Hitachi Koki CS 33EDP Mode D'emploi page 14

English
Remove the air fi lter cover (41) and the fi lter (40).
Rinse them in warm soap suds. Check that the fi lter is dry before
reassembly. An air fi lter that has been used for some time cannot be
cleaned completely. Therefore, it must regularly be replaced with a
new one. A damaged fi lter must always be replaced.
Spark plug (Fig. 35)
The spark plug condition is infl uenced by:
○ An incorrect carburetor setting.
○ Wrong fuel mixture (too much oil in the gasoline)
○ A dirty air fi lter.
○ Hard running conditions (such as cold weather).
These factors cause deposits on the spark plug electrodes, which
may result in malfunction and starting diffi culties. If the engine is
low on power, diffi cult to start or runs poorly at idling speed, always
check the spark plug fi rst. If the spark plug is dirty, clean it and check
the electrode gap. Readjust if necessary. The correct gap is 0.6 mm.
The spark plug should be replaced after about 100 operation hours
or earlier if the electrodes are badly eroded.
NOTE
In some areas, local law requires using a resistor spark plug
to suppress ignition signals. If this machine was originally
equipped with resistor spark plug, use same type of spark plug
for replacement.
Oiler port (Fig. 36)
Clean the chain oiler port (42) whenever possible.
Guide bar (Fig. 37)
Before using the machine, clean the groove and oiler port (43) in the
guide bar.
Side case (Fig. 38)
Always keep the side case and drive area clean of saw dust and
debris. Periodically apply oil or grease to this area to protect from
corrosion as some trees contain high levels of acid.
NOTE
Pull up the front hand guard towards you and release the brake
to remove or install the side case.
Fuel fi lter (Fig. 39)
Remove the fuel fi lter (44) from the fuel tank and thoroughly wash it in
solvent. After that, push the fi lter into the tank completely.
NOTE
If the fuel fi lter (44) is hard due to dust and dirt, replace it.
Chain oil fi lter (Fig. 39)
Remove the oil fi lter (45) and thoroughly wash it in solvent. After that,
push the fi lter into the tank completely.
NOTE
If the oil fi lter (45) is hard due to dust and dirt, replace it.
For long-term storage
Drain all fuel from the fuel tank. Start and let engine run until it stops.
Repair any damage which has resulted from use. Clean the unit with
a clean rag, or the use of high pressure air hose. Put a few drops of
two-cycle engine oil into the cylinder through the spark plug hole,
and spin the engine over several times to distribute oil.
Cover the unit and store it in a dry area.
CHAIN SHARPENING
Parts of a cutter (Fig. 40, 41)
WARNING
○ Gloves should be used when sharpening chain.
○ Be sure to round off the front edge to reduce the chance of
kickback or tie-strap breakage.
46. Top plate
47. Cutting corner
48. Side plate
49. Gullet
50. Heel
51. Chassis
52. Rivet hole
53. Toe
14
54. Depth gauge
55. Correct angle on top plate (degree of angle depends on chain
type)
56. Slightly protruding "hook" or point (curve on non-chisel chain)
57. Top of depth gauge at correct height below top plate
58. Front of depth gauge rounded off
LOWERING DEPTH GAUGES WITH A FILE
WARNING
○ Do not smoothen the upper part of the bumper drive links (59)
with a fi le or deform them. (Fig. 42)
○ Adjust the depth gauge to the specifi ed setting.
Failure to observe the above raises the possibility of a kickback
and may result in injury.
1) If you sharpen your cutters with a fi le holder, check and lower the
depth.
2) Check depth gauges every third sharpening.
3) Place depth gauge tool on cutter. If depth gauge projects, fi le
it level with the top of the tool. Always fi le from the inside of the
chain toward an outside cutter. (Fig. 43)
4) Round off front corner to maintain original shape of depth gauge
after using depth gauge tool. Always follow the recommended
depth gauge setting found in the maintenance or operator
manual for your chain saw. (Fig. 44)
GENERAL INSTRUCTIONS FOR FILING CUTTERS
File (60) cutter on one side of the chain from the inside out. File on
forward stroke only. (Fig. 45)
5) Keep all cutters the same length. (Fig. 42)
6) File enough to remove any damage to cutting edges (side plate
(61) and top plate (62)) of cutter. (Fig. 46)
SHARPENING ANGLES FOR SHARPENING SAW CHAIN
1. Part Number
2. Pitch
3. Depth Gauge Setting
4. Side Plate Filing Angle
5. Top Plate Angle
6. File Guide Angle
Maintenance schedule
Below you will fi nd some general maintenance instructions. For
further information please contact Hitachi Authorized Service
Centers.
Inspection and service before use
○ Check that no peel-off , degradation, or damage is observed in
the Anti-Vibration rubber members, and no loosening or damage
is observed in their fi xtures.
○ Check that no damage is observed in the Anti-Vibration springs,
and no loosening or damage is observed in their fi xtures.
○ Check that no deformation or damage is observed in the front
and rear handles.
○ Check that the fi xtures for front and rear handles are suffi ciently
tightened and free of damage.
○ Check that bolts, nuts, etc. used for each part are suffi ciently
tightened and free of damage.
Daily maintenance
○ Clean the exterior of the unit.
○ Clean the chain oil fi lter port.
○ Clean the groove and oiler port in the guide bar.
○ Clean the side case of saw dust.
○ Check that the saw chain is sharp.
○ Check that the guide bar clamp nuts are suffi ciently tightened.
○ Make sure that the guide bar cover is undamaged and that it can
be securely fi tted.
91PX
3/8"
0.025"
80°
30°
90°