Troy-Bilt 682J-Horse Operator's Manual page 36

Section5: Maintenance
36
Before inspecting,deaning or servicing the machine, shut off engine, wait for all moving parts to came
to a cornpiete stop, disconnect spark plug wire and move wire away from spark plug. Remove ignition
key, if so equipped.
Failure to fellow these instructionscan result in serious personalinjury or propertydamage.
Replacing the Reverse Disc
Foilow these steps to repIacethe reverse
disc, (If your tiller has a Bumper Attach=
rnent mounted, it must be removed first=)
Removing the Reverse Disc
1. Move Wheets/rines/PTO Drive Lever in
NEUTRALposition.
2. Wedge a 5/16"-thick board between top
of engine pulley (avoid contacting reverse
disc) and cast iron housing next to it=
This immobilizes pulley=
3. Use a 9/16" wrench to loosen the
mounting bait shown in Figure5-23.
Rememberto irnrnobiiize the puliey with
the wood wedge whiie ioosening tire bolt.
If necessary,pry the disc from the puliey
with the tip of a screwdriver. Back the
bait out as far as possible. Then angle
the disc a little to remove it. Bring the
bolt and Iockwasher along with the disc.
Figure 5°23: Removing Reverse Disc.
/nstaltiflg a New Reveme Disc
1. Do steps 1=through-3, described previ-
ously, in reverse.
2. Tighten mounting bait securely, and
check for correct operation -- see
Checkingand Adjusting ReverseDrive
System=
Checking and Adjusting
Reverse the Drive System
When the Wheels/Tines/PTODrive Lever
is moved up into REVERSE, t he engine
and engine mount move down to press
on the reverse adjustment bolt (Figure 5-
24). Tills action compresses the reverse
spring and plunger assembly, requiring
you to hoid ti_eiever up in REVERSE.
When you reieasethe iever, the spring
autornaticatiy pushes the lever back into
NEUTRALposition.
The spring and piunger assembly is
designedto prevent the reverse disc from
making contact with the transmission
puliey until you shift into REVERSE.
When the iever is in NEUTRAL,the switch
body on the bottom of the engine mount
tab shouid be resting squareiy on top of
the reverseadjustment bolt (Figure 5-24)=
The reverse adjustment bait can be
adjusted up ordown to correct a number
of reverse drive operating probierns, as
explained next.
Figure 5°24: Spring and plunger
assembly.
Checking and Adjusting Reverse Dhc
1. Verify'that iinkages for
Wheels/Tines/PTODrive Leverare Iubri-
cated with oii and engine mount bars and
bett adjustment block are iubricated with
grease= (See Tiller Lubrication in this
section=)
2. PlaceWheels/Tines/PTODrive Lever in
NEUTRAL=Briefly pulI out engine recoil
start rope whiie watching reverse disc.
The disc should turn, but iower puiiey
should not (Figure 5-25)= If reverse disc
turns lower puliey, or if it is iocated c!oser
than 3/16" to the putley, reverse adjust-
merit bait should be adjusted upward (see
instructions that follow). Moving adjust-
rnent bolt upward wiii also solve problem
of a tiiler that goes into REVERSE on its
OWn,
Figure 5-25: Checking Reverse
Disc in NEUTRAL.
3. Use your ieft hand to hold
Wheels/Tines/PTODrive Lever up in
REVERSE, w hile briefly pulling out engine
start rope=The reverse disc shoutd turn
lower putiey (see Figure 5-26)= If not, or
it requires a iot of pressure to hoid iever
up in REVERSE, then reverseadjustment
bait must be adjusted downward. When
correctly adjusted, the Wheeis/Tines/PTO
Drive Lever should pop out of reverse
when the iever is reieased, but not require
exceptional effort to hold it up in reverse
position.
Figure 5°26: Checking Reverse Disc
in REVERSE.
4. Shift the Wheetsfrines/PTO Drive Lever
to REVERSE and then let it go. The lever
should return to NEUTRAL. If not, the
reverse adjustment bolt will haveto be
adjusted upward.