Ryobi RPP254FEJSN - Idle Speed Adjustment; Chain Maintenance

13
English
IDLE SPEED ADJUSTMENT
See gure 21.
If the chain turns at idle, the idle speed screw (item 47)
needs adjusting on the engine. Turn the idle speed screw
counterclockwise to reduce the idle RPM and stop the
chain movement. If the saw chain still moves at idle speed,
contact a service dealer for adjustment and discontinue
use until the repair is made.
WARNING
The saw chain should never turn at idle. Turn the
idle speed screw counterclockwise to reduce the idle
RPM and stop the chain, or contact a service dealer
for adjustment and discontinue use until the repair is
made. Serious personal injury may result from the saw
chain turning at idle.
AUTOMATIC BAR AND CHAIN LUBRICATION
See gure 22.
■ Use a premium blend of Bar and Chain Lubricant. It is
designed for chains and chain oilers and is formulated
to perform over a wide temperature range with no
dilution required.
■ Remove the cap and carefully pour approximately
230ml of bar and chain lubricant into the bar lube
reservoir.
■ Replace the cap and tighten securely.
■ Check and refill the bar lube reservoir every time the
engine is fuelled.
NOTE: Do not use dirty, used or otherwise contaminated
lubricant. Damage may occur to the oil pump, bar, or
chain.
NOTE: Use chain and bar oil only. other oils will not stick
to the chain properly and will result in damage to the chain
and bar.
CHAIN MAINTENANCE
See gure 23.
For smooth and fast cutting, the chain needs to be
maintained properly. The following conditions indicate that
the chain requires sharpening:
■ Wood chips are small and powdery
■ Chain must be forced through the wood during cutting
■ Chain cuts to one side
During maintenance of the chain, consider the following:
■ Improper filing angle of the side plate can increase the
risk of a severe kickback.
■ Depth gauge (or raker clearance) setting determines
the height the cutter enters the wood and the size of
the wood chip that is removed. Too much clearance
increases the potential for kickback. Too little
clearance decreases the size of the wood chip thus
decreasing the chain's cutting ability.
■ If cutter teeth have hit hard objects such as nails and
stones, or have been abraded by mud or sand on the
wood, have a service agent sharpen the chain.
HOW TO SHARPEN THE CUTTERS
See gures 24 - 27.
Be careful to le all cutters to the specied angles and to
the same length, as fast cutting can be obtained only when
all cutters are uniform.
■ Tighten the chain tension enough that the chain does
not wobble. Do all of your filing at the mid-point of the
bar. Wear gloves for protection.
■ Use a 5/32 in. diameter round file and holder.
■ Keep the file level with the top plate of the tooth. Do
not let the file dip or rock.
■ Using light but firm pressure, stroke towards the front
corner of the tooth. Lift file away from the steel on each
return stroke.
■ Put a few firm strokes on every tooth. File all left hand
cutters in one direction. Then move to the other side
and file the right hand cutters in the opposite direction.
Occasionally remove filings from the file with a wire
brush.
CAUTION
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
kickback. Failure to replace or repair damaged chain
can cause serious injury.
CLEANING THE EXHAUST PORT AND MUFFLER
Depending on the type of fuel used, the type and amount
of lubricant used, and/or your operating conditions,
the exhaust port and mufer may become blocked with
carbon deposits. If you notice a power loss with your petrol
powered tool, a qualied service technician from a service
centre will need to remove these deposits to restore
performance.