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4
Fuel system
In addition to the fuel tank and carburettor, the
fuel system also includes the air filter, fuel filter
and tank vent.
All these components interact to ensure that the
engine will have the optimum mixture of fuel and
air to make it as efficient as possible. Very small
deviations in the carburettor setting, or fouling of
the air filter, have a great effect on the running
and efficiency of the engine.
There are different makes of carburettors on our
different models, but the function and repair
techniques are basically the same.
Air filter
Dismantle the cylinder cover and air filter
cover so that the filter is accessible.
The material in the air filter can be either
felt or fine mesh nylon.
Both types are cleaned with lukewarm
soapy water.
A damaged filter should be replaced with
a new one.
Dismantle the air filter from either the
carburettor or the holder.
Clean also the holder/cover before the
cleaned filter is refitted.
Air filter
Dismantle the cylinder cover and air filter
cover so that the filter is accessible.
The material in the air filter can be either
felt or fine mesh nylon.
Both types are cleaned with lukewarm
soapy water.
A damaged filter should be replaced with
a new one.
WARNING!
Do not clean the filter in petrol. Health
hazard!
NOTE!
The filter must be dry when it is refitted.
!
The air filter can be fitted in different
ways.
● With screws directly on the carburettor
or in a special holder.
● Snap fixture in a special holder.
In the latter case a screwdriver can be
placed between the pins on the filter
and holder to separate both parts.
Clean also the holder/cover before
the cleaned filter is refitted.