Bolens 721 服务手册
8
To Stop Engine
•
To stop engine, turn ignition key counter-clockwise.
Disconnect the spark plug wire from the spark plug
to prevent accidental starting while equipment is
unattended.
Disconnect the spark plug wire from the spark plug
to prevent accidental starting while equipment is
unattended.
To help prevent possible freeze-up of starter,
proceed as follows:
proceed as follows:
•
Run engine for a few minutes before stopping to
help dry off any moisture on the engine.
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.
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.
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 to prevent accidental starting.
wire to prevent accidental starting.
Operating the Snow Thrower
The pitch of the discharge chute controls the angle at
which the snow is thrown.
which the snow is thrown.
•
Loosen the wing knob found on the left side of the
discharge chute and pivot the upper chute upward
or downward to the desired pitch. Retighten the
wing knob before operating the snow thrower.
discharge chute and pivot the upper chute upward
or downward to the desired pitch. Retighten the
wing knob before operating the snow thrower.
•
Position the discharge chute opening by using the
Chute Handle to throw the snow in the desired
direction. See Figure 5.
Chute Handle to throw the snow in the desired
direction. See Figure 5.
Figure 5
Operating Tips
•
Discharge snow downwind whenever possible.
Slightly overlap each previously cleared path.
Slightly overlap each previously cleared path.
•
Lifting up on the handle will allow the rubber on the
augers to propel the snow thrower forward. Pushing
downward on the handle will raise the augers off
the ground and stop forward motion.
augers to propel the snow thrower forward. Pushing
downward on the handle will raise the augers off
the ground and stop forward motion.
NOTE: Excessive upward pressure on the handle will
result in premature wear on the rubber auger blades
which would not be covered by warranty.
result in premature wear on the rubber auger blades
which would not be covered by warranty.
•
Run the engine for a few minutes before stopping to
help dry any moisture on the engine.
help dry any moisture on the engine.
•
Clean the snow thrower thoroughly after each use.
SECTION 5: MAKING ADJUSTMENTS
Shave Plate
•
To check the adjustment of the shave plate, place
the unit on a level surface. See Figure 6. The
wheels, shave plate and augers should all contact
level surface. Note that if the shave plate is
adjusted too high, snow may blow under the
housing. If the shave plate wears out excessively,
or the unit does not self-propel, the shave plate
may be too low and needs to be adjusted.
the unit on a level surface. See Figure 6. The
wheels, shave plate and augers should all contact
level surface. Note that if the shave plate is
adjusted too high, snow may blow under the
housing. If the shave plate wears out excessively,
or the unit does not self-propel, the shave plate
may be too low and needs to be adjusted.
NOTE: On new units or units with a new shave plate
installed, the augers may be slightly off the ground.
installed, the augers may be slightly off the ground.
Figure 6
WARNING:
Muffler, engine and surrounding
areas become hot and can cause a burn. Do
not touch.
not touch.
Wing Knob
Chute Handle
Upper Chute
WARNING:
NEVER attempt to make any
adjustments while the engine is running,
except where specified in the operator’s
manual.
except where specified in the operator’s
manual.
Augers
Shave Plate