SECTION
4:
Transmission
Removal
and
Installation
PTO
HORSE
MODEL
TECHNICAL
MANUAL
Page
4-3
4/90
Attaching the Transmissions
1.
Clean the surfaces of the
transmissions where they join
together.
2.
Make sure the
dog
clutches
have been greased. Fill the dog
clutch cavity on the
PTa
power
unit
with grease
up
to where the
rear of the
PTa
power
unit
widens
to
accept the tiller attachment.
Then grease the
dog
clutch
on
the
tiller attachment so that the
dog
clutch is covered with grease.
3.
Align the locating pin on the
PTa
Power
Unit
housing with the
locating hole on the tiller attach-
ment
housing and join the
PTa
power
unit and tiller attachment. If
necessary, turn the pulley
on
the
front
of
the
PTa
power
unit
to
adjust
the
dog
clutch
until it fits
the
tiller attachment
dog
clutch.
Note: If you
put
the
Tines/PTa
Clutch
in neutral you will
not
have
to
line
up
the
dog
clutches.
4.
Swing
the bolts so that they
connect
to
the tiller attachment.
5.
Tighten the bolts. Use a
torque
wrench and tighten the
bolts
to
70-80 ft/lbs.
Transmission Installation
1.
Install the wheels.
2.
Install the shift lever bracket
(11) with the left-side bolt and
right-side
bolt
(the one that goes
in horizontally). Be sure that the
Tines/PTa
Clutch
Lever
(13)
is
installed
through
the slot in the
detent plate (15). Make sure to
tighten the bolts securely.
3.
Install the Wheel Speed Lever
connecting rod swivel on the
eccentric lever (10).
4.
Install the
locknut
that retains
the swivel
to
the lever. Tighten the
nut
securely and then loosen it
1/8
turn.
5.
Install the
knob
(12)
on the
Tines/PTa
Clutch Lever
(13)
with
the
bolt
(9).
6.
Install the handlebar
mounting
base and the attached handlebars
to
the transmission housing cover
with the long bolt
(8)
or
T-handle.
7.
Install the bolt, bushing, and
washer (7) that holds the yoke
pivot links
to
each side
of
the
PTa
power
unit.
8.
Apply
a liberal coating
of
grease to the engine
mounting
bars (5).
9.
Position the engine on the
PTa
power
unit and
support
the
engine with a block.
10.
Install one of the engine
mounting
bars halfway. Use a
rubber
hammer
to tap the bar
down. Take care
to
not
damage
the threads in the
top
of
the bar.
11.
Back
off
the jam
nut
and
install the locking bolt (6)
for
the
bar. Turn the bolt until it
is
finger
tight
and you feel it strike the bar.
Then maintain very light pressure
on the bolt with a wrench.
12.
Slowly
tap the engine
mount-
ing bar the rest of the way in.
When the groove in the bar
reaches the bolt, the pressure on
the bolt will
be
relieved.
13.
Tighten the bolt until it is
snug and then back
off
1/4 turn.
Next, hold the bolt with one
wrench while tightening the jam
nut with a second wrench.
14.
Repeat the previous
four
steps
for
the
other
engine
mount-
ing bar.
15.
Install the
bumper
on the
tiller. If the tiller did
not
have a
bumper, install the red plugs in the
top
of
the engine
mounting
bars to
protect the threads in the
bumper
mounting
holes.
16.
Set the yoke in the necessary
position and install the bolt, bush-
ings, and washers
(4)
that hold
each side of the
yoke
to
the
motor
mount. If necessary, temporarily
detach the clutch pawl spring
before attaching the yoke. Be sure
to
reattach the spring after the
yoke is installed.
17.
Attach the throttle
control
cable (3) to the handlebar. Use
plastic wire ties
to
secure the
cable
to
the handlebar.
18.
an
tillers so equipped, attach
the Forward Interlock System plug
connector
with bracket
(2)
to the
top
of the shift lever bracket and
install the forward bolt on the right
side of the shift lever bracket.
19.
an
tillers so equipped,
con-
nect the Forward Interlock System
engine wire harness assembly to
the handlebar wire harness
assembly (1).
A WARNING:
To
help
avoid
personal
in-
jury,
the
Forward
Interlock
Safety
System
should
be
tested
for
proper
function-
ing
every
time
the
tiller
or
PTO
Power
Unit
is
used.
After
completing
all
of
the
assembly
steps,
refer
to
"Test
Operation
of
Forward
Interlock
Safety
System"
in
the
PTO
Horse
Model
Owner/Operator
Manual.
20.
For electric start tillers only:
a.
Attach the battery bracket to
the transmission cover and attach
the
two
mounting
bolts and
lock-
washers that secure the legs of the
bracket.
b.
For Briggs & Stratton engines
only:
Connect
the green
shutoff
wire on the
right
side
of
the
engine.
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