Mercury 250 Jet Drive - Installing Jet Pump; CAUTION; Install tunnel grommet

250 HP JET DRIVE INSTALLATION MANUAL
Page 16
90-10240040 DECEMBER 2003
Installing Jet Pump
CAUTION
The hull opening dimensions are critical for proper sealing between Jet Pump and
boat. Measure cutout thickness and overall dimensions before attempting a Jet
Pump installation.
1. Install tunnel grommet in cut-out of boat by gluing front portion of grommet to tunnel with
Loctite 454 or equivalent. Avoid gluing flexible sealing lips to tunnel.
NOTE: The procedure for gluing the grommet is not required for the following grommets:
Part Number 820663-250 (1/4 in grommet)
Part Number 820663-375 (3/8 in grommet)
Part Number 882811 (3/8 in grommet)
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CUTOUT THICKNESS
.375”
+0.050
–0.030
Use Grommet P/N:
25-877789
a
a
b
b
c
a-Glue Front Portion of Grommet
b-Avoid Gluing Flexible Sealing Lips to Tunnel
c-Loctite 454