Fuel And Lubrication - Power Craft PPCS-38cc User Manual

CAUTION: A new saw chain stretches, requiring
adjustment after as few as 5 cuts. This is normal
with a new chain, and the interval between future
adjustments will lengthen quickly.
D
Fig. 5
CAUTION: If saw chain is TOO LOOSE or TOO
TIGHT, the sprocket, bar, chain, and crankshaft
bearings will wear more rapidly. Study Fig. 6 for
information concerning correct cold tension (A),
correct warm tension (B), and as a guide for
when saw chain needs adjustment (C).
A
B
C
Fig. 6
• CHAIN BRAKE MECHANICAL TEST
Your chain saw is equipped with a Chain brake that
reduces possibility of injury due to kickback. The brake is
activated if pressure is applied against brake lever when,
as in the event of kickback, operator's hand strikes the
lever. When the brake is actuated, chain movement
stops abruptly.
WARNING: The purpose of the chain brake is to
reduce the possibility of injury due to kickback;
however, it cannot provide the intended measure
of protection if the saw is operated carelessly.
Always test the chain brake before using your
saw and periodically while on the job.
TO TEST CHAIN BRAKE:
1. The Chain brake is DISENGAGED (chain can move)
when BRAKE LEVER IS PULLED BACK AND
LOCKED (Fig. 7A).
2. The Chain brake is ENGAGED (chain is stopped)
when brake lever is in forward position. You should
not be able to move chain (Fig. 7B).
NOTE: The brake lever should snap into both positions.
If strong resistance is felt, or lever does not move into
either position, do not use your saw. Take it immediately
to a professional Service Center for repair.
Fig. 7B
Fig. 7A

FUEL AND LUBRICATION

Safety first: Flammable materials. Fill chainsaw at least
4 metres away from work area. No smoking!
• FUEL
Use regular grade unleaded petrol mixed with 40:1 cus-
tom 2-stroke engine oil for best results. Use mixing ratios
in Section FUEL MIXING TABLE.
WARNING: Never use straight petrol in your unit.
This will cause permanent engine damage and
void the manufacturer's warranty for that product.
Never use a fuel mixture that has been stored for
over 90 days.
WARNING: If 2-stroke lubricant other than.
Custom Lubricant is to be used, it must be a
premium grade oil for 2-stroke air cooled engines
mixed at a 40:1 ratio. Do not use any 2-stroke oil
product with a recommended mixing ratio of
100:1. If insufficient lubrication is the cause of
engine damage, it voids the manufacturer's
engine warranty for that occurrence.
• MIXING FUEL
Mix fuel with 2 stroke oil in an approved container. Use
mixing table for correct ratio of fuel to oil. Shake contain-
er to ensure thorough mix.
WARNING: Lack of lubrication voids engine
warranty.
• FUEL AND LUBRICATION
Petrol and Oil Mix 40:1 Oil Only
• FUEL MIXING TABLE
PETROL 40:1 Ratio
Custom Lubricant
5 Liters 4.3 oz. 125ml (cc)
1 lmp. Gal. 4.3 oz. 125ml (cc)
Mixing 40 Parts Petrol
Procedure to 1 part Lubricant
1ml = 1cc
• RECOMMENDED FUELS
Some conventional petrols are being blended with oxygenates such as
alcohol or an ether compound to meet clean air standards. Your engine
is designed to operate satisfactorily on any petrol intended for automo-
tive use including oxygenated petrols.
• CHAIN AND BAR LUBRICATION
Always refill the chain oil tank each time the fuel tank is refilled. We
recommend using oil which contains additives to reduce friction and
wear and to assist in the prevention of pitch formation on the bar and
chain. Seek the advice of an authorised service centre for correct lubri-
cant. Always use in accordance with manufacturers instructions.
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• 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 CLUBRICATION:
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.
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.
TO LUBRICATE SPROCKET TIP:
1. Move 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.
WARNING: Wear heavy duty work gloves
when handling the bar and chain.
3. Using a Lube Gun, insert needle nose into the lubri-
cation hole and inject grease until it appears at out-
side edge of sprocket tip (Fig .23).
4. Rotate saw chain by hand. Repeat lubrication proce-
dure until the entire sprocket tip has been greased.
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.
Fig. 23
To help minimize bar wear, the following guide bar main-
tenance procedures are recommended.
CHAIN SHARPENING - The pitch of the chain (Fig. 24) is
3/8" LoPro x .050".
Sharpen the chain using protective gloves and a round file
of ø3/16" (4.8mm).
Always sharpen the cutters only with outward strokes
(Fig. 25) observing the values given in Fig. 24.
WARNING:
Always wear protective gloves dur-
ing maintenance operations. Do not carry out
maintenance when the engine is hot.
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. 26)
GUIDE BAR - The bar should be reversed every 8 work-
ing hours to ensure uniform wear.
WARNING: A sharp chain produces well-
defined chips. When your chain starts to produce
sawdust, it is time to sharpen.
Keep the bar groove and lubrication hole clean using the
bar groove cleaner supplied optional. (Fig. 27)
Check the bar rails frequently for wear and, if necessary,
remove the burs and square-up the rails using the flat file.
(Fig. 28)
WARNING: Proper adjustment of the depth
gauge is as important as proper sharpening of
the chain.
Fig. 25
WARNING:
Never mount a new chain on a
worn sprocket or self-aligning ring.
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Fig. 24
Fig. 26