Maintenance - Ryobi R18CG Original Instructions Manual

any hardened material from the tip.
NOTE: An inner seal is usually found only in
cardboard caulk tubes.
While holding the caulk gun steadily with one hand,
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pull the handle of the plunger rod away from the caulk
gun. Continue pulling until the plunger base reaches
the back of the carriage frame.
Load the caulk tube into the carriage frame, making
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sure it is well seated at both ends.
ELECTRONIC OVERLOAD PROTECTION
The caulk gun is protected by an electronic overload
protection feature. If too much pressure is exerted on
the tube, the motor will shut down. This helps to prevent
damage to the tool and the caulk tube. If the motor shuts
off, make sure that:
Nozzle tip is cut
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Inner seal in the caulk tube is broken
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Hardened material is removed from the nozzle
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Caulk tube is not damaged or frozen
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Plunger rod is free of caulk/adhesive materials
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Release the trigger and wait for 3 to 5 seconds to allow
the electronics to reset. If the motor again shuts off, move
the variable speed selector to the middle position and
press the trigger again. If the motor continues to shut
off, try another tube of material or take the tool to an
authorized service center.
WARNING
Battery tools are always in operating condition.
Therefore, switch should always be locked when
not in use or when carrying at your side.
HOW TO GET STARTED - APPLYING CAULK
See Figure 6-8.
Experiment in an out-of-the-way area to find the
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best speed to use to deliver the caulk bead you want.
Prepare the surface to be caulked by removing any
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dust, dirt, or remnants of old caulking. Make sure the
area to be caulked is clean and dry.
Set the speed of the caulk gun to match your
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application needs, using just enough caulk to do the
job.
Hold the gun at a slight angle. If filling a crack, insert
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the spout into the crack, if possible; otherwise, run
the caulk gun along the surface.
Squeeze the trigger on the caulk gun, allowing the
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caulk to extrude from the tube tip.
NOTE: If the bead of caulk is too narrow, re-cut
the nozzle to provide a larger opening. However,
it is better to apply a thin bead of caulk and add a
little more if necessary than to apply too much and
English
attempt to remove the excess.
Carefully move the caulk gun at an even pace along
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the gap to be filled as you continue to depress the
switch trigger. Make sure the caulk comes in full
contact with both application surfaces. If necessary,
use your finger to gently press the caulk into a corner
or crack.
NOTE: The best fill is usually achieved by pushing
the caulk out into the gap in a forward motion.
However, in some cases (particularly where the side
materials are rough or uneven), a pulling motion may
work better as the cartridge will be less likely to get
snagged along the joint.
The motor will shut off automatically when a caulk
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tube becomes empty. Pull the plunger rod back and
replace the caulk tube as necessary.
To end the caulk bead, release the switch trigger.
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Draw a moistened finger or other "smoothing tool"
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along the caulk bead after applying. This will help
the caulk adhere to the application surfaces and will
create a clean, finished appearance.
Use a damp towel or rag to clean off any excess
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caulk.

MAINTENANCE

WARNING
When servicing, use only identical 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.
WARNING
To avoid serious personal injury, always remove
the battery pack from the tool when cleaning or
performing any 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, oil, grease, etc.
WARNING
Do not at any time let brake fluids, gasoline,
petroleum-based products, penetrating oils, etc.
come in contact with plastic parts. Chemicals can
damage, weaken or destroy plastic which may
result in serious personal injury.
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