Mercury 305 CID - Repair; Replacement Drive Shafts

8D-4 - DRIVE SHAFT / PROPELLER SHAFT MODELS 90-823225--1 1096
2. Suitably mark drive shaft U-joint yokes/flange
connections (engine output and drive unit input)
to assist in exact same positioning during assem-
bly at engine and transom end.
70237
a
b
c
Engine End Shown (Transom End Similar)
a - Suitable Mark On Flange and Drive Shaft Connection
b - Extension Drive Shaft U-Joint Yoke
c - Flange
3. Remove drive shaft fasteners and drive shaft.
70237
a
b
c
Engine End Shown (Transom End Similar)
a - Output Shaft Flange
b - Drive Shaft
c - Bolt With Nut (4 Total)
Repair
!
CAUTION
Be sure U-joint locking rings are seated properly
after replacing U-joints.
1. Replace U-joints, if required.
2. Replace flange, if required.
a
b
c
a
b
a - Flange
b - U-Joint
c - Drive Shaft
Replacement Drive Shafts
MerCruiser furnishes a 58 in. (1473 mm) or 34-1/2 in.
(876 mm) long drive shaft with extension shaft mod-
els. Some boat manufacturers modify the drive
shafts to a shorter length. Because of this, use the fol-
lowing procedure to obtain replacement drive shafts.
“X”
a
b
b
c
c
d
d
e
a - Tube
b - Yoke - Tube
c - Flange
d - Universal Joint
e - Sound Deadener (Cardboard Tube)
The complete drive shaft can be ordered from
Mercury Marine.