Flylight Airsports SkyRanger Nynja 600, Operator'S Maintenance Manual

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SkyRanger Nynja 600 Operators Manual issue 1
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and then a suitable plastic cleaner like Plexus can be used sparingly
to remove streaks. Avoid such a product from soaking in behind
rivets – where it can collect, and cracks may propagate over time.
Warning - Fuel spillage or contact with Loctite will cause almost
instant cracking of Lexan.
9.13 Engine mount rubbers
9.13.1 Engine mount rubbers slowly wear out over time. They should be
changed ‘On Condition’:
9.13.2 They should be changed if external signs of cracking / perishing are
present.
9.13.3 They should be changed if excessive movement is present. Check this
in the following way:
Remove the engine bonnet
Grasp the propeller near the hub
Lift up and down, side to side, and diagonally.
Observe the rubbers and movement relative to the mounting
structure. Movement confined to rubber flexing is fine. Clear
movement of the whole rubber parts relative to the hole in the
mounting structure indicates that the rubber should be replaced.
9.14 Fuel tanks
9.14.1 The fuel tanks are clear polyethylene. Taking off the tank caps results
in the ability to look directly inside. Any dirt / water or other
contamination is easy to see. Using the drain valve will remove most
of this, but inevitably some is left in the corners and over the front of
the ‘saddle’ of the tanks.
9.14.2 A useful technique to clean these areas is to make up a siphon tube
using a length of small diameter aluminium tube connected to a
length of flexible pipe. This can be directed and used as a very
effective ‘Hoover’ to clean all small remaining particles.
9.14.3 The fuel tanks will yellow over time and should be changed on
condition. The rubber type fuel tank fittings may degrade over time,
and we recommend that those submerged in fuel are changed every
five years.