Jula 723-076, Operating Instructions Manual

Page: 26 / 28

ENGLISH
26
Adjusting the carburettor
The carburettor is set at the factory for optimum performance. Take your trimmer to an authorised service
centre if any further adjustment is necessary.
Other information

Clean the outside of the machine.

Drain the fuel from the fuel tank.

Start the engine after draining the fuel.

Allow the engine to idle until it stops. This will drain the fuel out of the carburettor.

Allow the engine to cool for about five minutes.

Remove the spark plug with a spark plug spanner.

Pour a teaspoon of pure 2-stroke oil into the combustion chamber. Pull the starter cord slowly a few
times to lubricate the inner components. Replace the spark plug.

Store the machine in a cool, dry place at a safe distance from sources of sparks such as oil burners
and hot water heaters etc.
Using the trimmer after it has been stored away

Remove the spark plug.

Pull the starter cord briskly to remove excess oil from the combustion chamber.

Clean and check the electrode gap on the spark plug, or replace with a new one with the correct
gap.

Get the machine ready for use.

Fill the petrol tank with the correct mixture of oil and petrol. See section on fuel and lubrication.
TROUBLESHOOTING
Problem Cause Action
The machine will not start,
or starts but will not run.

Incorrect starting procedure.

Carburettor set for incorrect
mixture.

Dirty spark plug.

Run out of fuel.

The primer pump has not
been pressed enough times.

Follow the instructions in the
Operating Instructions.

Have the carburettor adjusted by
an authorised service centre.

Clean/check electrode gap, or
replace spark plug.

Fill fuel tank with correct mixture
of fuel.

Press the primer properly and
slowly 10 times.
The machine starts, but
the engine has no power.

The fuel filter is blocked.

Incorrect throttle position.

Spark arrestor guard is dirty.

Dirty air filter.

Carburettor set for incorrect
mixture.

Replace the fuel filter.

Set in position RUN.

Replace spark arrestor guard.

Remove, clean and replace filter.

Have the carburettor adjusted by
an authorised service centre.
The engine falters.

Carburettor set for incorrect
mixture.

The air filter is blocked.

Old fuel or
incorrect mixture.

Have the carburettor adjusted by
an authorised service centre.

Replace or clean air filter.

Empty fuel tank, fill with new fuel
mixture.
No power under load.

Carburettor set for incorrect
mixture.

Old fuel or
incorrect mixture.

The air filter is blocked.

Dirty spark plug.

Have the carburettor adjusted by
an authorised service centre.

Empty fuel tank (see storage)/fill
with new fuel mixture.

Replace or clean air filter.

Replace or clean spark plug.
Runs unevenly.

Incorrect electrode gap on
spark plug.

Spark arrestor blocked.

Dirty air filter.

Clean/check electrode gap, or
replace spark plug.

Clean or replace spark arrestor.

Clean or replace air filter.