Hitachi CS 33EB Handling Instructions Manual page 25

Oiler port (Fig. 30)
Clean the chain oiler port (37) whenever possible.
Guide bar (Fig. 31)
Before using the machine, clean the groove and oiler port (38) in the
bar with the special gauge off ered as an optional accessory.
Side case (Fig. 32)
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.
Fuel fi lter (Fig. 33)
Remove the fuel fi lter from the fuel tank and thoroughly wash it in
solvent. After that, push the fi lter into the tank completely.
NOTE
If the fi lter is hard due to dust and dirt, replace it.
Chain oil fi lter (Fig. 34)
Remove the oil fi lter and thoroughly wash it in solvent.
Cleaning the cylinder fi ns (Fig. 35)
When wood chips are caught between cylinder fi ns (39), the engine
may overheat, resulting in lower output. To avoid this, always keep
cylinder fi ns and fan case clean.
Every 100 operating hours, or once a year (more often if conditions
require), clean fi ns and external surfaces of engine of dust, dirt and
oil deposits which can contribute to improper cooling.
Cleaning the muffl er (Fig. 36)
Remove the muffl er and spark arrestor, if so equipped, and clean
out any excess carbon from the exhaust port or muffl er inlet every
100 hours of operation.
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. 37, 38)
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.
40. Top plate
41. Working corner
42. Side plate
43. Gullet
44. Heel
45. Chassis
46. Rivet hole
47. Toe
48. Depth gauge
49. Correct angle on top plate (degree of angle depends on chain
type)
50. Slightly protruding "hook" or point (curve on non-chisel chain)
51. Top of depth gauge at correct height below top plate
52. Front of depth gauge rounded off
LOWERING DEPTH GAUGES WITH A FILE
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. 39)
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 saw. (Fig. 40)
GENERAL INSTRUCTIONS FOR FILING CUTTERS
File (53) cutter on one side of the chain from the inside out. File on
forward stroke only. (Fig. 41)
5) Keep all cutters the same length. (Fig. 42)
6) File enough to remove any damage to cutting edges (side plate
(54) and top plate (55)) of cutter. (Fig. 43)
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.
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 bar nuts are suffi ciently tightened.
Especially inspect the bolt of muffl er and ensure that they are
properly tightened before starting engine. Should any of the
bolts be loose, retighten them immediately. Failure to do so
could result in serious hazard.
○ Make sure that the chain transport guard is undamaged and
that it can be securely fi tted.
○ Check that nuts and screws are suffi ciently tightened.
○ Check the tip of the 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.
Weekly maintenance
○ Check the 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.
○ Clean the cooling fi ns on the cylinder and check that the air
intake at the starter is not clogged.
○ Clean the air fi lter.
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.
○ Clean the fan and the space around it.
○ Clean the muffl er of carbon.
NOTE
When ordering the parts to Hitachi Authorized Service Centers,
please use the item numbers showing on the parts breakdown
section in this instruction.
LENGTH-
BAR NO.
26779 300 mm (12")
26780 350 mm (14")
MODEL
160NDEA041 400 mm (16")
NO.
120SDEA041 300 mm (12")
OREGON
140SDEA041 350 mm (14")
160SDEA041 400 mm (16")
MODEL PO12-50CR 300 mm (12")
NO. PO14-50CR 350 mm (14")
E&S PO16-50CR 400 mm (16")
91PX / 91VG
NOSE-TYPE CHAIN NO.
TYPE
NON-ARMOR 91PX / 91VG – 45
NON-ARMOR 91PX / 91VG – 52
NON-ARMOR 91PX / 91VG – 57
SPROCKET 91PX / 91VG – 45
SPROCKET 91PX / 91VG – 52
SPROCKET 91PX / 91VG – 57
SPROCKET 91PX / 91VG – 45
SPROCKET 91PX / 91VG – 52
SPROCKET 91PX / 91VG – 57
3/8"
0.025"
80°
30°
90°
25