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Instructions Valach VM 120 B2-4T
8
Crankcase venting
The tube on the crankcase venting is used to remove the surplus oil out of the engine.
Do not extend the tube or reduce the diameter.
Hint: I guide the rests of the oil into a plastic container, that is lled with absorbent cotton
wads (from the dentist). The oil is absorbed by the cotton and will not come out while
the wildest aerobatic maneuvers. I use an empty 100 ml bottle of our silver solder ux
H1. The cap has a double sided tank nipple and eight 3 mm venting holes in it.
Do not omit the venting holes, they are absolutely necessary! The small tube on the
nipple guides the oil in the middle of the cotton in the bottle. I attached the container
with Velcro into the model, so it can be easily removed for draining.
The bottle must be placed lower then the crankcase vent!
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