Checking The Connecting Rod Small End Axial Play; Disassembling The Upper Bearing; Assembling The Upper Bearing - Yamaha 55DEHD Service Manual

POWR
Checking the connecting rod small
end axial play
1. Install the bearing and connecting rod.
2. Measure the connecting rod small end
axial play. Replace the bearing and con-
necting rod if above specification.
NOTE:
To measure the axial play, set the dial gauge
at the connecting rod small end and parallel
to the crankshaft.
Connecting rod small end
axial play limit:
2.0 mm (0.08 in)

Disassembling the upper bearing

1. Remove the O-ring and oil seal.
5-29
Power unit
68850460
69R50340

Assembling the upper bearing

1. Apply grease to the new oil seal 1, new
O-ring 2, and then install them onto the
upper bearing.
2
Bearing inner race attachment 3:
90890-06640
3
1
68850580
6885J11