McCulloch TM502 - Manual (Page 7)

3-1. BAR & CHAIN REMOVAL AND
INSTALLATION
You will need these tools to work on your chain saw:
1.
Combination wrench-screwdriver (contained in your
user’s kit or in lid of carry case).
2. Heavy duty work gloves (user supplied).
3-2. BEFORE STARTING YOUR SAW
Your new chain saw will require adjustment of chain, filling
the fuel tank with correct fuel mixture and filling the oil tank
with lubricating oil before the unit is ready for operation.
WARNING
DO NOT start saw engine until unit is properly prepared.
Read the entire user manual before attempting to operate
your unit. Pay particular attention to all safety precautions.
Your user manual is both a reference guide and handbook
provided to furnish you with general information to assem-
ble, operate and maintain your saw.
3-3. GUIDE BAR / SAW CHAIN / CLUTCH
COVER REMOVAL OR INSTALLATION
WARNING
Always wear protective gloves when handling chain.
CAUTION
To ensure the bar and chain receive oil, ONLY USE THE
ORIGINAL STYLE BAR with the oil passage hole (A) as
illustrated above (Figure 3-3A).
1. Make sure the CHAIN BRAKE
® lever is pulled back into
the DISENGAGED position (Figure 3-3B)
2. Remove the 2 bar retaining nuts (B). Remove the
CHAIN BRAKE ® cover (C) (Figure 3-3C). Remove outer
guide bar plate (M). (Figure 3-3K)
3. Carefully remove chain & bar.
4. Using a screwdriver, run the adjustment screw (D)
COUNTERCLOCKWISE until the TANG (E) (projecting
prong) is to the end of its travel toward the clutch drum
and sprocket (Figure 3-3D).
5. Place the slotted end of the guide bar over the 2 bar
bolts (F). Position the bar so that the adjustment TANG
fits into the lower hole (G) on the guide bar (Figure 3-
3E).
6. Spread chain out in a loop with cutting edges (H) point-
ing CLOCKWISE around loop (Figure 3-3F).
THE PUSH (PINCH-KICKBACK) AND PULL
REACTIONS (Figure 2-4B)
A = Pull
B = Solid objects
C = Push
KICKBACK may occur when the NOSE or TIP of the guide
bar touches an object, or when wood closes in and pinch-
es the saw chain in the cut.
Tip contact in some cases may cause a lightning-fast
reverse reaction, kicking the guide bar up and back toward
the operator.
PINCHING the saw chain along the BOTTOM of the guide
bar may PULL the saw forward away from the operator.
PINCHING the saw chain along the TOP of the guide bar
may PUSH the guide bar rapidly back toward the operator.
Any of these reactions may cause you to lose control of the
saw, which could result in serious personal injury.
2-5. KICKBACK SAFETY LABELS
Your McCulloch Chain Saw is provided with a safety label
located on the chain brake lever. This label, along with the
safety instructions on these pages, should be carefully read
before attempting to operate this unit.
HOW TO READ SYMBOLS AND COLORS:
WARNING
Used to warn that an unsafe procedure should not be per-
formed.
RECOMMENDED
Recommended cutting procedures.
WARNING
(Figure 2-5A)
1. Beware of kickback.
2. Do not attempt to hold saw with one hand.
3. Avoid bar nose contact.
RECOMMENDED
4. Hold saw properly with both hands.
GREEN
RED
2-4B
A
C
B B
6 7
The engine exhaust from this product contains chemi-
cals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
WARNING
2-5A
2-6. INTERNATIONAL SYMBOLS
Wear head, eye and hearing protection.
Wear gloves to protect your hands.
Wear safety boots to protect against electric shock.
Read User Manual.
Use of these personal safety items is
highly recommended to reduce the risk
of accidental injury.
2 - SAFETY PRECAUTIONS
A
3-3A
3 - REMOVING & INSTALLING BAR & CHAIN
3-3B
1 2
3 4
3-3C
B
C
3-3D
3-3E
3-3F
H
D
E
F
G