MTD Snow Boss 550 Snow Blower User Manual


 
9
Move throttle control up to FAST position. Insert
ignition key into slot. See Figure 8. Be certain it
snaps into place. Do not turn the key.
Rotate choke knob to FULL choke position (cold
engine start). If engine is warm, place choke in
OFF position instead of FULL.
Electric Start Only: Connect power cord to switch
box on engine. Plug the other end of power cord
into a three-hole, grounded 120 volt AC receptacle.
Recoil Start Only: Push primer button two or three
times when using recoil starter. If engine is warm,
pushprimerbuttononceonly.SeeFigure8.
NOTE:
Alwayscoverventholeinprimerbuttonwhen
pushing. Additional priming may be necessary for first
start if temperature is below 15
o
F.
Electric Start: Do NOT prime engine. Push starter
button on top of the engine to crank the engine.
When engine starts, release starter button.
Recoil Start: Grasp starter handle (see Figure 8)
and pull rope out slowly, until it pulls slightly harder.
Let rope rewind slowly. Pull starter handle rapidly.
Do not allow handle to snap back. Allow it to rewind
slowly while keeping a firm hold on the starter
handle.
As engine warms up and begins to operate evenly,
rotate choke knob slowly to OFF position. If engine
falters, return to FULL choke, then slowly move to
OFF position.
To Stop Engine
Run engine for a few minutes before stopping to
help dry off any moisture on the engine.
To help prevent possible freeze-up of starter,
proceed as follows:
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 recepta-
cle first, and then from switch box.
Recoil Starter (Optional Instructions): With
engine running, pull starter rope with a rapid, con-
tinuous 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.
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.
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.
To Engage Drive
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.
NOTE:
Use the slower speeds until you are familiar
with the operation of the snow thrower.
Squeeze the traction control against the right
handle and the snow thrower will move. Release it
and the drive motion will stop.
IMPORTANT: NEVER move shift lever without first
releasing the traction control. Doing so will cause
premature wear to drive system’s friction wheel rubber.
To Engage Augers
To engage the augers and start the snow throwing
action, squeeze the auger control against the left
handle.
To disengage power to the augers, release both the
auger control and the traction control, if engaged,
NOTE:
The auger control can also be locked so you
can turn the chute directional control without
interrupting the snow throwing process. Refer to
Traction Control/ Auger Control Lock in Section 4 of this
manual.
Tire Chains (Optional Equipment)
Tire chains should be used whenever extra traction is
needed. See your local White Outdoor dealer for
information regarding tire chains and other optional
accessories for your snow thrower.
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: Temperature of muffler and
surrounding areas may exceed 150
o
F.
Avoid these areas.
Set the skid shoes 1/4" below the shave plate for
normal usage. The skid shoes may be adjusted
upward (to lower the shave plate) for hard-packed
snow. Adjust downward (to raise the shave plate)
whenusingongravelorcrushedrock.
Remove snow immediately after it falls.
Discharge snow downwind whenever possible.