Maintenance - Yamato CD 20 BL Instruction Manual

mod. CD 20 BL (cod. 83513)
Screw driving operation
CAUTION: Adjust the adjusting ring to the proper torque level for your work.
CAUTION: Make sure that the driver bit is inserted straight in the screw head, or the screw and/or
driver bit may be damaged.
Place the point of the driver bit in the screw head and apply pressure to the tool. Start the tool slowly and then
increase the speed gradually. Release the switch trigger as soon as the clutch cuts in.
NOTE: When driving wood screw, pre-drill a pilot hole 2/3 the diameter of the screw. It makes driving easier
and prevents splitting of the workpiece.
Drilling operation
First, turn the adjusting ring so that the arrow points to the
Drilling in wood
When drilling in wood, the best results are obtained with wood drills equipped with a guide screw. The guide
screw makes drilling easier by pulling the drill bit into the workpiece.
Drilling in metal
To prevent the drill bit from slipping when starting a hole, make an indentation with a center-punch and
hammer at the point to be drilled. Place the point of the drill bit in the indentation and start drilling.
Use a cutting lubricant when drilling metals. The exceptions are iron and brass which should be drilled dry.
CAUTION: Pressing excessively on the tool will not speed up the drilling. In fact, this excessive pressure will
only serve to damage the tip of your drill bit, decrease the tool performance and shorten the service life of the
tool.
CAUTION: Hold the tool firmly and exert care when the drill bit begins to break through the workpiece. There
is a tremendous force exerted on the tool/drill bit at the time of hole break through.
CAUTION: A stuck drill bit can be removed simply by setting the reversing switch to reverse rotation in order
to back out. However, the tool may back out abruptly if you do not hold it firmly.
CAUTION: Always secure workpieces in a vise or similar hold-down device.
CAUTION: If the tool is operated continuously until the battery cartridge has discharged, allow the tool to rest
for 15 minutes before proceeding with a fresh battery.

MAINTENANCE

CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed before
attempting to perform inspection or maintenance.
NOTICE: Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be
performed by YAMATO Authorized or Factory Service Centers, always using YAMATO replacement parts.
CAUTION: These accessories or attachments are recommended for use with your YAMATO tool
specified in this manual. The use of any other accessories or attachments might present a risk of injury to
persons. Only use accessory or attachment for its stated purpose.
marking. Then proceed as follows.