Powerhead Reassembly And Installation; General Information - Mercury 75 Service Manual

If the opening exceeds 0.020 in. (0.51mm), or if the
reed is chipped, cracked, or otherwise damaged, re-
place.
Replace locking tab-washer. DO NOT REUSE.
If reed block was disassembled, reassemble by lo-
cating reeds on pins with retaining washer. Use new
tab washer. Insert bolt, and torque to 80 lb. in. (9.0
N
m); then, if necessary, continue the torque to align
flat on hex-head to locking tab - Do not exceed 100
lb. in. (11.3 N
m) torque. Bend up tab to secure bolt
position.
a - Reeds
b - Retaining Washer
c - Pins
d - Bolt
e - Locking Tab
90-830234R3 DECEMBER 1997
19337
0.020 MAX.
e
d
c
b
a
Powerhead Reassembly and
Installation

General Information

Before proceeding with powerhead reassembly, be
sure that all parts to be reused have been carefully
cleaned and thoroughly inspected, as outlined in
"Cleaning and Inspection". Parts, which have not
been properly cleaned (or which are questionable),
can severely damage an otherwise perfectly good
powerhead within a few minutes of operation. All new
powerhead gaskets must be installed during
assembly.
During reassembly, lubricate parts with Quicksilver
2-Cycle Outboard Oil whenever 2-cycle oil is speci-
fied and Quicksilver 2-4-C w/Teflon whenever grease
is specified.
A torque wrench is essential for correct reassembly
of powerhead. Do not attempt to reassemble power-
head without using a torque wrench.
EXAMPLE: If Exhaust Cover bolts require a torque of
220 lb. in. (24.9 N
m), a) tighten all bolts to 73 lb. in.
(8.2 N
m), following specified torque sequence, b)
tighten all bolts to 146 lb. in. (16.5 N
m), following
torque sequence, then finally, c) tighten all bolts to
220 lb. in. (24.9 N
m), following torque sequence.
POWERHEAD - 4-47