Hitachi CS 40EA Technical Data And Service Manual

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This section describes repair, focusing on portions requiring frequent repair. Refer to TROUBLE
SHOOTING GUIDE in the previous section as the context for the following descriptions.
1. Precautions on Maintenance, Inspection and Repair
• The fuel used readily ignites; therefore, never bring the product near a flame.
• Use new gaskets at reassembly.
• Prior to disassembly for repair, remove the fuel and chain oil into separate containers, and allow the
engine to cool down.
• During repair, startup or running, use adequate care for portions posing the risk of burn injury or electric
shock, such as hot areas including the muffler, high voltage cord and spark plug.
• Before running the product with the chain bar and chain blades attached, make sure that there are no
other people nearby.
• Ensure proper ventilation when performing repair in a small room or other poorly ventilated space.
• After completing repair, always return the throttle lever to the idling position and set the stop switch to the
engine stop position.
2. Inspection Standards and Spark Plug Replacement
Model
Item
CS 40EA (S)
CS 40EA (PS)
Idling revolutions
min
-1
(rev./min)
2,900 to 3,300
No-load maximum revolutions
(with guide bar and chain blades)
min
-1
(rev./min)
13,000
Clutch engagement
min
-1
(rev./min)
3,900 to 4,700
Accelerating performance - Smooth acceleration
Gap between magneto rotor
and ignition coil
mm 0.3 to 0.4
Spark plug - NGK BPMR7A
Gap between spark plug
electrodes
mm 0.6 to 0.7
Height of carburetor metering lever -
Position 1.65 mm lower than
carburetor body surface
Chain blade type - OREGON 95VP
Chain blade pitch x gauge inch 0.325 x 0.050
No. of chain blade drive links - 56 (13”) , 64 (15”) , 66 (16”) , 72 (18”)
REPAIR AND MAINTENANCE GUIDE
REPAIR GUIDE

Hitachi CS 40EA Specifications

General

Brand	Hitachi
Model	CS 40EA
Category	Chainsaw
Language	English