Magneto Inspection - Piper PA-44-180 SEMINOLE Maintenance Manual

CHART 7401. TROUBLESHOOTING (MAGNETO) (cont.)
Trouble
Low power and uneven
running.
Failure of engine to develop
full power.
ELECTRICAL POWER SUPPLY.
MAGNETOS.
INSPECTION OF MAGNETO.
Comply with Bendix Service Bulletin No. 608 at first opportunity, but no later than
next magneto overhaul. Install self-locking cam retaining screw (10-391213) and
torque 21-25 inch-pounds. If self-locking screw is removed at any time, always
replace with new self-locking screw and torque to the specified value.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
Cause
Defective spark plugs.
Magneto breaker points not
working properly.
Defective ignition wire.
Defective spark plug terminal
connectors.
Faulty ignition.
— Note —
3F19
Remedy
Clean and gap or replace
spark plugs.
Clean points. Check internal
timing of magnetos.
Check wire with electric
tester. Replace defective wire.
Replace connectors on spark
plug wire.
Tighten all connections.
Check system with tester.
Check ignition timing.
Page 74-02
Revised: May 15, 1989
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