Fuel And Pressure Lines; Propeller And Spinner Attachment - O.S. engine FS-52S Owner's Instruction Manual

FUEL AND PRESSURE LINES

Connect suitable lengths of silicone tubing, as
illustrated, after installing the engine.
Attention to tank height
Locate the fuel tank so the top of the tank is
5-10mm(1/4-3/8") above the level of theneedle-valve.
Note: When cutting silicone tubing···
Silicone tubing
Use knife or razor blade
*If you should need to clean out silicone tubes, use methanol
or glow-fuel, not gasoline or kerosene.
Muffler to tank pressure line
Fuel level
5-10mm
Do not use wire cutters
or pliers.
PROPELLER & SPINNER ATTACHMENT
There is a risk, particularly with powerful four-stroke
engines, of the propeller flying off if the prop nut
loosens due to detonation ("knocking") in the
combustion chamber when the engine is operated
too lean, or under an excessively heavy load.
Obviously, this can be very hazardous. To eliminate
such dangers, the O.S. Safety Locknut Assembly was
devised. Fit this as follows:
1. Fit the prop to the engine shaft, followed by the
retaining washer and prop nut and tighten firmly
with a 14mm wrench.
Add the special tapered and slotted locknut and
2.
secure with a 12mm wrench while holding the
prop nut with the 14mm wrench.
Propeller Washer
Lock Nut
12
Propeller Nut