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A manual fuel shut-off valve is required for safe
operations
![](../../tips/rotary.jpg) This valve should be
closed at all times except during normal engine operation. It is especially
important to close it prior to fueling the model.
The manual shut-off valve should be located
such that it is easily reached and closed if a start sequence goes
awry.
If you
suspect that the engine has excess fuel in it prior to a start, purge the
engine as necessary, then begin the next start sequence with the valve closed.
If all is going well during the start, open the valve slowly.
Make it a habit to close
the valve at the end of the engine shutdown procedure.
BVM #5315
Fuel drain holes for fire
prevention
It is a good safety practice to drill a series
of 1/16" holes in the bottom of the fuse (or wings) wherever fuel spills or
leaks from fuel tanks might accumulate.
Additionally drill a few 1/16" holes in the bottom of the
engine bypass duct. A wet spot under your model may alert you to a leaking tank
or an overfill condition. More importantly, eliminating any puddling of fuel in
the model will reduce the risk of a serious fire during a bungled
start-up.
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