Mercury 250 Jet Drive - Installing Powerhead; Install gasket on drive housing cover; Install water inlet O-ring and driveshaft opening O-ring; Lubricate driveshaft splines

250 HP JET DRIVE INSTALLATION MANUAL
Page 27
90-10240040 DECEMBER 2003
Installing Powerhead
1. Install gasket on drive housing cover.
2. Install water inlet O-ring and driveshaft opening O-ring.
3. Lubricate drive shaft splines with Special Lubricant 101.
a
b
c
d
a-Gasket
b-Water Inlet O-Ring
c-Drive Shaft Opening O-Ring
d-Lubricate driveshaft splines with Special Lubricant 101
4. Lower powerhead on drive housing cover. Align driveshaft splines with crankshaft.
5. Follow the torque sequence shown and first torque locknuts to 27 Nm (20 lb ft) then
repeat torque sequence, torquing locknuts to 47 Nm (35 lb ft).
a
2
1
3
4
5
6
7
8
9
10
11
12
a-Locknut (12) – Torque to 45 Nm (35 lb ft)