Ryobi RCS4640C Original Instructions Manual page 34

Deutsch (Übersetzung der originalen Anleitungen)
tension" earlier in this manual.
3. Use a 4 mm (5/32 inch) diameter round le and holder.
Do all your ling at the midpoint of the bar.
4. Keep the le level with the top plate of the tooth. Do
not let the le dip or rock.
5. Using light but rm pressure, stroke towards the front
corner of the tooth.
6. Lift the le away from the steel on each return stroke.
7. Put a few rm strokes on every tooth. File all left-hand
cutters (A) in one direction. Then move to the other
side and le the right-hand cutters (B) in the opposite
direction.
8. Remove lings from the le with a wire brush.
CAUTION
A dull or improperly sharpened chain can cause
excessive engine speed during cutting which may result
in severe engine damage.
WARNING
Improper chain sharpening increases the potential of
kick-back.
WARNING
Failure to replace or repair a damaged chain can cause
serious injury.
WARNING
The saw chain is very sharp. Always wear protective
gloves when performing maintenance to the chain.
TOP PLATE FILING ANGLE
See gure 57.
(A) Correct 30° – le holders are marked with guide marks
to align le properly to produce correct top plate angle.
(B) Less than 30° – for cross cutting.
(C) More than 30° – feathered edge dulls quickly.
SIDE PLATE ANGLE
See gure 58.
(D) Correct 80° – produced automatically if you use the
correct diameter le in the le holder.
(E) Hook – "Grabs" and dulls quickly, increases the
potential of kick-back. Results from using a le with a
diameter too small or a le held too low.
(F) Backward slope – needs too much feed pressure,
English (Original instructions)
causes excessive wear to the bar and chain. Results from
using a le with a diameter too large or le held too high.
MAINTAINING DEPTH GAUGE CLEARANCE
See gure 51. See gure 59 - 60.
MAINTAINING THE GUIDE BAR
See gure 61.
Make sure the chain has stopped before you do any
work on the saw.
Every week of use, reverse the guide bar on the saw to
distribute the wear for maximum bar life. The bar should
be cleaned every day of use and checked for wear and
damage.
Feathering or burring of the bar rails is a normal process
of bar wear. Such faults should be smoothed with a le as
soon as they occur.
A bar with any of the following faults should be replaced:
In addition, lubricate guide bars (with a sprocket at their
tip) weekly. Using a grease syringe, lubricate weekly in
the lubricating hole.
Turn the guide bar and check that the lubrication holes (A)
and chain groove are free from impurities.
CLEANING THE AIR FILTER
See gure 62. See gure 63 - 66.
32 32
Maintain the depth gauge (A) at a clearance of 0.6 mm
(0.025 inch). Use a depth gauge tool for checking the
depth gauge clearances.
Every time the chain is filed, check the depth gauge
clearance.
Use a flat file (B) (not provided) and a depth gauge
jointer (C) (not provided) to lower all gauges uniformly.
Use a 0.6 mm (0.025 inch) depth gauge jointer. After
lowering each depth gauge, restore original shape
by rounding the front (D). Be careful not to damage
adjoining drive links with the edge of the file.
Depth gauges must be adjusted with the flat file in the
same direction the adjoining cutter was filed with the
round file. Use care not to contact cutter face with flat
file when adjusting depth gauges.
WARNING
Wear inside the bar rails which permits the chain to lie
over sideways;
Bent guide bar;
Cracked or broken rails;
Spread rails.