Operators Manual

32 - English
Repair instructions
7.8 Fuel system
In addition to the fuel tank and carburettor, the fuel
system consists of the air filter, fuel filter and tank
venting.
All these components interact so that the engine
receives the optimal mixture of fuel and air to make
it as efficient as possible. Very small deviations in
the carburettor setting or a blocked air filter have
a large effect on the running and efficiency of the
engine.
The carburettor can come from several different
manufacturers on our models, but the function and
repair methods are essentially the same.
WARNING!
Do not clean not the filter with petrol.
Hazardous!
7. 9 Dismantling and assmbling the Air
filter
Remove the cover over the carburettor and lift off
the air filter. The filter (A) is made of Urethan foam
and must be cleaned with warm soapy water.
The filter (B) is a Felt filter and must be cleaned
with compressed air from the clean side to the
drive side.
A damaged filter should be replaced with a new
filter.
Assembly the air filter in revers order.
7.10 Tank venting
Tank venting takes place through the fuel cap and
needs to be functional for the engine to work.
• Removethefuelhosefromthecarburettorand
empty the fuel from the tank.
• Connectthefuelhosetopressuretesterno.
531 03 06-23.
• Pumpupapressureandvacuumof50kPa(0.5
bar) in the tank.
• Thepressureshoulddropto20kPa(0.2bar)
or revert to atmospheric pressure within 45
seconds.
A
B