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- 2026-10-05
Featured Avco Lycoming manuals
Avco Lycoming L-649A Gear Reduction Starting Motor Service Manual
This service publication describes the aircraft starting motor with gear reduction drive. It explains the motor's construction, operation principles, wiring, and the required inspection and maintenance procedures. Detailed instructions are provided for removal, disassembly, inspection, lubrication, re‑assembly and bench testing of the motor.
The manual also includes a parts list for the L‑649A series, specifications for voltage loss limits, recommended grease quantities, and test procedures for both the starting motor and associated alternator and voltage regulator units.
Covers: Operation · Maintenance · Overhaul · Bench Tests · Service Parts List · Alternator Bench Test
Latest Avco Lycoming manuals
Avco Lycoming L-649A Gear Reduction Starting Motor Service Manual
Service Manual 155 pages · 7.8 MB · ENService manual for the Avco Lycoming L-649A gear reduction starting motor, covering operation, maintenance, overhaul and bench testing.
Which document do I need?
Service Manual
Disassembly, diagnostics and part numbers, for repair.
Questions answered in Avco Lycoming manuals
What is the maximum allowed voltage loss between the battery post and the starting motor terminal?
The voltage loss must not exceed 0.3 volts.
From: Avco Lycoming L-649A Gear Reduction Starting Motor Service Manual
How often should the starting circuit be inspected?
Inspections should be performed at least twice a year.
From: Avco Lycoming L-649A Gear Reduction Starting Motor Service Manual