About The Engine; Operating Instructions; English - MTD OHV Series Original Operating Instructions

Operating manual for engine
– Before carrying out any work,
e.g. settings or repairs, always
remove the spark plug terminal
and keep it away from the spark
plug.
– For ignition tests, use an
authorised ignition tester only.
– Conduct an ignition test on
a spark plug which has been
removed.
Risk of burns!
!
Risk of fire!
A running engine generates heat.
Engine parts, especially the
exhaust, are extremely hot. Do not
touch, otherwise you could receive
severe burns.
Flammable objects such as leaves,
grass, bushes, etc. may catch fire.
– Do not touch the exhaust,
cylinder block or cooling fins until
they have cooled down.
– Keep children away from a hot or
running engine.
– Remove flammable objects from
the vicinity of the exhaust and
cylinder.
Risk of electric shock!
!
Risk of fire!
Ignition sparks may cause a fire or
electric shock.
Risk of injury!
!
Rotating parts may touch or catch
hands, feet, hair, clothing or
clothing parts. This may result in
serious injuries.
– Operate the unit with installed
guards only.
– Keep hand and feet away from
rotating parts.
– Before starting work, tie back
long hair and remove jewellery.
– Do not wear loose-fitting clothing,
hanging strings or parts which
could become caught.
Risk of injury!
!
The quick retraction of the starter
cable (recoil, e.g. caused by
a misfire) will pull your hand and
arm towards the engine more
quickly than you can release the
starter handle. This may result in
injuries.
– To start the engine, slowly pull
the starter handle until it begins
to resist, then pull in one go.
– Before starting the engine,
remove all objects situated on
the engine.
– Directly connected components,
such as cutters, fan impeller,
drive parts, etc., must be
attached securely.
Risk of injury!
!
Damage to the unit!
Do not change the engine settings
which were preset at the factory.
Symbols on the unit
Safety instructions and warning
instructions, illustrated with
symbols or pictograms, can be
found on the engine. The symbols
have the following meanings:
Caution! Warning –
!
danger source.
Read operating
instructions before
starting the unit!
Warning – hot
surface!
Warning – toxic
vapours!
Do not use the unit in
the rain!
Petrol is flammable!
Use unleaded fuel!
Always ensure that these symbols
on the unit are legible.

About the engine

These operating instructions
describe different models.
The graphical representations may
differ in detail from the unit which
you purchased.
Compare Fig. 1 with your unit and
make sure you know where the
different controls and regulators
are located.
Fig. 1
1 Fuel cap
2 Starter handle
3 Oil filler cap/dip stick
4 Oil drain screw
5 Exhaust
6 a) Spark plug
b) Spark plug terminal
7 Primer (depending on model)
8 Air filter
9 Engine cover

Operating instructions

Checks to be carried out
before operating the unit
Recommended oil grades
Caution!
The unit is supplied without fuel
and oil in the engine. If the engine
is operated without adequate oil,
the engine may be seriously
damaged. This damage is
excluded from the warranty.
Before starting the engine,

fill with oil.
Do not pour in too much oil.
The oil tank has a capacity of
approx. 0.4 litres.
Use 4-stroke oil of classification
SF/SG/SH/SJ only.
Select the viscosity of the oil from
the following table depending on
the outside temperature:
10w
a
b 20w40, 20w50
15w40, 15w50
10w40
10w30
(ºC) -30º -20º -10º 0º 10º 20º 30º40º
a) Single viscosity
b) Multiple viscosity
SAE 10W-30 is recommended
for general use in the normal
temperature range.

English

20w
20
30
40
5