Silverline 45cc Petrol Chainsaw - Manual (Page 10)

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9
Petrol Chainsaw 385mm 242927
Note: As an alternative starting position, the Rear Handle (13) of the chainsaw may be
clamped between your legs (see Fig. G), just above your knee, instead of standing it on
the ground. If you prefer this position, double check the chain brake is engaged, maintain
balance and keep secure footing. Keep your left arm on the Front Handle (4) in a straight,
locked position, and pull the Recoil Starter (5) with your right hand, as described above.
WARNING: Under NO circumstances must the guide bar be clamped between your legs,
starting the chainsaw.
13. To switch off the engine, toggle the Engine Switch downward, into the ‘STOP’
position
Starting a flooded engine
Note: This paragraph refers to engines that have been flooded with fuel, NOT engines that
have suffered from water damage. If your generator has been flooded with water, it must
be returned to an authorised Silverline service centre for repair.
• Some minor maintenance must be carried out, in order to start an engine that has been
flooded with fuel:
1. Turn the Cover Screw (7) anticlockwise and remove the Air Cleaner Cover (6)
2. Remove the Air Cleaner (20) element
3. Pull the Spark Plug Cap (21) off the Spark Plug (22)
4. Use the included Chainsaw Combination Wrench (26) to remove the Spark Plug, by
turning it anticlockwise
5. If the spark plug is fouled, encrusted or soaked with fuel, clean and adjust it as
described in ‘Maintaining the spark plug’. Replace if required
6. Clean excess fuel from the combustion chamber by cranking the engine several times
while the spark plug is removed. This is done by slowly pulling the Recoil Starter (5)
7. Reinstall the Spark Plug, and firmly tighten it with the Chainsaw Combination Wrench
Note: It is recommended to use a suitable torque wrench (not included), set to 20Nm, to
set the spark plug.
8. Repeat the starting procedure as if the engine was already warm, i.e. with no choke
Checking chain lubrication
• After starting the engine, the chainsaw
operator needs to ensure that sufficient
oil is delivered to lubricate the chain,
before starting work:
1. With the engine running, disengage
the chain brake my pulling the Front
Hand Guard (3) backward towards
the Front Handle (4)
2. Hold the chainsaw firmly with both
hands, and direct the Guide Bar (1)
towards the ground (see Fig. H)
3. Disengage the Throttle Interlock (12) and press the Throttle Trigger (11)
4. Run the chainsaw at medium speed. Oil should be scattered off the chain, on to the
floor
5. If no or insufficient oil escapes, refer to ‘Adjusting chain oil delivery’ in the
‘Maintenance’ section
WARNING: Potentially dangerous reactive forces may occur any time the chain is rotating.
In any chainsaw, the powerful force used to cut wood can be reversed (and work against
the operator). If the rotating chain is suddenly stopped by contact with any solid object
like a log or branch or is pinched, the reactive forces may occur instantly. These reactive
forces may result in loss of control which may, in turn, cause serious or fatal injury.
An understanding of the causes of these reactive forces may help the operator avoid
loss of control. The most common reactive forces are kickback (see ‘Kickback Safety
Precautions’), pushback and pull-in.
Transporting the chainsaw
WARNING: ALWAYS switch off the engine before putting a chainsaw down or transporting
it. Carrying a chainsaw with the engine running is extremely dangerous and can lead to
serious or fatal injuries.
• ALWAYS fit the Safety Cover (23) to the Guide Bar (1) before transporting the chainsaw.
Carry the saw on its Front Handle (4), with the bar pointing backwards
Note: Wait until the engine has cooled completely, before fitting the Safety Cover (23) to
the Guide Bar (1), or transporting the chainsaw in a vehicle. The Exhaust Muffler (19) gets
extremely hot during operation.
Understanding reactive forces when cutting with a
chainsaw
“Pull-in” (see Fig. I):
• Occurs when the
Saw Chain (2) on the
underneath of the
Guide Bar (1) suddenly
stops, for example
when pinched, caught
or catching on a
foreign object inside
the wood. The saw
is pulled forward
viciously, and may
cause the operator to lose control of the chainsaw. Other causes are a too low chain
speed when making contact with the wood, or bumper spikes that are not properly
pushed against the wood whilst cutting
WARNING: There is a high risk of pull-in when cutting small diameter branches and thin
trees, as small items can easily get caught in the chain.
To avoid pull-in:
1. ALWAYS wait until the chain has reached its full cutting speed, before making contact
with the wood
2. Ensure the Bumper Spikes (18) engage the wood properly
3. Use wedges to open up existing partial cuts
“Push-back”
(see Fig. J):
• Occurs when the Saw
Chain (2) on top the
Guide Bar (1) suddenly
stops, for example
when pinched,
caught or catching
on a foreign object
inside the wood.
The saw is viscously
pushed backwards
towards the operator,
potentially causing him to lose control over the chainsaw. Pushback will also occur,
when the top of the Guide Bar is used for cutting.
To avoid pushback:
1. Avoid cutting situations that may cause material to pinch the top of the Saw Chain
2. DO NOT cut more than one object at a time
3. DO NOT twist the saw when pulling the bar out of a plunge or underbuck cut, which
could cause pinching of the Saw Chain
• Kickback: see ‘Kickback Prevention and Safety Precautions’
Cutting instructions
WARNING: Tree felling procedures can be challenging and complex, and should therefore
only be undertaken by people with sufficient expertise and training. Imprudent chainsaw
operation can lead to fatal injury and substantial property damage.
WARNING: In order to keep control of your saw, ALWAYS maintain secure footing. NEVER
work from a ladder or similar contraptions that are potentially insecure. NEVER use the saw
above shoulder height.
WARNING: NEVER work from inside a tree, unless you have been specifically,
professionally trained. Chainsaw operators climbing trees MUST be properly secured
with a professional harness system. They MUST have BOTH hands available to operate
the chainsaw. Precautions must be taken to protect the chainsaw operator from falling
branches.
• ALWAYS hold the chainsaw with both hands, when the engine is running. Keep your
hands clean and your gloves free of oil, grease and dirt
• NEVER put the chainsaw down and leave it with the engine running. Vibrations will
cause the chainsaw to move, potentially causing damage and injury
• Hold the Front Handle (4) with your left hand, and the Rear Handle (13) with your right
hand, fingers wrapped around the handle and Throttle Trigger (11)
Note: This position should also be adopted by left-handed operators.
• Holding the chainsaw in this exact position enables the operator to best oppose and
absorb the reactive forces occurring during chainsaw work (i.e. push-in, pull-back and
kickback). Ensure you keep the handles clean and in good condition
• NEVER attempt to cut any material other than wood
• During chainsaw use, make sure that the Saw Chain does not touch any foreign objects
(e.g. stone, nails, wire, etc.), as this might cause violent reactive forces, damage to the
tool and injury
FIG. I
FIG. J
FIG. H
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