MAINTENANCE MANUAL EXTRA 300/SC
CHAPTER 05
PAGE 15
PAGE DATE: 1. August 2014
Inspector:
Mechanic:
Date:
Serial No.:
Inspections
as specified
each 50 hours
each 100 hours
O
1
13 Clean and flush the Inverted Oil System with a suitable petro-
leum solvent, such as varsol according to Lycoming Opera-
tor’s Manual.
O
2
O O 14 Service engine with recommended lubricating oil in accord-
ance with Chapter 12-10-04.
O O 15 Inspect condition of spark plugs (clean and adjust gap as
required, adjust per Lycoming Service Instruction 1042). If
fouling of spark plugs has been apparent, rotate bottom plugs
to upper plugs and vice versa.
O O 16 Inspect spark plug cable leads and ceramics for corrosion and
deposits.
O O 17 Perform a hot engine differential compression check in ac-
cordance with Chapter 72-30 of the Lycoming AEIO-580-
B1A Maintenance and Overhaul Manual .
O 18 Inspect cylinders for cracked or broken fins.
O O 19 Check cylinders for evidence of excessive heat which is
indicated by discoloration.
O 20 Check fuel injector nozzles for loseness. Tighten to 60 inch
pounds torque. Check fuel lines for fuel stains which are
indicative for fuel leaks.
O O 21 Inspect rocker box covers for evidence of oil leaks. If found,
replace gasket; torque cover screws 50 Inch-pounds.
O
3
22 Remove rocker box covers and check for freedom of valve
rockers when valves are closed. Look for evidence of abnor-
mal wear or broken parts in the area of valve tips, valve keeper,
springs and spring seats.
SCHEDULED MAINTENANCE CHECKS
Maintenance Checks Schedule
1 each 300 hours
2 each 25 hours
3 each 400 hours
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