MerCruiser 305 CID (5.0L) Service Manual page 305

IGNITION SYSTEM
Installation
NOTE: Rotor/sensor wheel are sold as an assembly only.
1. Ensure that carbon brush tang has a 1/4 in. (6 mm) gap between rotor and tang.
2. Put 2 drops of Loctite 27131 into the rotor so it lands on the locating key.
3. Put 2 drops of Loctite 27131 in keyway on upper portion of distributor shaft.
4. Immediately install rotor assembly onto distributor shaft.
a. Ensure rotor locating key is aligned with keyway in distributor shaft. Press rotor down
5. Let Loctite cure overnight with distributor in inverted position.
IMPORTANT: The rotor should fit very tight. It may be necessary to heat rotor with
heat lamp to properly install. Do not let any Loctite run down distributor shaft. Loctite
could get into top distributor housing bushing.
IMPORTANT: Ensure that the fingers of the sensor wheel are not touching the sensor
when the wheel is rotated.
6. Reinstall distributor cap on distributor.
Index
Page 4B-20
a - 1/4 in. (6 mm)
on the shaft with your hand until it stops.
a - Adjusting Screws
b - Sensor
c - Sensor Wheel Fingers
a
c
b
a
SERVICE MANUAL NUMBER 24
72731
76395
90-861327--1 OCTOBER 1999