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SINUS motorglider
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Handling and maintenance
CAUTION! Use authorised plastic canisters to transport and store fuel only! Metal canisters
cause for water to condensate on the inside, which may later result in engine failure.
Should you be experiencing slow refuelling with the provided electrical fuel pump, you should re-
place the lter below the pump casing. You can use any fuel lter for this application.
Connecting Auxilliary power supplies
Should you be unable to start the engine due to a weak battery, auxilliary power supplies can be
connected to help starting the engine.
To connect an auxilliary power supply use battery connector cables with clamps at either ends.
Connect the negative (-) wire to aircraft’s exhaust (sticking out below the engine cowlings).
The positive (+) wire leads inside the cockpit to the relay mounted top-right of the aircraft’s battery
on the rewall. This relay has 3 nipples; the positive (+) wire must be connected to the upper-left nip-
ple, the only one to which 2 cables are connected to.
After you have connected the wires correctly, start the engine normally by pressing the starter but-
ton in the cockpit.
WARNING! The pilot must be in cockpit when starting the engine. The person who will
disconnect the cables after the engine has started must be aware of the danger of spinning
propeller nearby.
Battery’s & Relay’s location Battery (black) & Relay (top-right)
Top-left nipple (c. positive (+) wire here) Exhaust (connect negative (-) wire here)
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