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more Irecly and carry with it any foreign matter
which may have found its way into the crankcase
during the running-in process.
Make certain on replacing the screw that it is
made quite light in order to prevent loss of crank-
case compression
1'
n
q u
I9. i ! i ,\
Fig. 8.
Front elevation of unit.
Note.
This drain screw only concerns the crank-
case, and not the gearcase, which can only be
emptied via the plug :1, Fig. 6'
l7
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