Cleaning And Inspection; Installation; Maintenance Instructions - Mercury 305 CID Service Manual

Cleaning and Inspection

1. Disassemble muffler as shown.
c
d
a - Removable End Plate
b - 4 Screws Secure End Plate
c - O-Ring Seal
d - Element - When Reassembling, Seat Tab In Slot In Cast-
ing
2. Clean (using pressurized water) and inspect
parts, including filter element and O-ring seal. If
required, replace O-ring, securing in place with
Quicksilver Sound Blanket Glue.
3. Reassemble as shown above. Tighten end plate
screws securely.

Installation

1. Install muffler, as shown, into exhaust hose and
molded tube. Fabricate muffler to transom using
4-inch I.D. exhaust hose, cut to required length.
NOTE: Removable end of muffler ALWAYS goes to-
ward exhaust elbow. This places direction marks on
muffler body casting at the upper rear corner on the
port side.
Index
7D-8 - COLLECTORS
b
a
72782
72783
IMPORTANT: A MOLDED exhaust tube MUST be
used at exhaust elbow connection to maintain
positive separation of exhaust outlet and muffler
inlet.
c
a
d
a - Muffler
b - Molded Exhaust Tube - Muffler To Elbow
c - Exhaust Hose - Muffler To Thru Transom Fitting - Cut To
Length
d - Double Clamp Each Connection (Not Shown On Hose C)
2. Double clamp each connection; tighten each
clamp securely.
IMPORTANT: After starting engine, check instal-
lation for leaks.

Maintenance Instructions

Maintenance inspection is owner's responsibility and
must be performed at intervals specified in owner's
Operation and Maintenance Manual.
1. Check exhaust elbow attaching nuts for ade-
quate tightness [20-25 lb. ft. (27-34 N·m)].
2. Check hose clamps for adequate tightness.
3. Periodically check tubes/hoses for soft spots,
brittleness, cracks, and general condition. Re-
place as necessary.
b
d
72781
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