Thermostat And Anode Installation - Mercury 25 EFI Service Manual

15. Install the drive gear onto the crankshaft.
16. Install the plate, lockwasher, and nut onto the crankshaft.
a - Timing mark
b - Alignment slots
c - Alignment tab
d - Crankshaft keyway
IMPORTANT: The plate outside edge is curved. Install the plate with the outside curved edge toward the flywheel.
17. Install the flywheel key. Install the crankshaft holding tool and tighten the drive gear nut to the specified torque.
Description
Drive gear nut
18. Bend the lockwasher up to drive gear nut.
19. Install the belt tensioner but do not tighten the bolt.
b

Thermostat and Anode Installation

1. Install the thermostat, thermostat cover gasket, and thermostat cover. Secure the thermostat cover with two bolts.
90-8M0105568 eng MARCH 2016
a
d
b
a a -
d
b -
c -
d -
c
11588
© 2016 Mercury Marine
c
Nm
64
Flywheel key
Cam drive gear nut
Cam drive gear
Belt tensioner
Cylinder Block/Crankcase
11787
lb. in. lb. ft.
46
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