INSTALLING MAGNETRONT" MODULE

TM 5-4240-501-14P IGNITION MAGNETRON^TM INSTALLING MAGNETRONT" MODULE Module is installed in reverse order of removal. Note that module retainer must be on back side of coil laminations, Fig. 8. Use Permatex’" or similar sealant to hold ground wires in place, Fig. 8 Ignition timing is controlled by the location of the flywheel and crankshaft keyways on aluminum engines. On cast iron engines, refer to page 9. Fig. 8 - Starter Clutch On flywheels of 6-3/4" (171 mm) diameter or less, use flywheel holder 19167, to keep flywheel from turning. On rope starter engines, the 1/2" diameter thread flywheel nut is left handed and the 5/8" diameter thread is right handed. Fig. 9. Starter clutch used on rewind and wind-up starter has a right hand thread. Fig. 10. Remove clutch using P/N 19114 starter clutch wrench or P/N 19244 or 19161 1/2" square drive starter clutch wrench. For flywheels or larger diameter place a block of wood under flywheel fin to prevent flywheel turning while loosening nut or starter clutch. Clamp engine base securely. Fig. 11. Fig. 9 Loosen Flywheel, Rope Starter (1/2" Dia. Threads) Figure. 10 - Loosening Flywheel Rewind Starter and Wind-up Starter Engines Fig. 11 - Loosening Large Flywheels Remove Flywheel Some flywheels have two holes provided for use of a flywheel puller. Use puller shown in Table 1. Leave nut loose on threads of crankshaft for puller to bear against, Fig. 12. Small cast iron flywheels do not require a flywheel puller. See note below. Fig. 12 - Removing Flywheel NOTE : To remove small cast iron flywheels without puller holes. support the flywheel with a gloved hand. exerting an upward pull. Using a rawhide hammer. strike the outside rim of the flywheel with a sharp blow. Several blows may be required on an extremely tight flywheel. NOTE Care is required not to damage the flywheel fins. magnets or ring gear 2 2 4