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7.2.5.1 Electrical installation inspection
All electrical cable connections and the connectors must be checked if they are not
damaged, loose or rusty, also check the securing to the construction. If the connectors are
rusty, let the experts replace them.
Check the possible damage to the cables caused by the heat or chafing. Check if all spark
plugs connectors are tightened to the body of the spark plug. Loose connector can be a
reason for its burning and a malfunction of the engine.
Check the level of electrolyte in the battery and refill it with distilled water if necessary.
Recharge the battery regularly if the plane is not in use for longer periods of time.
7.2.6 Spark plugs
Distance between electrodes of the spark plugs 0.7 mm
7.2.7 Special tools
Special tools are not required for normal maintenance performed by the user.
7.2.8 Minor repairs
Considering the type of the construction only minor repairs can be carried out on the surface
of the airplane. For such repairs, use two-component body filler. Clean and ungrease the
damaged surface with technical gasoline and patch it with the body filler mixed according to
the directions for use. After hardening sand it down and varnish the surface.
7.2.9 Changing the fuel filter in the engine area
We can not determine how often the fuel filter should be changed, because it depends on
how well you filter the fuel while filling the tanks.
That is the reason for using fuel filters with clear housing only so you can see the fouling of
the filter. After the first replacement of the filter (maximum after 12 hours) change the filter
every 50 hours.
WARNING
Perform the filter change on a cold engine only
To change the fuel filter:
- close the fuel valve
- remove the seats
- release the buckles on the fuel lines on both sides of the filter, slide them out but do not
remove them completely
- remove the filter while turning the lines smoothly, take care about the fuel leaking from the
lines (you can close the line temporarily by compressing it)
- slide the fuel lines on the new filter and push their ends to the body of the filter
- slide the buckles on the fuel lines in place of mouthpiece of the filter and tighten them, make
sure no buckle is damaged
- secure the buckles of the filter using binding wire
- after changing the filter let the engine run for five minutes with idle setting, then shut it down
and make sure the filter is filled with fuel
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