10
11
4 - FUEL AND LUBRICATION
4-1. FUEL
Use regular grade unleaded gasoline mixed with Genuine
Factory Parts 40:1 custom 2-cycle engine oil for best
results. Use mixing 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 Factory Parts
Custom 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 recommend-
ed mixing ratio of 100:1. If insufficient lubrication is the
cause of engine damage, it voids the manufacturer’s
engine warranty for that occurrence.
4-2. MIXING FUEL
Mix fuel with Genuine Factory Parts 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
FUEL MIXING TABLE
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 satisfactorily on any gasoline intended for automo-
tive 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 Factory Parts
Chain, Bar and Sprocket Oil, which contains additives to
reduce friction and wear and to assist in the prevention of
pitch formation on the bar and chain.
Gasoline and Oil
Mix 40:1
Oil Only
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.
5-2.TO START ENGINE
1. Press red STOP switch to the “I” ON position (Fig. 5-
2A).
2. Pull the blue lever (D) out as far as it will go until the
blue lever stays out (Fig. 5-2B). This advances the throt-
tle so you do not have to hold the trigger while starting.
3. Fully press and release the primer bulb (E) 10 times,
slowly. Some amount of fuel should be visible in the
primer bulb (Fig. 5-2C). 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.
4. Place the saw on a firm flat surface. Hold saw firmly as
shown (Fig. 5-2D).
5. Pull the rope with a controlled and steady motion 4
times. Then move the blue lever (F) all the way in (Fig. 5-
2E).
NOTE:
The unit uses
Smooth Pull™, which
significantly reduces the effort required to start the engine.
You must pull the starter rope out far enough to hear the
engine attempt to start. There is no need to pull the rope
briskly-- there is no harsh resistance when pulling. Be
aware that this starting method is vastly different from (and
much easier than) what you may be used to.
6. Hold saw firmly and pull rope until saw starts. This
could take 4 more pulls.
7. Let the saw warm up for 10 seconds. Depress and
release trigger (G) for idle (Fig. 5-2F).
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 (H). (Figure 5-2G)
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.
5-1A
C
A
B
5-2A
5-2B
D
5-2C
5-2D
E
5-2E
5-2F
F
G
5-2G
5-2H
H
