Cozy III
Pilot’s Operating Handbook Page 59
SCHEDULED
MAINTENANCE/INSPECTIONS
In addition to the schedule listed below, follow the
manufacturer’s recommendations for inspection / maintenance of
engine, accessories, wheels, brakes, etc.
Each 25 Hours
♦ Inspect the prop and spinner for damage or cracks.
♦ Prop bolts - check torque (wood props require 200 in-lb. 35
ft-lb.) and re-safety. Check after initial run, then again at 10
hours (or sooner), and each 25 hours thereafter, or before
next flight when transitioning from humid to dry conditions.
Wood shrinkage in dry environments can cause bolts to
loosen with resultant loss of propeller in flight.
♦ Engine Cowl - Remove and check baffling for cracks.
♦ Engine Oil Change - Every 50 hours for spin-on filters.
♦ Engine Oil Screen - Clean every 50 hour oil change.
♦ Fuel Filters - Remove and clean (gascolator, electric fuel
pump, carb finger strainer).
♦ Carb Float Bowl- Disassemble and check for contamination.
Inspect float needle valve and seat. Look for a gummy
substance, clean if necessary. Perform this inspection each
25 hours until 100 hours, then each annual/100 hour
inspection thereafter.
NOTE
Any contamination (foam, flox, dust, chips, etc.) left in the fuel
system during construction could take 50 hours or more to be
completely purged from the system. Check the filters often
during the first 100 hours. Contaminates can stick in the
gascolator drain valve causing a slight leak. If this happens,
remove the bowl and flush the valve.
♦ Exhaust system - Check for cracks, leaks and security.
Carefully check the four exhaust gaskets for leaks. Never
reuse an exhaust gasket. It is very important to avoid
exhaust leaks if using cabin heater, to prevent fumes from
entering the cockpit.
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