Adjustments; Carburetor/Oil Pump Synchronization; Bleeding Air From Oil Injection System; Bleeding Air From Oil Pump Inlet Hose - Mercury 40 Service Manual

Adjustments

Carburetor/Oil Pump
Synchronization
1. Set carburetor linkage at idle position. Adjust
length of link rod so stamped mark of oil pump
body aligns with stamped mark of oil pump lever.
d
a
a - Link Rod
b - Oil Pump Body Stamped Mark
c - Oil Pump Lever Stamped Mark
d - Bleed Screw
Bleeding Air From Oil Injection
System
CAUTION
If air exists in either oil pump hose (inlet or outlet), the
air MUST BE bled from hose(s) or engine damage may
occur.

BLEEDING AIR FROM OIL PUMP INLET HOSE

With engine not running, place a shop towel below oil
pump. Loosen bleed screw three to four turns and al-
low air bubbles to exit inlet hose. Torque bleed screw
to 25 lb. in. (2.8 N·m). This procedure also allows oil
pump to fill with oil.
90-852572R1 JANUARY 1998

BLEEDING AIR FROM OIL PUMP OUTLET HOSE

1. Purge air from outlet hose by running engine (on
50:1 gasoline/oil mixture in fuel tank) at idle
speed until no air bubbles are present in outlet
hose.
c
b
a - Bleed Screw
b - Inlet Hose
c - Outlet Hose
c
a
b
52047
FUEL SYSTEM - 3C-7