Evinrude 4906B 4HP 1969, Руководство пользователя

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8
LOWER UNIT
8-1 DESCRIPTION
The lower unit is considered as that part
of the outboard below the exhaust housing.
The unit contains the propeller shaft, the
driven and pinion gears, the driveshaft from
the powerhead and the water pump. On
models equipped with shifting capabilities,
the forward and reverse gears, together
with the dutch, shift assembly, and related
linkage, are all housed within the lower unit.
The lower unit is removed by one of four
methods depending on the model year and
the engine horsepower.
1-
Removal of the power head is neces-
sary before the lower unit can be serviced.
2- The window on the exhaust housing
may be opened and the shift coupler discon-
nected.
3- The lower unit is lowered a couple
inches and the shift coupler removed.
Non-shift lower unit with the drive gear, cap, and
propeller shaft shown.
4- The lower unit does not have shifting
capabilities, therefore, removal of the unit
is not an invol ved procedure.
To determine the proper procedures to
follow, simply check the Appendix for the
engine being serviced.
CHAPTER COVERAGE
Four different lower units are covered in
this chapter with separate sections for each.
The first type unit, presented in Section
8-5, covers the 1.5 hp to 4- hp engines with
no shift capabilities.
The second type unit, presented in
Section 8-6, covers the 5.0 hp to the 25 hp
engines with mechanical shift.
The third unit, presented in Section 8-7,
covers the 28 hp to 4-0 hp engines with
mechanical shift. These units are very
similar to those covered in Section 8-6
Mechanical shift lower unit for
a 5
hp
to 25
hp
engine with the cap removed, exposing the internal
parts.