Mercury 150 EFI Service Manual page 574

3. Install divider block if removed. Use RTV Sealer to seal seams between divider block
and gear housing.
4. Install a new water pump base gasket and install water pump base.
a a
a -
b -
5. Install the following in order: Pump base to face plate gasket, face plate to pump cover
gasket. Gaskets and face plate are indexed by dowel pin location and must be in-
stalled correctly.
a -
b -
c -
6. Place impeller drive key on flat of driveshaft. Hold key on driveshaft with a small
amount of Quicksilver 2-4-C with Teflon Marine Lubricant.
IMPORTANT: When completing gear housing repair that requires removal of water
pump impeller, it is recommended that the impeller be replaced. If it is necessary
to reuse the impeller, DO NOT install in reverse to original rotation or premature
impeller failure will occur. Original rotation is clockwise.
A visual inspection of impeller drive key MUST BE made to determine that drive
key is on flat of driveshaft after impeller is installed. If key has moved off flat of
driveshaft, repeat Steps 6 and 7.
90-883728 JULY 2001
51878
Divider Block
Water Pump Base
b b
Gasket (Water Pump Base to Face Plate)
Face Plate
Gasket (Face Plate to Water Pump Cover)
a
b
c - Gasket
d - Hole (MUST be positioned as shown)
c
c
a a
51868
CAUTION
LEFT HAND NON-RATCHETING
c
d
c 51866
b
Page 6B-53