Lower Unit - Yamaha F4 Service Manual

LOWR

LOWER UNIT.................................................................................................6-1

EXPLODED DIAGRAM ............................................................................6-1
REMOVAL AND INSTALLATION CHART................................................6-1
SERVICE POINTS.....................................................................................6-3
Lower unit removal ...........................................................................6-3
WATER PUMP ...............................................................................................6-4
EXPLODED DIAGRAM ............................................................................6-4
REMOVAL AND INSTALLATION CHART................................................6-4
SERVICE POINTS.....................................................................................6-6
Water pump housing inspection ......................................................6-6
Impeller and insert cartridge inspection..........................................6-6
Water pump installation....................................................................6-6
LOWER CASING CAP ASS'Y, REVERSE GEAR
AND PROPELLER SHAFT .............................................................................6-7
EXPLODED DIAGRAM ............................................................................6-7
REMOVAL AND INSTALLATION CHART................................................6-7
SERVICE POINTS.....................................................................................6-9
Lower casing cap ass'y, reverse gear
and propeller shaft removal .............................................................6-9
Reverse gear inspection....................................................................6-9
PROPELLER SHAFT ASS'Y.........................................................................6-10
EXPLODED DIAGRAM ..........................................................................6-10
REMOVAL AND INSTALLATION CHART..............................................6-10
SERVICE POINTS...................................................................................6-11
Dog clutch inspection......................................................................6-11
Propeller shaft inspection ...............................................................6-11
Dog clutch and shift spring installation.........................................6-11
LOWER CASING CAP ASS'Y......................................................................6-12
EXPLODED DIAGRAM ..........................................................................6-12
REMOVAL AND INSTALLATION CHART..............................................6-12
SERVICE POINTS...................................................................................6-13
Lower casing cap/Propeller shaft bearing removal ......................6-13
Lower casing cap oil seal removal.................................................6-13
Bearings inspection.........................................................................6-13
Lower casing cap inspection ..........................................................6-14
Lower casing cap assembly............................................................6-14
Gear shift check ...............................................................................6-15
DRIVE SHAFT, FORWARD GEAR AND SHIFT ROD ..................................6-16
EXPLODED DIAGRAM ..........................................................................6-16
REMOVAL AND INSTALLATION CHART..............................................6-16
CHAPTER 6
LOWER UNIT
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