Section 7: Adjustments - MTD Yard-Man 993 Series Operator's Manual

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TO STOP ENGINE
1.
Run engine for a few minutes before stopping to
help dry off any moisture on the engine.
2.
To help prevent possible freeze-up
of starter,
proceed as follows:
Optional
Electric
Starter
Connect power cord
to switch box on engine, then to 120 volt AC
receptacle. With the engine running, push starter
button and spin the starter for several seconds.
The unusual sound made by spinning the starter
wilt not harm engine or starter. Disconnect the
power cord from receptacle first, and then from
switch box.
Recoil Starter
With engine running, pull starter
rope with a rapid, continuous
full arm stroke
three or four times. Pulling the starter rope will
produce
a loud clattering
sound, which is not
harmful to the engine or starter.
3.
To stop engine, remove the ignition key. Do not
turn key. Disconnect
the spark plug wire from
the spark plug to prevent
accidental
starting
while equipment is unattended.
NOTE:
Do not lose ignition key. Keep it in a safe
place. Engine will not start without the ignition key.
4.
Wipe all snow and moisture from the carburetor
cover in the area of the control levers. Also,
move
control
levers
back and forth
several
times.
TO ENGAGE
DRIVE
1.
With the engine running near top speed, move
shift
lever
into
one
of the
six
FORWARD
positions
or two REVERSE positions. Select a
speed appropriate
for the snow conditions that
exist.
Use the slower
speeds
until you
are
familiar with the operation of the snow thrower.
2.
Squeeze
the left hand auger clutch grip and
engage it.
3.
While the left hand auger clutch grip is engaged,
engage
the right hand traction
control clutch
grip.
4.
Release the left hand auger clutch grip only. The
interlock mechanism
should keep the left hand
clutch
engaged
until the right hand clutch is
released.
NOTE:
NEVER
move
shift
lever
without
first
releasing the traction control clutch.
TIRE PRESSURE
Pneumatic
tires only
Tires are over-inflated
for
shipping
purposes.
Correct tire pressure
is 10-15
psi.
(Check
sidewall
of tire
for
manufacturer's
recommendation.)
TIRE CHAINS
Tire chains should be used whenever extra traction
is needed.
OPERATING
TIPS
NOTE:
Allow the engine to warm up for a few
minutes as the engine will not develop full power
until it reaches operating temperature.
,i_
WARNING:
Temperature
of muffler and
surrounding
areas
may exceed
150 ° F.
Avoid these areas.
1.
For most efficient snow removal, remove snow
immediately after it falls.
2.
Discharge snow downwind
whenever possible.
The distance snow is thrown can be adjusted by
adjusting the angle of the chute assembly. The
sharper the angle, the shorter the distance snow
is thrown. Slightly overlap each previous swath.
3.
Set the skid shoes 1/4" below the shave plate for
normal usage. The skid shoes may be adjusted
upward for hard-packed snow. Adjust downward
when using on gravel or crushed rock.
4.
Be certain to follow the precautions listed under
previous
section, "To Stop Engine" to prevent
possible freeze up.
5.
Clean the snow thrower thoroughly
after each
use.
SECTION
7: ADJUSTMENTS
,_
WARNING:
NEVER
attempt
to
clean
chute
or
make
any
adjustments
while
engine is running.
REMOTE CHUTE ASSEMBLY ADJUSTMENT
The remote chute control cables have been pre-
adjusted at the factory. Move the remote chute lever
on the control
panel back and forward to adjust
angle of the chute assembly.
CHECK ADJUSTMENT
OF CLUTCH CABLES
Proper adjustment is achieved by sliding the spring
up the cable and threading the nut in or out. Correct
adjustment on cables is minimal slack but not tight.
AUGER
BELT TENSION
ADJUSTMENT
Periodic
adjustment
of the belt tension
may be
required due to normal stretch and wear on the belt.
Increase belt tension if the augers hesitate while the
augers
are engaged
or decrease
tension
if the
augers
continue
to
turn
when
the
augers
are
disengaged. Refer to Proper Adjustment on page 12.

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