PTO
HORSE
MODEL
TECHNICAL
MANUAL
Page
7-1
4/90
SECTION
7:
Special
Repairs
and
Procedures
Figure
7-1:
Tines/PTa
Clutch
Lever
Assembly.
WARNING:
When servicing the machine, prevent uninten-
tional starting of the engine by disconnecting the spark plug
wire and keeping the wire away from the spark plug. Place
the engine throttle control in the OFF position and shift the
Wheels/Tines/PTa Drive Lever into NEUTRAL.
Installing a
New
Tines/PTO /Clutch
Lever Assembly
In early model
PTa
Horse models,
a ball bearing assembly on the
Tines/PTa
Clutch
Shaft
func-
tioned
as
the
contact
piece that
moved the
PTa
power
unit
dog
clutch
to engage the tiller attach-
ment
dog
clutch. However,
time
has demonstrated that the ball
~
bearing wears
prematurely
in this
situation. Therefore, a
common
. maintenance/service
procedure
is
to
replace the old ball bearing
assembly with a
new
style screw-
head assembly and a
new
style
dog
clutch.
The
Part
Number
10353 service kit
contains
all the parts necessary
to
perform
this procedure.
Removing the Existing
Assembly
1.
Separate the
tiller
tine attach-
ment
from
the
PTa
power
unit.
See "Separating the Transmis-
sions" in
SectiQn
4.
2.
Make the
PTa
power
unit
level
(horizontal).
...
3.
Remove the
bolt
(1)
tha~«lds
the
clutch
lever
knob
(2) to.the
..
_.
clutch
lever (3).
Then
remove
tile
clutch
lever
knob
and
bolt
(see
inset, Figure 7-1).
4.
Remove the bolts (4) that
hold
the
detent
plate (5).
Then'remove
the detent plate. (See inset, Figln'e
7-1
).
5.
Remove the
bolt
(6)
that
holds
the
clutch
lever to the
eccentric
shaft (11) and remove the
clutch
lever.
6.
Unscrew
the
eccentric
shaft
hex
nut/bushing
(7).
Then
lift the
shaft
up
(tilting the assembly in
the
housing
down)
and
withdraw
the assembly
from
the housing.
Discard the
eccentric
shaft
assemblY: .
7.
Remove and discard the
(external) snap ring (8) that retains
the
dog
clutch
(9)
to
the drive
shaft.
......
-
8.
Remove and discard the
dog
clutch.
9.
Remove and discard the key
(10) that holds the
dog
clutch
on
the drive shaft.
Installing a
New
Assembly
1.
Apply
a coating
of
grease to
the new
dog
clutch
(9) (Part No.
2120-3) and slide it on the drive
shaft. Make sure the three ears
point
toward
the rear
of
the
transmission.
2.
Align
the keyway in the shaft
and
the
keyway in the
dog
clutch
and insert the new key (10) (Part
No. 9301) all the
way
forward.
3.
Install a
new
(external) snap
ring (8) (Part No. 9500)
to
retain
the
dog
clutch
to
the drive shaft.
Install the flat side
of
the snap ring
facing the rear
of
the transmission.
Although
not
easy
to
observe, the
snap ring has a flat side and a
rounded
side.
4.
Stick
your
finger
in the
eccentric
shaft assembly hole;
you
want
to
position
the
groove
on the
To Next Page
Loading...
