O.S. Engines 65LA - Manual (Page 16)

Warning: When using a spinner assembly, make
sure that the notches in the spinner shell are
large enough to clear the propeller blades and so
do not cut into and weaken the blade roots.
Tighten the spinner nut firmly so that compression is
first felt as indicated (i.e. with blades horizontal) when
turning the propeller in the direction of arrow.
3 Checking for compression leakage
4 Filling the fuel tank
Check compression
leakage by turning
the propeller up to
this position after
compression is felt.
Compression is first
felt around this posi-
tion when turning
the propeller slowly.
Dribble a few drops
of fuel around the
glowplug and look
for air bubbles.
If leakage is detected, remove the
glowplug, carefully wipe threads,
re-insert and tighten firmly.
Do not allow fuel to overflow into
silencer when refuelling, otherwise
engine may become flooded and
difficult to start.
Re-connect
delivery tube
to engine after
tank is filled.
Fuel pump
Use a fuel can filter
(e.g. O.S. Super Filter).
Do not let dirt or
dust enter fuel can.
Disconnect delivery tube
from the fuel inlet, and
connect it to the tubing
from the fuel pump.
Fuel (model
glow-plug
engine fuel)
15