Additional Safety Rules - Makita 5012B Instruction Manual

center. Don't use tool if switch does not turn it on and
off.
19. GUARD AGAINST ELECTRIC SHOCK. Prevent body
contact with grounded surfaces. For example; pipes,
radiators, ranges, refrigerator enclosures.
20. REPLACEMENT PARTS. When servicing, use only
identical replacement parts.
VOLTAGE WARNING: Before connecting the tool to a
power source (receptacle, outlet, etc.) be sure the voltage
supplied is the same as that specified on the nameplate of
the tool. A power source with voltage greater than that
specified for the tool can result in SERIOUS INJURY to
the user - as well as damage to the tool. If in doubt, DO
NOT PLUG IN THE TOOL. Using a power source with
voltage less than the nameplate rating is harmful to the
motor.

ADDITIONAL SAFETY RULES

1. Grip Saw Firmly.
Hold the chain saw firmly with both hands when the
motor is running. Use a firm grip with thumbs and
fingers encircling the chain saw handles.
2. Clear Work Area
Do not start cutting until you have a clear work area,
secure footing, and a planned retreat path from the
falling tree.
3. Stay Alert
Keep all parts of the body away from the saw chain
when the motor is running. Before you start the saw,
make sure the saw chain is not contacting anything.
4. Carrying Saw
Carry the chain saw by the front handle with the saw
stopped, finger off the switch, the guide bar and saw
chain to the rear.
5. Damaged Parts
Do not operate a chain saw that is damaged,
improperly adjusted, or is not completely and securely
assembled. Be sure that the saw chain stops moving
when the trigger is released.
6. Consider Work Environment
Use extreme caution when cutting small size brush
and saplings because the slender material may catch
the saw chain and be whipped toward you or pull you
off balance. Do not operate a chain saw in a tree
unless specifically trained to do so. When cutting a
limb that is under tension be alert for spring back so
that you will not be struck when the tension in the
wood fibers is released.
7. Maintain Chain Saw With Care
Keep cord clear of the chain and operator at all times.
Never carry saw by the cord or pull it to disconnect
from receptacle. Keep handles dry, clean, and free
from oil. When storing saw use a scabbard or carrying
case.
8. Guard Against Kickback
Kickback is the backward or upward motion of the
guide bar or both when the saw chain near the nose of
the top area of the guide bar contacts any object such
as a log or branch, or when the wood closes in and
pinches the saw chain in the cut. Kickback can lead to
dangerous loss of control of the chain saw. To avoid
6
kickback: (1) Hold the chain saw firmly with both
hands. (2) Don't over reach. (3) Don't let the nose of
the guide bar contact a log, branch, ground or other
obstruction. (4) Don't cut above shoulder height.
(5) Follow manufacture's sharpening and
maintenance instructions for the chain saw for better
and safer performance. Follow instructions for
lubricating and changing guide bars. (6) Use devices
such as low kickback chain, guide bar nose guards,
chain brakes and special guide bars that reduce the
risks associated with kickback.
9. Power Supply
Connect chain saw to correct voltage, that is, be sure
that the voltage supplied is the same as that specified
on the name plate of the tool.
10. Wear ear protectors during operation.
11. Before making a felling cut, remove dirt, stones, loose
bark, nails, staples and wire from the tree.
12. Secure the log so that it will not roll or move suddenly
during operation.
13. Attention! Do not expose this tool to rain and pull plug
immediately if the supply cable be damaged or cut.
14. The chain saw must not be left outdoors during rain
and it must not be used when wet.
SAVE THESE INSTRUCTIONS.
Installing saw chain and guide bar
Use the socket wrench to loosen the hex bolt holding the
chain cover. Remove the chain cover. (Fig. 1)
Fit one end of the chain over the sprocket and the other
over the end of the guide bar. Notice that the cutters must
be in the direction of the arrow in Fig. 2 and 3. Keep the
chain in the guide bar grooves.
• Install the guide bar so that the lower hole in the guide
bar is just over the adjusting pin.
• Install the chain cover and tighten the hex bolt only
tight enough to hold the guide bar temporarily.
Adjusting saw chain tension
Grasp the chain in the middle of the guide bar and lift up.
The gap between the side link of the chain and the guide
bar should be about 3 mm to 4 mm. (Fig. 4)
If the gap is not about 3 mm to 4 mm, adjust the chain
tension. Use a screwdriver to turn the chain tension
adjusting screw clockwise for more tension, or
counterclockwise for less tension. When adjusting the
chain tension, lift the end of the guide bar slightly. (Fig. 5)
After adjusting the chain tension, use the socket wrench
to tighten the hex bolt securely. (Fig. 6)
CAUTION:
When breaking in a new chain, adjust the tension often,
since it tends to "stretch".
Oil tank inspection
Be sure there is enough oil in the oil tank before you begin
sawing operations. There is an oil tank inspection window
on the side opposite the chain cover. Replenish with oil if
the level is low. (Fig. 7)
Oiling
Press the manually-operated oil plunger to oil the saw
chain. Depress 2-3 times for every log having a diameter