Ignition System; Conventional Ignition System (Internal Coil) Lav - Hbl - Av - Mv; Removal Of Flywheel (Not Mv Or Bh Type) - Tecumseh SPECTRA 37 Service And Repair Manual

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E. IGNITION SYSTEM
GENERAL
Two types of ignition systems have been used:
- CONVENTIONAL IGNITION SYSTEM consisting of
flywheel with built in magnets, ignition coil, condenser
and breaker points. Depending on the model and year
of production, the configuration will vary but service on
these systems is identical.
- SOLID STATE SYSTEM (CDI) consisting of flywheel
with built in magnets and a solid state electronic module.
Fig. 1. CONVENTIONAL IGNITION SYSTEM
(Internal coil) LAV - HBL - AV - MV

REMOVAL OF FLYWHEEL (NOT MV OR BH TYPE)

- Remove air shroud complete with starter (Fig 2).
- Remove flywheel nut and starter hub using strap wrench
part number 670305 or 'C' spanner 670217 to prevent
flywheel from turning (Fig 3).
- Using special tool 670103 for 7/16 UNF crankshaft or
670169 for 1/2 UNF crankshaft screw fully on and
back off one turn.
- Supporting the flywheel underneath, strike the tool
squarely with a sharp blow from a hammer to break the
flywheel loose. (Fig 4).
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Fig. 1
Fig. 2
Fig. 3
Fig. 4
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