Hitachi CS 33EDT Handling Instructions Manual page 14

English
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.
47. Top plate
48. Cutting corner
49. Side plate
50. Gullet
51. Heel
52. Chassis
53. Rivet hole
54. Toe
55. Depth gauge
56. Correct angle on top plate (degree of angle depends on chain type)
57. Slightly protruding "hook" or point (curve on non-chisel chain)
58. Top of depth gauge at correct height below top plate
59. Front of depth gauge rounded off
LOWERING DEPTH GAUGES WITH A FILE
WARNING
○ Do not smoothen the upper part of the guard tie straps (60) or
bumper drive links (61) 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 (62) 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
(63) and top plate (64)) 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.
14
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 oil fi lter 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 nut is suffi ciently tightened.
○ Make sure that the guide bar cover is undamaged and that it can
be securely fi tted.
○ Check that nuts and screws are suffi ciently tightened.
○ Check the tip of the guide bar. Please exchange it for the new
one when it is worn out.
○ Check the band of chain brake. Please exchange it for the new
one when it is worn out.
○ Clean the air fi lter.
Weekly maintenance
○ Check the recoil starter, especially cord.
○ Clean the exterior of the spark plug.
○ Remove the spark plug and check the electrode gap. Adjust it to
0.6 mm or change the spark plug.
○ Check that the air intake at the recoil starter is not clogged.
Monthly maintenance
○ Rinse the fuel tank with gasoline, and clean fuel fi lter.
○ Clean chain oil fi lter.
○ Clean the exterior of the carburetor and the space around it.
Quarterly maintenance
○ Clean the cooling fi ns on the cylinder.
○ Clean the fan and the space around it.
○ Clean the carbon of muffl er.
CAUTION
Cleaning of cylinder fi ns, fan and muffl er shall be done by a
HITACHI Authorized Service Centers.
NOTE
When ordering the parts to Hitachi Authorized Service Centers,
please use the item numbers showing on the parts breakdown
section in this instruction.
BAR NO.
(E&S)
PO12-50CR
91PX/91VG
PO14-50CR
3/8"
0.025"
80°
30°
90°
LENGTH-TYPE NOSE-TYPE
12" SPROCKET
14" SPROCKET
CHAIN NO.
(OREGON)
91PX/91VG-45
91PX/91VG-52