Fuel - Stihl BR 45 Instruction Manual

english / USA

Fuel

This engine is certified to operate on
unleaded gasoline and with the mix
ratio 50:1.
Your two-stroke engine requires a
mixture of brand-name gasoline and
quality two-stroke engine oil with the
classification TC.
Use regular branded unleaded gasoline
with a minimum octane rating of 89
RON. If the octane rating of the regular
grade gasoline in your area is lower use
premium unleaded fuel.
Note: Units with a catalytic converter
require unleaded gasoline. The
efficiency of the catalytic converter can
drop more than 50 % if several tankfuls
of leaded gasoline are used.
Fuel with a lower octane rating 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!
14
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 STlHL engines.
Do not use BIA or TCW (two-stroke
water cooled) mix oils.
Use only STIHL 50:1 heavy-duty
engine oil or equivalent quality two
stroke engine oils for the fuel mix in
models with a catalytic converter.
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 3 months of storage.
Store in approved safety fuel-canisters
only. When mixing, pour oil into the
canister first, and then add gasoline.
Gaso- Oil (STIHL 50:1 or
line equivalent branded TC oils)
US gal. US fl.oz
1 2.6
2 1/2 6.4
5 12.8
Dispose empty mixing-oil canisters only
at authorized disposal locations.
BR 45