Ryobi P310 Operator's Manual page 13

STARTING/STOPPING THE CAULK GUN
See Figure 5.
Before attempting to start the caulk gun, be sure the switch
lock is in the unlocked position.
n To turn the caulk gun ON, depress the switch trigger.
n To turn the caulk gun OFF, release the switch trigger.
LOCKING THE SWITCH TRIGGER
See Figure 5.
The switch trigger of the caulk gun can be locked off using
the slide switch located below the switch trigger.
n To lock the switch trigger, slide the switch lock up. This
will prevent the caulk gun switch trigger from being de-
pressed.
n To unlock the switch trigger, slide the switch down. This
will allow the caulk gun switch trigger to be depressed.
LOADING CAULK
See Figures 6 - 7.
n Lock the switch trigger by sliding the switch lock up.
n Using a utility knife, cut off the tip of the spout on a
standard 10 oz. tube of caulk. Cut the tip at a 45˚ angle.
Remove as little as possible, taking into consideration
the size of the "bead" of caulk you need.
n Check for a second inner seal at the base of the spout. If
found, insert the puncture tool inside the spout to break
the seal before using. If using a partially filled tube, use
the puncture tool to remove any hardened material from
the tip.
NOTE: An inner seal is usually found only in cardboard
caulk tubes.
n While holding the caulk gun steady with one hand, pull
the handle of the plunger rod away from the caulk gun.
Continue pulling until plunger base reaches the back of
the carriage frame.
n Load the caulk tube into the carriage frame, making sure
it is well seated at both ends.
ELECTRONIC OVERLOAD PROTECTION
The caulk gun is protected by an electronic overload protec-
tion 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:
n Nozzle tip is cut
n Inner seal in the caulk tube is broken
n Hardened material is removed from the nozzle
n Caulk tube is not damaged or frozen
n Plunger rod is free of caulk/adhesive materials
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
OPERATION
TO
TURN OFF
TURN ON
SWITCH
TRIGGER
SPOUT
SPOUT
3
trigger again. If the motor continues to shut off, try another
tube of material or take the tool to an authorized service
center.
13
TO
PUNCTURE
TOOL
CAULK TUBE
2
LOCK
UNLOCK
SWITCH LOCK
Fig. 5
CARRIAGE
FRAME
Fig. 6
PLUNGER ROD
HANDLE
1
PLUNGER
ROD
Fig. 7