12
AU
13
AU
6.
Reinstall a new spark plug.
•
CARBURETOR ADJUSTMENT
The carburetor was pre-set at the factory for optimum per-
formance. If further adjustments are necessary, please
take your unit to the nearest qualified service technician.
•
STORING A CHAIN SAW
Storing a chain saw for longer than 30 days requires stor-
age maintenance. Unless the storage instructions are fol-
lowed, fuel remaining in the carburetor will evaporate,
leaving gum-like deposits. This could lead to difficult start-
ing and result in costly repairs.
1.
Remove the fuel tank cap slowly to release any pres-
sure in tank. Carefully drain the fuel tank.
2.
Start the engine and let it run until the unit stops to
remove fuel from carburetor.
3.
Allow the engine to cool (approx. 5 minutes).
4.
Using a spark plug wrench, remove the spark plug.
5.
Pour 1 teaspoon of clean 2-cycle oil into the combus-
tion chamber. Pull starter rope slowly several times to
coat internal components. Replace spark plug. (Fig.
19)
NOTE:
Store the unit in a dry place and away from possi-
ble sources of ignition such as a furnace, gas hot water
heater, gas dryer, etc.
•
REMOVING A UNIT FROM STORAGE
1.
Remove spark plug.
2.
Pull starter rope briskly to clear excess oil from com-
bustion chamber.
3.
Clean and gap spark plug or install a new spark plug
with proper gap.
4.
Prepare unit for operation.
5.
Fill fuel tank with proper fuel / oil mixture. See
FUEL
AND LUBRICATION
Section.
•
GUIDE BAR MAINTENANCE
Frequent lubrication of the guide bar (railed bar which
supports and carries the saw chain) sprocket tip is
required. Proper maintenance of the guide bar, as
explained in this section, is essential to keep your saw in
good working condition.
SPROCKET TIP LUBRICATION:
Lubrication of the sprocket tip is recommended after 10
hours of use or once a week, which ever occurs first.
Always thoroughly clean guide bar sprocket tip before
lubrication.
TOOLS FOR LUBRICATION:
The Lube Gun (optional) is recommended for applying
grease to the guide bar sprocket tip. The Lube Gun is
equipped with a needle nose tip which is necessary for the
efficient application of grease to the sprocket tip.
TO LUBRICATE SPROCKET TIP:
1.
Press the STOP switch down.
NOTE:
It is not necessary to remove the saw chain to
lubricate the guide bar sprocket tip. Lubrication can be
done on the job.
2.
Clean the guide bar sprocket tip.
3.
Using the Lube Gun (optional), insert needle nose
into the lubrication hole and inject grease until it
appears at outside edge of sprocket tip (Fig. 20).
4.
Rotate saw chain by hand. Repeat lubrication proce-
dure until the entire sprocket tip has been greased.
Fig. 15A
A
Fig. 15B
C
D
B
CAUTION
: Never store a chain saw for
longer than 30 days without performing the
following procedures.
Fig. 19
CAUTION
: The sprocket tip on your new saw has
been pre-lubricated at the factory. Failure to
lubricate the guide bar sprocket tip as explained
below will result in poor performance and
seizure, voiding the manufacturer’s warranty.
WARNING:
Wear heavy duty work gloves
when handling the bar and chain.
Fig. 20
GUIDE BAR MAINTENANCE:
Most guide bar problems can be prevented merely by
keeping the chain saw well maintained.
Insufficient guide bar lubrication and operating the saw
with chain that is TOO TIGHT will contribute to rapid bar
wear.
To help minimize bar wear, the following guide bar main-
tenance procedures are recommended.
CHAIN SHARPENING:
Chain sharpening requires special tools to ensure that
cutters are sharpened at the correct angle and depth. For
the inexperienced chain saw user, we recommend that the
saw chain be professionally sharpened by the nearest
professional Service Center. If you feel comfortable sharp-
ening your own saw chain, special tools are available from
the professional Service Center.
CHAIN SHARPENING
- The pitch of the chain (Fig. 21) is
3/8” LoPro x .050”.
Sharpen the chain using protective gloves and a round file
of ø5/32” (4mm).
Always sharpen the cutters only with outward strokes (Fig.
22) observing the values given in Fig. 21.
After sharpening, the cutting links must all have the same
width and length.
After every 3-4 times the cutters have been sharpened
you need to check the height of the depth gauges and, if
necessary, lower them using the flat file and template sup-
plied optional, then round off the front corner. (Fig. 23)
GUIDE BAR
- The bar should be reversed every 8 work-
ing hours to ensure uniform wear.
Keep the bar groove and lubrication hole clean using a bar
groove cleaner (optional). (Fig. 25)
Check the bar rails frequently for wear and, if necessary,
remove the burs and square-up the rails using a flat file.
(Fig. 26)
BAR WEAR
- Turn guide bar frequently at regular inter-
vals (for example, after 5 hours of use), to ensure even
wear on top and bottom of bar.
OIL PASSAGES
- Oil passages on the bar should be
cleaned to ensure proper lubrication of the bar and chain
during operation.
NOTE:
The condition of the oil passages can be easily
checked. If the passages are clear, the chain will auto-
matically give off a spray of oil within seconds of starting
the saw. Your saw is equipped with an automatic oiler sys-
tem.
•
CHAIN MAINTENANCE
CHAIN TENSION:
Check the chain tension frequently and adjust as often as
necessary to keep the chain snug on the bar, but loose
enough to be pulled around by hand.
BREAKING IN A NEW SAW CHAIN:
A new chain and bar will need chain readjustment after as
few as 5 cuts. This is normal during the break-in period,
and the interval between future adjustments will begin to
lengthen quickly.
CHAIN LUBRICATION:
Always make sure the automatic oiler system is working
properly. Keep the oil tank filled with Sprocket Oil.
Adequate lubrication of the bar and chain during cutting
operations is essential to minimize friction with the guide
bar.
Never starve the bar and chain of lubricating oil. Running
the saw dry or with too little oil will decrease cutting effi-
ciency, shorten saw chain life, cause rapid dulling of chain,
and lead to excessive wear of bar from overheating. Too
little oil is evidenced by smoke or bar discoloration.
WARNING
: Always wear protective gloves
during maintenance operations. Do not carry
out maintenance when the engine is hot.
Fig. 21
WARNING
: A sharp chain produces well-
defined chips. When your chain starts to pro-
duce sawdust, it is time to sharpen.
Fig. 23
Fig. 24
WARNING
: Proper adjustment of the depth
gauge is as important as proper sharpening
of the chain.
WARNING
: Never mount a new chain on a
worn sprocket or self-aligning ring.
Fig. 25
Fig. 26
WARNING:
Never have more than 3 links
removed from a loop of chain. This could
cause damage to the sprocket.
