Cutting limb of fallen tree (Fig. 23)
First check to which side the limb is bent. Then make the initial cut
from the bent side and finish by sawing from the opposite side.
WARNING!
Be alert to the possibilities of spring back from a cut limb.
Pruning of standing tree (Fig. 24)
Cut up from the bottom, finish down from the top.
WARNING!
• Do not use an unstable foothold or ladder
• Do not overreach.
• Do not cut above shoulder height.
• Always use both hands to grip the saw.
MAINTENANCE & STORAGE
WARNING!
Before cleaning, inspecting or repairing your unit, make sure
the engine has stopped and is cool. Disconnect the spark plug
to prevent accidental starting.
Maintenance after each use
1. Air filter
Dust on the filter surface can be removed by tapping a corner of the
filter against a hard surface. To clean dirt in the meshes, split the
filter into halves and brush in petrol. (Fig. 25).
2. Oiling port
Dismount the guide bar and check the oiling port for clogging.
(Fig. 26).
3. Guide bar
When the guide bar is dismounted, remove saw dust in the bar
groove and the oiling port. (Fig. 27).
Grease the nose sprocket from the feeding port on the tip of the bar.
(Fig. 28).
(1) Oiling port
(2) Grease port
(3) Sprocket
4. Others
Check for fuel leakage and loose fastenings and damage to major
parts. Especially handle joints and guide bar mounting. If any defects
are found, make sure to have them repaired before operating again.
Periodical service points
1. Cylinder fins
Dust clogging between the cylinder fins will cause overheating of the
engine. Periodically check and clean the cylinder fins after removing
the air cleaner and the cylinder cover.
When installing the cylinder cover, make sure that switch wires and
grommets are positioned correctly in place. (Fig. 29).
Fig.23
Fig.24
Fig.25
Fig.26
Fig.27
NOTE:
Be sure to block the air intake hole.
2. Spark plug (Fig.30)
Clean the electrodes with a wire brush and reset the gap to 0.65mm
as necessary.
3. Sprocket (Fig. 31)
Check for cracks and for excessive wear interfering with the chain
drive. If the wearing is found obviously, replace it with a new one.
Never fit a new chain on a worn sprocket, or a worn chain on a new
sprocket.
(1) Sprocket
(2) Needle bearing
(3) Clutch drum
(4) Spacer
(5) Clutch shoe
4. Fuel filter
Disassemble the filter and wash with gasoline, or replace with new
one if needed.
5. Oil filter
Disassemble the filter and wash with gasoline, or replace with new
one if needed.
6. Front and rear dampers
Replace if adhered part is peeled or crack is observed on the rubber
part.
Maintenance of saw chain and guide bar
Saw chain
WARNING!
It is very important for smooth and safe operation to keep the
cutters always sharp.
Your cutters need to be sharpened when:
• Saw dust becomes powder-like
• You need extra force to saw in
• The cut way does not go straight
• Vibration increases
• Fuel consumption increases
Cutter setting standards
WARNING!
Be sure to wear safety gloves
Before filing:
• Make sure the saw chain is held securely
• Make sure the engine is stopped
• Use a round file of proper size for your chain
Chain type: 21VB
File size:
3
/
16
in (4.76mm)
Place your file on the cutter and push straight forward. Keep the file
position as illustrated. (Fig. 32)
After every cutter has been set, check the depth gauge and file it to
the proper level as illustrated. (Fig. 33).
WARNING!
Be sure to round off the front edge to reduce the chance of
kickback or tie-strap breakage.
(1) Appropriate gauge checker
(2) Make the shoulder round
(3) Depth gauge standard
Make sure every cutter has the same length and edge angles as
illustrated (Fig. 34).
Fig.28
Fig.29
Fig.30
Fig.31
Fig.32
Fig.33
633855-Instructions.indd 5
26/3/07 17:05:57
