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4 - FUEL AND LUBRICATION
4-1. FUEL
Use regular grade unleaded gasoline mixed with Genuine
McCulloch 40:1 2-cycle engine oil for best results. Use mix-
ing ratios in Section 4-3.
Never use straight gasoline in your unit. This will cause
permanent engine damage and void the manufactur-
er's warranty for that product. Never use a fuel mixture that
has been stored for over 90 days.
If 2-cycle lubricant other than Genuine McCulloch
Lubricant is to be used, it must be a premium grade oil
for 2-cycle air cooled engines mixed at a 40:1 ratio. Do not
use any 2-cycle oil product with a recommended mixing
ratio of 100:1. If insufficient lubrication is the cause of
engine damage, it voids the manufacturer's engine warran-
ty for that occurrence.
4-2. MIXING FUEL
Mix fuel with Genuine McCulloch brand 2 cycle oil in an
approved container. Use mixing table for correct ratio of fuel
to oil. Shake container to ensure thorough mix.
Lack of lubrication voids engine warranty.
4-3.FUEL AND LUBRICATION SYMBOLS
Gasoline and Oil
Mix 40:1
Oil Only
FUEL MIXING TABLE
McCulloch 40:1 Ratio
GASOLINE
Lubricant
1 U.S. Gal.
3.2 oz.
95ml (cc)
5 Liters
4.3 oz.
125ml (cc)
1 lmp. Gal.
4.3 oz.
125ml (cc)
Mixing
40 Parts Gasoline to
Procedure
1 Part Lubricant
1ml=1cc
4-4.RECOMMENDED FUELS
Some conventional gasolines are being blended with oxy-
genates such as alcohol or an ether compound to meet
clean air standards. Your McCulloch engine is designed to
operate on any gasoline intended for automotive use
including oxygenated gasolines.
4-5.CHAIN AND BAR LUBRICATION
Always refill the chain oil tank each time the fuel tank is
refilled. We recommend using Genuine McCulloch Chain,
Bar and Sprocket Oil, which contains additives to reduce
friction and wear and to assist in the prevention of pitch for-
mation on the bar and chain.
10
5 - OPERATING INSTRUCTIONS
5-1. ENGINE PRE-START CHECKS
WARNING
Never start or operate the saw unless the bar and chain are
properly installed.
1.
Fill the fuel tank (A) with correct fuel mixture (Figure
5-1A).
2.
Fill the oil tank (B) with correct chain and bar oil
(Figure 5-1A).
®
3.
Be certain the CHAIN BRAKE
is disengaged (C)
before starting unit (Figure 5-1A).
NOTE: See page 9 Fig. 3-5A & 3-5B.
C
A
5-1A
5-2. TO START ENGINE
1.
Press red STOP switch to the "I" ON position (Fig. 5-
2A).
2.
Pull out the choke (A) to the point where it latches in
place. (Fig. 5-2B)
3.
Push the primer bulb (B) 10 times. (Fig. 5-2C)
4.
Latch throttle advance: depress latch and hold (C)
squeeze throttle trigger (D) release trigger and then
the latch. (Fig. 5-2D)
5.
Place the saw on a firm and level surface. Hold the
saw securely with your foot as illustrated. Pull sharply
on the starter 4 times. Watch the chain in case it runs.
(Fig. 5-2E)
NOTE: Easy Start power assist starting significantly
reduces the pulling effort. Pull the starter cord slowly to
about 3 1/2 feet, the power assist will turn over the engine
with little resistence from the engine.
6.
Push in the choke (E) as far it will go. (Fig. 5-2F)
7.
Hold the saw securely and tug sharply on the starter
4 times. The engine should start.
8.
Let the engine run for 10 seconds to warm up. Press
the trigger (F) and put it into idle. (Fig. 5-2G)
9.
If the engine does not start up, repeat the above
steps.
IMPORTANT IDLING INFORMATION
In some cases due to operating conditions (altitude, tem-
perature etc.) your chain saw may need a slight adjustment
to the idle speed.
After warm up - See the User's Manual section 5-2, step 7
- If unit does not Idle after restarting 2 times, follow these
steps to adjust idle.
1.
Idle adjustment access (G). (Figure 5-2H)
2.
Using a Phillips or slotted screwdriver - turn screw 1/4
to 1/2 turn clockwise (to the right). Unit should then
idle properly. (Figure 5-2H)
NOTE: If chain turns while idling - turn screw back to the
left until chain stops and unit continues to idle.
5-2A
B
B
A
5-2B
C
D
5-2D
A
5-2F
G
5-2F
11
5-2C
5-2E
F
5-2G
5-2G
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