of the following low kickback
bar/chain combinations:
Zenoah Part Number
Saw Model Bar Size Guide Bar Saw Chain
GZ400 16" 16-10-N1-MHC UNB G N1C-BL-M-57E SK
9. Storage
Aged fuel is one of major causes of engine starting failure. Before storing the unit, empty the fuel tank and run the engine until it
uses all the fuel left in the fuel line and the carburetor. Store the unit indoor taking necessary measures for rust prevention.