Troubleshooting Guide - Hitachi CS40EM Manual Del Propietário

WARNING
• 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.
Cutter length
■ Guide Bar
• Reverse the bar occasionally to prevent partial wear.

10. Troubleshooting Guide

Case 1. Starting failure
WARNING
• Make sure the icing prevention system is not working.
Check fuel for water
or substandard mix-
ture.
d
Check for engine
flooding.
d
Check spark ignition.
Case 2. Lack of power/Poor acceleration/
Rough idling
Check fuel for water
or substandard mix-
ture.
d
Check air filter and
fuel filter for clog-
ging.
d
Check carburetor
for inadequate ad-
justment.
Filing angle
Side plate angle
Top plate cutting angle
Replace with proper
a
fuel.
Remove and dry the
spark plug.
a
Then pull the starter
again with no choke.
Replace with a new
a
plug.
Replace with proper
a
fuel.
a
Clean.
Readjust speed
a
needles.
• The bar rail should always be square. Check for wear
of the bar rail. Apply a ruler to the bar and the out-
side of a cutter. If a gap is observed between them,
the rail is normal. Otherwise, the bar rail is worn.
Such a bar needs to be corrected or replaced.
Ruler
Gap
No gap
WARNING
Chain tilts
• This saw is equipped with one of the following low
kickback bar/chain combinations:
Bar Size Guide Bar
16 107-72811-200 138-32625-20(21BP-66E)
18 105-72830-201 136-32578-20(21BP-72E)
Case 3. Oil does not come out
Check oil for sub-
standard quality.
d
Check oil passage
and ports for clog-
ging.
If the unit seems to need further service, please consult
with an authorized service shop in your area.
HITACHI Part Number
Saw Chain
a
Replace.
a
Clean.
GB-15
G
B