PIK-20 E Service manual
The engine hourmeter and an optional barograph are operated directly
by the alternator. They cannot be switched off and are only operating
when the engine is running.
The ignition switch is a dual switch and beside of the function as an
ignition shut off, it operates the tachometer and the fuel quantity gau
ge.
The ignition line is also connected to the microswitch and the ignition
is shut off when the engine is not fully extended.
The condition of the battery and the function of the alternator can be
checked by the voltage meter. The line between the red and black area
corresponds to 12 volts.
2.3 Fuel system
| The fuel capacity is 29 litres, of which 28 litres are usable. The fuel tank
is situated behind the backrest. Filler opening is on the fuselage
between the canopy frame and the wing: The fuel valve is situated on
the tank.
The fuel quantity can be checked from the electrical quantity gauge.
The fuel tank vent, in the cap, should be inspected daily prior to first
flight that it is free from obstruction. To avoid accumulation of the wa
ter and sediment, the fuel in the tank should be examined daily prior to
first flight and after refueling, by using the sampler cup provided to
drain fuel from the tank. The drain valve is situated on the left fuselage
side.
The fuel filter is an inline paper filter type with 16 #jm filtration (0.6
microin) and nominal capacity 60 l/h (e.g. Purolator 00610). The filter is
in the baggage compartment after the fuel cock. The filter should be
changed every 25 hours or yearly.
The auxiliary electric fuel pump is a solid state type and situated down
in the engine compartment.
The primary pump is an engine driven impulse type.
The carburettors are provided with a return line to avoid airbubbles in
the fuel feed.
Inspect and clean the tank carefully every year.
EIRI KY -
Kisällinkatu 8
SF-15170 Lahti 17
page II-8
Revision 1.21.8-79
