Stihl FS 88 Instruction Manual - Page 32

ROZ U.S.A./Canada: pump octane

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Fuel Your two-stroke engine requires a mixture of brand-name gasoline and quality two-stroke engine oil with the classification Te. Use regular branded unleaded gasoline with a minimum octane number of 90 ROZ (U.S.A./Canada: pump octane min. 89!). If the octane number of the regular grade gasoline in your area is lower us5=l premium unleaded fuel. Fuel with a lower octane number may result in preignition (causing pinging") which is accompanied by an increase in engine temperature. This, in turn, increases the risk of the piston seizure and damage to the engine. The chemical composition of the fuel is also important. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines etc.), but magnesium castings as well. This could cause running problems or even damage the engine. For this reason it is essential that you use only name branded fuels! Use only STIHL two-stroke engine oil or equivalent branded two-stroke air-cooled engine oils with the classification TC for mixing. We recommend STIHL 50:1 two-stroke engine oil since it is specially formulated for use in STIHl engines. The mix ratio with STIHl oil is 50:1 (50 parts gasoline to 1 part oil), or 25:1 (25 parts gasoline to 1 part oil) with other branded two-strokeair-cooled engine oils. Do not use BIA or TCW (two-stroke water cooled) mix oils! Take care when handling gasoline. Avoid direct contact with the skin and avoid inhaling fuel vapour. The canister should be kept tightly closed in order to avoid any moisture getting into the mixture. The fuel tank and the canister in which fuel mix is stored should be cleaned from time to time. Fuel mix ages: Only mix sufficient fuel for a few days work, not to exceed 30 days of storage. Store in approved safety fuel-canisters only. When mixing, pour oil into the canister first, and then add gasoline. Gasoline Liters STIHL engine oil 50:1 Liters (cc) 1 0.02 (20) 5 0.10 (100) 10 0.20 (200) 15 ",:-0.30 (300) 20 OAO (400) 25 0.50 (500) Gasoline US gal. STIHL engine oil 50:1 US fl.oz 1 2.6 21/2 6A 5 12.8 Other branded TC oils 25:1 Liters (cc) 0.04 0.2 OA 0.6 0.8 1.0 (40) (200) (400) (600) (800) (1000) Other branded TC oils 25:1 US fl.oz 5.1 12.8 25.6 31

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Fuel
Your
two-stroke engine requires a
mixture of brand-name gasoline and
quality two-stroke engine oil with the
classification
Te.
Use regular branded unleaded gasoline
with a minimum octane number of
90 ROZ (U.S.A./Canada: pump octane
min. 89!).
If
the octane number of the
regular grade gasoline
in
your area is
lower
us5=l
premium unleaded fuel.
Fuel with a lower octane number may
result
in
preignition (causing pinging")
which
is
accompanied by an increase
in
engine temperature. This,
in
turn,
increases the risk of the piston seizure
and damage to the engine.
The chemical composition of the fuel
is
also important. Some fuel additives not
only detrimentally affect elastomers
(carburetor diaphragms, oil seals, fuel
lines etc.), but magnesium castings as
well. This could cause running problems
or even damage the engine. For this
reason
it
is
essential that you use only
name branded fuels!
Use only STIHL two-stroke engine oil or
equivalent branded two-stroke air-cooled
engine oils with the classification TC for
mixing.
We recommend STIHL
50:1
two-stroke
engine oil since it is specially formulated
for use
in
STIHl
engines. The mix ratio
with
STIHl
oil
is
50:1
(50 parts gasoline
to 1 part oil), or
25:1
(25 parts gasoline to
1 part oil) with other branded two-stroke-
air-cooled engine oils.
Do not use BIA or
TCW
(two-stroke
water cooled) mix oils!
Take care when handling gasoline.
Avoid direct contact with the skin and
avoid inhaling fuel vapour.
The canister should be kept tightly
closed
in
order to avoid any moisture
getting into the mixture.
The fuel tank and the canister
in
which
fuel mix is stored should be cleaned
from time to time.
Fuel mix ages:
Only mix sufficient fuel for a few days
work, not to exceed 30 days of storage.
Store
in
approved safety fuel-canisters
only. When mixing, pour oil into the
canister first, and then add gasoline.
Gaso-
STIHL
Other branded
line
engine oil
TC
oils
50:1
25:1
Liters
Liters
(cc)
Liters
(cc)
1
0.02
(20)
0.04
(40)
5
0.10
(100)
0.2
(200)
10
0.20
(200)
OA
(400)
15
",:-0.30
(300)
0.6
(600)
20
OAO
(400)
0.8
(800)
25
0.50
(500)
1.0
(1000)
Gaso-
STIHL
Other branded
line
engine oil
TC oils
50:1
25:1
US gal.
US fl.oz
US fl.oz
1
2.6
5.1
21/2
6A
12.8
5
12.8
25.6
31