CRAIN 718 Instruction Manual

NO. 718
POWER SCRAPER

INSTRUCTION
MANUAL
FOR

THIN SPUD BLADE

1

OPERATING INSTRUCTIONS: Read and save all instructions!

SAFETY FIRST: Use machine in accordance with instructions only!

� Blades are extremely sharp. Use extreme caution when loading and unloading

blades from the blade carrier. The use of protective gloves is advisable during
blade change. In use, keep away from the blade and oscillating blade carrier.

� Before changing blades or servicing the machine, the machine must be switched

OFF and UNPLUGGED. When changing the blade, place a short wood block
under the machine to hold the blade carrier off the oor surface. DO NOT lean the
machine back on its extendable handle for changing a blade, as this can result
in unexpected tipping forward or other unexpected motion.

� Keep all body parts at a safe distance from the blade when the motor is running,

including those of helpers or bystanders. Keep feet and hands out from under
the machine. WARNING: after the motor is switched off, the internal mechanisms
and blade may continue oscillating for a short period of time. Keep away!

� A blade should be loaded in the blade carrier during the stripping operation ONLY.

Blades should be removed and safely stored during transportation and storage.

� Wear safety glasses, ear protection and gloves. This machine produces dust.

Exposure to all kinds of dust can cause respiratory ailments. Check material to be
removed to determine if it contains asbestos or other materials that are hazardous
to be inhaled. Asbestos-containing materials should be removed by accredited
abatement professionals. Use approved NIOSH or OSHA respirators, and provide
adequate ventilation to eliminate or maintain dust below the threshold limit value
for nuisance dust as classied by OSHA. Paper masks may not be adequate.

� Keep hands and ngers away from the motor fan cover. Internal fan can cut off

ngers if contacted!

� Keep children and bystanders out of the work area. This machine is not to be

used by children or persons with reduced physical, sensory or mental ability, or
that lack experience and knowledge. DON'T ALLOW RIDERS ON THE MACHINE!

� DANGEROUS ENVIRONMENTS: Use and store this machine only in dry areas.

Don't expose to rain or incursion of any liquids. Liquids in internal parts partic­ularly motor, switch, and cords can create a shock hazard! Do not operate the
machine when the oors in the area are wet. Don't use machine where ammable
objects or explosive gases may be present, as the machine can throw sparks.
Make sure the work area is well lit. Remove nails from the oor prior to using the
machine. When operating over a concrete suboor, beware of expansion joints
or other obstructions that can cause the machine to stick and stop unexpectedly
or kick back. Keep the machine and blade a good distance from oor mounted
electrical receptacles. Inspect for and keep clear of covered or hidden wiring.

� ACCIDENTAL STARTING: The switch of your machine should be checked to

determine that it is in proper working condition before each use. If the switch
becomes damaged, repair it immediately before further use. Make sure that the
machine is switched OFF before connecting it to power.

� GROUNDING: The cord of this machine includes a three-prong plug for grounding.

2

DO NOT remove the ground pole for use in a two-prong outlet. If necessary, use

an adaptor to a two prong plug, and always ensure proper grounding. Plugging
in to a GFI outlet is recommended. Make sure extension cords are grounded.

� CORD ABUSE: In operation, use caution not to step on the cord (or any attached

extension cord). Also use caution not to cut the cord (or any attached extension
cord) with the blade. Don’t yank the cord to remove the plug from the electrical
socket or any other reason. For best performance, we recommend that 14 gauge
or heavier extension cords be used with this machine. As the length of extension
cord increases, a heavier cord must be used to assure proper performance of
the machine and prevent damage. Maximum extension cord length should be
50 feet. If cord, plug, or extension cords are damaged, repair or replace before
further use. Unplug cord and any extension cord before transporting the machine.

� BLADES AND ACCESSORIES: For your safety, do not modify the machine in

any way. Use only Crain replacement blades and replacement parts. Use of
other blades, accessories, or unauthorized modications made to the machine
can result in hazardous conditions. Make sure blades are clean and sharp. Dull
blades place a heavy load on the machine that can result in overheating, unex­pected sticking of the machine, or kickback. Prior to switching the machine on,
remove any wrenches or other tools temporarily attached to it for blade change,
repair, etc.

� SAFE APPAREL: Keep gloves, loose clothing and hair away from moving parts.

Keep loose hair tied back. These can get caught up in moving parts. Protect feet
and toes with proper work boots and good tread to prevent slipping and falling.
Wear rubber gloves and rubber-soled boots that provide electrical insulation.

� MACHINE IS HEAVY: Users with adequate strength should move the machine

with caution and proper lifting technique. Be careful not to drop the machine
onto feet or other body parts. Dropping or lowering the machine with excessive
force (particularly on the blade carrier) can damage internal mechanisms. Store
safely in a place that prevents the machine from falling. Keep children away from
the machine.

� LEAD-BASED PAINT & OTHER DUST HAZARDS: See appendix for more info.

ASSEMBLY: (Switch off and unplug the machine during all assembly steps)

The Power Scraper comes complete with the following (see Figure 1):

� Motor
� Extendable Handle
� Vinyl, Multi-Purpose, and Spud Blades

EXTENDABLE
HANDLE

MOTOR
FAN COVER

No. 701
VINYL BLADE

No. 705
MULTI-PURPOSE
BLADE

No. 719
THIN SPUD
BLADE

MOTOR

Figure 1

3

� Switch off and unplug the machine. A T-wrench is provided for loosening blade

screws (Figure 4).

� To change the blade, raise the blade carrier off the oor by placing a short piece

of wood beneath the machine to provide clearance (Figure 4). DO NOT lean the
machine back on its extendable handle for changing a blade, as this can result
in unexpected forward tipping or other unexpected motion.

� When the machine is in a stable and safe position, remove the blade screws

currently installed in the blade carrier, and remove the blade clamp.

� NOTE: Crain blades with slots can be changed

by loosening blade screws a few turns, pulling
out previous blade, then installing the new blade.
The blade screws and blade clamp do not need
to be fully removed.

INSTALLING AND CHANGING BLADES:

INNER

MIDDLE

OUTER

Figure 5

� The extendable handle (Figure 2) has two square extension tubes that insert into

the square tubes of the motor (Figure 3). Adjust to desired height, then tighten
the T-bolts in the square tubes. For starters, adjust handle to about waist height.

ASSEMBLING THE EXTENDABLE HANDLE:

Figure 2 Figure 3

SQUARE
TUBE

EXTENDABLE
HANDLE

MOTOR
FRAME
SQUARE
TUBES

T-BOLT

GRIP

Figure 4

T-WRENCH

BLADE
SCREWS

BLADE
CLAMP

No. 701
VINYL BLADE

WOOD
BLOCK

Figure 6

BLADE
SLOTS