Stihl 038 User Manual

22
Fuel
Your two-stroke engine requires a mix-ture of brand-name
gasoline and quality two-stroke engine oil with the classifi-
cation TC.
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 use 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 50:1 TC oils 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) 0.4 (400)
15 0.30 (300) 0.6 (600)
20 0.40 (400) 0.8 (800)
25 0.50 (500) 1.0 (1000)
Gaso- STIHL Other branded
line engine oil 50:1 TC oils 25:1
US gal. US fl.oz US fl.oz
1 2.6 5.1
21⁄2 64 12.8
5 12.8 25.6
Before fueling, clean the filler cap and the area around it to
ensure that no dirt falls into the tank.
Always thoroughly shake the mixture in the canister before
fueling your machine.
Warning! In order to reduce the risk of burns or other
personal injury from escaping gas vapor and fumes, remove
the fuel filler cap carefully so as to allow any pressure
build-up in the tank to release slowly.
Warning! After fueling, tighten fuel cap as securely as
possible by hand.
Use a suitable tool (e.g. screwdriver end of combination
wrench) to tighten slotted fuel caps.
Change the fuel pick up body every year.
Before storing your machine for a long period, drain and
clean the fuel tank and run engine until carburetor is dry.

Stihl 038 Specifications

General

Brand	Stihl
Model	038
Category	Saw
Language	English