Bolens 721 服务手册

6

Located on the upper handle, the auger control handle 
is used to engage and disengage the auger. The snow 
thrower is designed to propel by the rotation of the 
auger. Pull the auger control handle back against the 
upper handle to engage the auger; release to 
disengage.

The angle of the discharge chute controls the distance 
that the snow is thrown. Tilt the discharge chute up for 
greater distance; tilt down for less distance. Loosen the 
hand knob on the side of the discharge chute to adjust. 
Tilt the chute to the desired position, and tighten the 
knob.

The location of the choke lever is indicated in Figure 3 
inset. You will have to use this lever to start the engine. 
Push the lever all the way up to the FULL/ON position, 
or all the way down to the OFF position as desired.

Discard the fuel plug, before filling the fuel tank. It is 
only used during assembly to keep dirt and debris out of 
fuel tank.

Used to inject fuel directly into the carburetor to insure 
fast starts in cold weather. Follow engine manual to 
prime engine.

Used to start engine. Put key  in “ON” position to start 
for both electric and recoil start engines. Follow starting 
instructions given in the next section.

Used to manually start the engine.

Used to start engine with a 120V power source

Requires use of a three-prong outdoor extension cord

and a 120V power source

Spark plug located under the access cover.

Be familiar with all the controls on the snow thrower and their proper operation. Know how to 

stop the machine and disengage them quickly.