General Maintenance - Ryobi RCS4246B Operator's Manual

cut off the limb further out to reduce the weight. this
prevents stripping the bark from the main member.
n underbuck the branch 1/3 through for your first cut.
n Overbuck the branch to drop it.
n Finish by cutting smoothly and neatly against the
main member so the bark will grow back to seal the
wound.
WARNING
If the limbs to be pruned are above chest height,
hire a professional to perform the pruning.
CUTTING SPRINGPOLES
See Figure 35.
a springpole is any log, branch, rooted stump, or sapling
which is bent under tension by other wood so that it
springs back if the wood holding it is cut or removed.
On a fallen tree, a rooted stump has a high potential of
springing back to the upright position during the bucking
cut to separate the log from the stump. Watch out for
springpoles — they are dangerous.
WARNING
springpoles are dangerous and could strike the
operator, causing the operator to lose control of
the chainsaw. this could result in severe or fatal
injury to the operator.
MAINTENANCE
WARNING
When servicing, use only identical ryobi
replacement parts. use of any other parts may
create a hazard or cause product damage.
WARNING
always wear safety goggles or safety glasses
with side shields during power tool operation or
when blowing dust. If operation is dusty, also
wear a dust mask.

GENERAL MAINTENANCE

avoid using solvents when cleaning plastic parts. most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use.
use clean cloths to remove dirt, dust, lubricant, grease,
etc.
WARNING
Do not at any time let brake fluids, petrol,
p e t r o l e u m - b a s e d p r o d u c t s , p e n e t r a t i n g
lubricants, etc., come in contact with plastic
parts. Chemicals can damage, weaken or
destroy plastic which may result in serious
personal injury.
English
LUBRICATION
all of the bearings in this product are lubricated with a
sufficient amount of high grade lubricant for the life of
the unit under normal operating conditions. therefore, no
further lubrication is required.
REPLACING THE GUIDE BAR AND CHAIN
See Figures 36 - 45.
DANGER
never start the engine before installing the guide
bar, chain, clutch cover, and clutch drum. Without
all these parts in place, the clutch can fly off or
explode, exposing the user to possible serious
injury.
WARNING
to avoid serious personal injury, read and
understand all the safety instructions in this
section.
n always place the switch in the stop "0" position
before you work on the saw.
n make sure the chain brake is not set by pulling the
chain brake lever/hand guard towards the front
handle to the run position.
Note: When replacing the guide bar and chain,
always use the specified bar and chain listed in the
Bar and Chain Combinations section listed earlier in
this manual.
n Wear gloves when handling the chain and bar. these
components are sharp and may contain burrs.
1. Press in on the clutch cover lock knob and rotate
counterclockwise until the clutch cover can be
removed.
2. Remove the bar and chain from the mounting surface.
3. Remove the old chain from the bar.
4. Lay out the new saw chain in a loop and straighten any
kinks. The cutters should face in the direction of chain
rotation. If they face backwards, turn the loop over.
5. Place the chain drive links into the bar groove as
shown.
6. Position the chain so there is a loop at the back of
the bar.
7. Hold the chain in position on the bar and place the loop
around the sprocket.
8. Fit the bar flush against the mounting surface so that
the bar studs are in the long slot of the bar.
9. Replace the clutch cover ensuring that the adjusting
pin in the clutch cover is in the bar chain tensioning
pin hole.
10. Replace the clutch cover and rotate clutch cover lock
knob just enough to hold the cover in position.
Note: the bar must be free to move for tension
adjustment.
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