BRP EVINRUDE E-TEC BE50DPLABA, Service Manual

Page: 209 / 422

209
POWERHEAD
POWERHEAD ASSEMBLY
10
Pistons and Connecting Rods
It is very important that the pistons
in this engine are installed in the correct loca-
tion and direction. Engine damage will occur if
installed incorrectly.
New pistons are stamped “EXH.” This marking
should be turned toward the exhaust side of the
block. The splash bowl on the dome of the piston
will be located toward the top and starboard side
of the block.
It is also very important that the
connecting rods are installed with the align-
ment dots and the diagonal oil hole facing up,
toward the flywheel.
Apply Needle Bearing Grease to the wrist pin
bearings. Install the bearings in the small end of
the connecting rod. Align bearings with Wrist Pin
Bearing Tool, P/N 336660.
Place the two wrist pin thrust washers on the tool
with flat side of the washers facing out.
Oil the wrist pin bore and wrist pin. Place connect-
ing rod, with bearings, washers, and tool, into the
piston with the alignment dots facing the top of the
piston.
Install wrist pin through piston and connecting rod,
pushing bearing tool out through the piston.
1. Exhaust side of block
2. Stamped markings
3. Splash bowl
002049
1. Oil hole
2. Raised dots
002055
NOTICE
3
1
2
NOTICE
2
1
1. 28 needle bearings
2. Wrist pin bearing tool
24903
1. Wrist pin thrust washers DR3480
24902
002057
2
1
1