INTERNAL DRIVE LUBRICATION
The Surface Drive unit has 4 internal grease fittings located within the frame housing.
One fitting is located on each of the two universal joints and also on both the upper
bearing housing supporting the prop shaft and on the sprocket shaft bearing housing
shown in the photo below.
After every 75-100 hours of use, lubricate the upper bearing housing and the
universal joint fittings shown below with 2-3 pumps from a grease gun.
The Sprocket Shaft Bearing
Housing shown contains a set of
Tapered Roller Bearings. This
Housing is sealed and grease
lubricated.
After every 75-100 hours of use,
remove the clamp holding the vent
tube connected to the barb fitting
(Fig. 1) and pump grease into the
grease fitting until grease starts to
exit the top of the housing through
the vent hose. Collect excess
grease with a paper towel and
continue pumping grease into the
housing until clean grease starts to expel through the vent hose. Run the engine a few
minutes to mix the old grease with the new grease and kill the engine and pump with
grease again until new grease comes out of the vent tube. Repeat this process three
times and replace the vent tube clamp when finished.
Replace the lower access
panel following the same
instructions as for the upper
panel described on the bottom
of page 15. Add an additional
amount of Silicone to the
corner areas where the bend in
the lower access panel mates
to the frame. Panels must be
sealed properly to keep water
out of the frame housing.
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