MTD 1642AVCC - Manual (Page 10)

11 10
OPERATING INSTRUCTIONS
A
B
Do not cut down a
tree during high or
changing winds or if there is a danger to
property. Consult a tree professional.Do not
cut down a tree if there is a danger of
striking utility wires; notify the utility
company before making any cuts.
WARNING:
FELLING
Felling is the term for cutting down a tree. Small trees up
to 6-7 inches (15-18cm) in diameter are usually cut in a
single cut. Larger trees require notch cuts. Notch cuts
determine the direction the tree will fall.
NOTE: Direction of fall (B) is controlled by the notching
cut. Before any cuts are made, consider the
location of larger branches and natural lean of the
tree to determine the way the tree will fall.
A retreat path (A)
should be planned
and cleared as necessary before cuts are
started. The retreat path should extend
back and diagonally to the rear of the
expected line of fall, as illustrated in Fig. 8.
WARNING:
If felling a tree on
sloping ground, the
chain saw operator should keep on the
uphill side of the terrain, as the tree is likely
to roll or slide downhill after it is felled.
CAUTION:
Fig. 8
Fig. 9
Normally felling consists of 2 main cutting operations,
notching (C) and making the felling cut (D).
Start making the upper notch cut (C) on the side of the
tree facing the felling direction (E). Be sure you don t
make the lower cut too deep into the trunk.
The notch (C) should be deep enough to create a hinge
(F) of sufficient width and strength. The notch should be
wide enough to direct the fall of the tree for as long as
possible.
Never walk in front of
a tree that has been
notched.
WARNING:
Never saw completely through the trunk. Always leave a
hinge. The hinge guides the tree. If the trunk is completely
cut through, control over the felling direction is lost.
Insert a wedge or felling lever in the cut well before the
tree becomes unstable and starts to move. This will
prevent the guidebar from binding in the felling cut if you
have misjudged the falling direction. Make sure no
bystanders have entered the range of the falling tree
before you push it over.
Before making the
final cut, always recheck
the area for bystanders, animals or obstacles.
WARNING:
Make the felling cut (D) from the other side of the tree
and 1.5 - 2.0 inches (3-5 cm) above the edge of the
notch (C) (Fig. 9).
G H
Fig. 10
Felling Cut:
1. Use wooden or plastic wedges (G) to prevent binding
the bar or chain (H) in the cut. Wedges also control
felling (Fig. 10).
2. When diameter of wood being cut is greater than the
bar length, make 2 cuts as shown (Fig. 11).
As the felling cut
gets close to the
hinge, the tree should begin to fall. When
tree begins to fall, remove saw from cut,
stop engine, put chain saw down, and
leave area along retreat path (Fig. 8).
WARNING:
STARTING/STOPPING INSTRUCTIONS
Operate this unit only
in a well- ventilated
outdoor area. Carbon monoxide exhaust
fumes can be lethal in a confined area.
WARNING:
C
A B
D
E
F
Never operate the saw
without the bar and
chain properly installed.
WARNING:
1. Mix gas with oil. Fill fuel tank (A, Fig. 3) with fuel/oil
mixture. See Oil and Fuel Mixing Instructions.
2. Fill the oil tank (B) with correct chain and bar oil (Fig. 3).
3. Be certain the
Chain Brake ® is disengaged (C) before
starting unit (Fig. 3).
NOTE: see page 15 fig. 24.
4. Press red STOP switch to the “I” ON position (Fig. 4).
5. Pull the blue lever (D) out as far as it will go until the
blue lever stays out (Fig. 5). This advances the
throttle so you do not have to hold the trigger while
starting.
6. Fully press and release the primer bulb (E) 10 times,
slowly. Some amount of fuel should be visible in the
primer bulb (Fig. 6). If you can’t see fuel in the bulb,
press and release the bulb as many times as it takes
before you can see fuel in it.
7. Place the saw on a firm flat surface. Hold saw firmly
as shown (Fig. 7).
8. Pull the rope with a controlled and steady motion 4
times. Then move the blue lever (D) all the way in (Fig. 6).
9. Hold saw firmly and pull rope until saw starts. This
could take 4 more pulls.
10. Let the saw warm up for 10 seconds. Depress and
release trigger (F) for idle (Fig. 6).
NOTE: In some cases due to operating conditions
(altitude,temperature, etc)your chain saw may
need a slight adjustment to the idle speed.
1. locate idle adjustment screw(G). (fig. 6)
2. if saw will not idle-turn screw clockwise 1/4 to1/2
turn-saw should idle
3. If chain turns while idling turn screw
counterclockwise until chain stops.
11. If engine fails to start, repeat these instructions.
NOTE: When starting a warm engine:
1. make sure switch is on
2. pull blue choke all the way out and then push it back
in-This advances the throttle so you do not have to
hold trigger during starting
3. push primer10x or until you see fuel in the bulb
4. pull rope until engine starts
5. depress and release trigger for idle
STARTING INSTRUCTIONS
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
G
STOPPING INSTRUCTIONS
1. Release the throttle trigger as soon as the cut is
completed, allowing the engine to idle. If you run the
saw at full throttle without a cutting load,
unnecessary wear can occur to the chain, bar, and
engine. It is recommended that the engine not be
operated for longer than 30 seconds at full
throttle.
2. Stop the engine before setting the saw down after
cutting.
NOTE: For emergency stopping, simply activate the
Chain Brake ® and move the STOP switch down.