5.1. FUEL
Engine fuel is a mixture of
gasoline
and 2-cycle oil. The
correct ratio
of
gasoline
to oil is very important.
Follow
the ratios in the Fuel Mixing Table.
Use regular
grade
unleaded
gasoline
mixed with
McCulloch 40:1
custom 2-cycle engine oil for best
results. Use mixino
ratios in Section 5-3.
CAUTION
@
Never use
straight
gasoline
in
your
unit. Never use a fuel
mixture that has been stored for over
90 days.
This will
cause
permanent
engine damage
and
void the
manufacturer's warranty for
that
product.
CAUTION
@
lf 2-cycle
lubricant other than McCulloch Custom
Lubricant
is to be used, it must be
a
premium
grade
2-cycle oil mixed
at a
40:1 ratio. lf
insufficient lubrication
is
the cause of engine
damage, it voids the
manufacturer's
warranty for that
product.
5-2.
MIXING FUEL
Mix fuel in
a container equipped with
a flexible spout and
strainer.
See the Fuel Mixing Table for the
correct ratio
of
gasoline
to oil. Pour half of
the
gasoline
and all of the
oil
into the container.
Cover the container and shake
vigorously.
Add the rest
of
the
gasoline
and again shake
container to
thoroughly mix fuel and
oil.
GAUTTON
@
Never attempt
to mix
the
gasoline
and lubricating
oil in
the
fuel
tank
of the
unit.
Special starting
fluids
SHOULD NOT
be used because
seals
and other
rubber composition
parts
may be
damaged.
5.3. FUEL
MIXING
TABLE
GASOLINE
McCulloch
40:1 Ratio Custom Lubricant
1/2 U.S.
Gal.
1 U.S. Gal.
2.5 US
Gal.
5 U.>.
(:at.
1.6 oz.
3,2 oz.
8.0
oz.
16.0 oz.
48 ml
(cc)
95 ml
(cc)
237 ml
(cc)
475
ml
(cc)
1 Liter
5 Liters
20 Liters
0.9 oz,
4.3 oz.
17.O oz.
25 ml
(cc)
125 ml
(cc)
500 ml
(cc)
1 lmp. Gal.
2lmp.
Gal,
5lmp. Gal.
4.3 oz.
8.6
oz.
21 .4 oz.
125 ml
(cc)
250
ml
(cc)
52s ml
(cc)
Mixing
Procedute:
40 Part3 Gasoline to 1
Part Lubricant
1ml
=lcc
Ihe use of a fuel additive
such as STA-BILo Gas Stabilizer
or
an equivalent will
mrnimize the fornntion of
fuel
gum
deposits.
Such an additive
should only be used
when the
fuel/oil
mix rs
prepared.
Add 1 1 ml
I
0.4 oz.
per gallon
of
gasoline
or mix
per
instructrons on container.
NEVER add
fuel
additives directly to
the unit fuel tank.
5.4. USE
OF BLENDED
FUELS
Today's fuels
are often a blend
of
gasoline
and one or more oxygenates such
as ethanol, methanol,
MTBE
(ether)
and axonal. These
blends are often referred to as
gasohol, premium
or super unleaded.
We recommend
regular unleaded
gasoline
for
use in
your
McCulloch
product.
However, if
you
choose to use a
blended
fuel or its use is unavoidable,
the following
precautions
are recommended.
1.
Always use fresh fuel mixed
peryou
r
User Manual.
Use the special additive ALCOHOL
PROTECiOR'o
1by
cold Eagle) or
equivalent
to inhibit conosion and
reduce
oiltfuel separation
(mix
as
directed).
Always agitate
the fuel mix before
fueling unit.
Defuel
tank and run engine dry be-
fore
stonng the unit.
PROBLEMS COMMON TO
BLENDED FUELS
Some
oroblems
associated with use of
blended
fuels
include:
.
Vaoor lock
.
Poor warm restart
.
Poor
performance
at high altitudes
.
Corrosron of fuel svstem
corDonentS
GASOHOL USE MAY REQUIRE
CARBURETOR ADJUSTMENTS
Your McOulloch engine
is lubricated by
oil mixed
with
the
fuel. Using
oxygenated fuels
may alter the airlfuel
ratio causing a lean
mix
(lessfuel,
more
atr).
lf this
condition is not corrected by
adjusting the
carburetor, engine
darnage due to
poor
lubrication rnay
result.
Your McCulloch Authorized
Service
Center can make these
adjustments.
a.
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