Making Adjustments - MTD 640 Operator's Manual

To Stop Engine
• 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.
To prevent starter freeze-up:
• Run engine for a few minutes before stopping to
help dry off any moisture on the engine.
• 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 will 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.
• 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. Leave
throttle control lever in the STOP or OFF position.
Leave choke control in the FULL choke position.
• Remove ignition key and disconnect spark plug
wire. Do not turn key.
Do not lose ignition key. Keep it in a safe
IMPORTANT:
place. Engine will not start without the ignition key.
To Engage Drive
• With the engine running near top speed, move
shift lever into one of the five FORWARD positions
or two REVERSE positions. Select a speed
appropriate for the snow conditions that exist. Use
SECTION 5: MAKING ADJUSTMENTS
WARNING:
adjustments while the engine is running,
except where specified in the operator's
manual.
Chute Assembly
The distance snow is thrown can be adjusted by
changing the angle of the chute assembly. Refer to
Chute Tilt Control on page 7.
Skid Shoe
The space between shave plate and ground can be
adjusted by raising or lowering the skid shoes. Refer to
Skid Shoe Adjustment on page 12.
NEVER attempt to make any
the slower speeds until you are familiar with the
operation of the snow thrower.
• Squeeze the auger control and the augers will
turn. Release it and the augers will stop.
• Squeeze traction control and the snow thrower will
move. Release it and unit will stop. Never move
shift lever without releasing traction control.
To Engage Augers
• To engage augers and start throwing snow,
squeeze the auger control against the left handle.
Release to stop the augers.
Tire Chains
(Optional Equipment)
• Tire chains should be used whenever extra
traction is needed. If your unit is not equipped with
tire chains, you may purchase them.
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.
WARNING:
surrounding areas become hot and can
cause a burn. Do not touch.
• Discharge snow downwind whenever possible.
Slightly overlap each previous path.
• Set the skid shoes 1/4" below the scraper bar for
normal usage. The skid shoes may be adjusted
upward for hard-packed snow. Adjust downward
when using on gravel or crushed rock.
• Avoid possible starter freeze-up. Clean the snow
thrower thoroughly after each use.
Traction Control
Refer to Final Adjustments on page 6 to adjust traction
control. If you are want to check further for correct
adjustment, proceed as follows:
WARNING:
thrower engine, place a piece of plastic film
under the gas cap to avoid spillage before
beginning the job.
• Tip the snow thrower forward, allowing it to rest on
the auger housing.
• Remove the frame cover underneath the snow
thrower by removing six self-tapping screws.
9
The muffler, engine and their
Drain the gasoline out of snow