5.1. FUEL
Enginefuelisamixtureof
gasoline
and2-cycleoil.The
correctratio
ofgasoline
tooilisveryimportant.
Follow
theratiosintheFuelMixingTable.
Use regular
grade
unleaded
gasoline
mixedwith
McCulloch40:1
custom2-cycleengineoilfor best
results.Usemixino
ratiosinSection5-3.
CAUTION
@
Neveruse
straight
gasoline
in
your
unit.Neveruseafuel
mixturethathasbeenstoredforover
90days.
Thiswill
cause
permanent
enginedamage
and
voidthe
manufacturer'swarrantyfor
that
product.
CAUTION
@
lf 2-cycle lubricantother than McCullochCustom
Lubricant
is to be used,it must be a premium
grade
2-cycleoilmixed
ata
40:1ratio.lf
insufficientlubrication
is the cause of engine damage, it voids the
manufacturer's
warrantyforthat
product.
5-2. MIXINGFUEL
Mixfuelin
acontainerequippedwith
aflexiblespoutand
strainer.
SeetheFuelMixingTableforthe
correctratio
of
gasoline
tooil. Pourhalfof
the
gasoline
andallofthe
oil intothe container.Coverthe containerand shake
vigorously.
Addtherest
of
the
gasoline
andagainshake
containertothoroughlymixfueland
oil.
GAUTTON
@
Neverattempt
tomix
the
gasoline
andlubricating
oilin
the
fuel
tank
ofthe
unit.
Specialstarting
fluids
SHOULDNOT
beusedbecause
seals
andother
rubbercomposition
parts
maybe
damaged.
5.3. FUEL MIXING
TABLE
GASOLINE McCulloch
40:1RatioCustom Lubricant
1/2U.S.
Gal.
1U.S.Gal.
2.5US
Gal.
5 U.>.
(:at.
1.6oz.
3,2oz.
8.0
oz.
16.0oz.
48 ml (cc)
95 ml (cc)
237ml (cc)
475ml (cc)
1 Liter
5 Liters
20 Liters
0.9oz,
4.3oz.
17.Ooz.
25 ml (cc)
125ml (cc)
500ml (cc)
1lmp.Gal.
2lmp.
Gal,
5lmp.Gal.
4.3oz.
8.6
oz.
21.4oz.
125ml (cc)
250 ml (cc)
52s ml (cc)
Mixing
Procedute: 40 Part3 Gasoline to 1 Part Lubricant
1ml
=lcc
Ihe useofafueladditive
suchas STA-BILoGasStabilizer
or an equivalentwill
mrnimizethefornntionof fuel
gum
deposits.
Suchanadditive
shouldonlybeused
whenthe
fuel/oil
mixrs
prepared.
Add 11 ml
I0.4oz.
pergallon
of
gasoline
ormix
per
instructronsoncontainer.
NEVERadd
fuel
additivesdirectlyto
theunitfueltank.
5.4. USE
OFBLENDED
FUELS
Today'sfuels
areoftena blend
of
gasoline
andoneormoreoxygenatessuch
asethanol,methanol,
MTBE
(ether)
andaxonal.These
blendsareoftenreferredtoas
gasohol,premium
orsuperunleaded.
Werecommend
regularunleaded
gasoline
for
usein
your
McCulloch
product.
However,if
you
choosetousea
blended
fueloritsuseisunavoidable,
thefollowing
precautions
arerecommended.
1.Alwaysusefreshfuelmixed
peryou
r
UserManual.
UsethespecialadditiveALCOHOL
PROTECiOR'o 1by
cold Eagle)or
equivalent
to inhibitconosionand
reduce
oiltfuelseparation
(mix as
directed).
Always agitatethe fuel mix before
fuelingunit.
Defuel
tankand runenginedry be-
forestonngthe unit.
PROBLEMSCOMMONTO
BLENDEDFUELS
Some
oroblems
associatedwithuseof
blended
fuels
include:
. Vaoorlock
. Poorwarmrestart
. Poor
performance
athighaltitudes
. Corrosronof fuel svstem
corDonentS
GASOHOLUSEMAYREQUIRE
CARBURETORADJUSTMENTS
YourMcOullochengine
islubricatedby
oil mixed
with
the fuel. Using
oxygenatedfuels
mayaltertheairlfuel
ratiocausingalean
mix
(lessfuel,
more
atr).
lf this
conditionis notcorrectedby
adjustingthe
carburetor,engine
darnagedueto poor
lubricationrnay
result.
YourMcCullochAuthorized
Service
Centercan makethese
adjustments.
a.