Bolens 644E Snow Blower User Manual


 
15
Chute Assembly
The distance snow is thrown can be adjusted by
changing the angle of the chute assembly. To do so,
stop the engine by removing the ignition key and loosen
the plastic wing knobs found on either side of the
discharge chute. Pivot the chute upward or downward
before re-tightening the wing knobs.
Auger Control
Refer to Auger Control Test in the Operating Section to
adjust the auger control.
Skid Shoes
The space between the shave plate and the ground can
be adjusted. See Figure 19.
For close snow removal on a smooth surface, raise
skid shoes higher on the auger housing.
Use a middle or lower position when the area to be
cleared is uneven.
Figure 19
WARNING: Do not operate this snow
thrower on gravel as loose gravel can be
easily picked up and thrown by the auger
causing injury to the operator and/or
damage to the snow thrower.
Adjust skid shoes by loosening the four hex nuts
and carriage bolts. Move skid shoes to desired
position.
Make certain the entire bottom surface of skid shoe
is against the ground to avoid uneven wear on the
skid shoes. Retighten nuts and bolts securely.
Carburetor
Minor carburetor adjustment may be required to
compensate for differences in fuel, temperature,
altitude and load.
Refer to the separate engine manual, packed with
your unit, for carburetor adjustment information.
WARNING: If any adjustments need to
be made to the engine while the engine is
running (e.g. carburetor), keep clear of all
moving parts. Be careful of muffler, engine
and other surrounding heated surfaces.
Adjusting Shift Rod
Remove the hairpin clip and flat washer from the
ferrule and remove the ferrule from the shift lever.
Place the shift lever in the fastest forward speed
position.
Models 602, 642, 662
Push up on the shift arm assembly as far as it will
go. Thread the ferrule up or down the shift rod and
align with the lower hole on the wider side of the
shift lever assembly behind the handle panel.
Secure the ferrule to the shift arm assembly again
with the hardware earlier removed.
Refer to Figure 7.
Models 614, 644, 664, and 6A4
Push down on the shift arm assembly as far as it
will go. Thread the ferrule up or down the shift rod
and align it with the hole closest to the shift knob on
the narrow side of the shift lever assembly behind
the handle panel. Refer to Figure 8.
NOTE: Make certain to check for correct adjustment
of the shift rod as instructed in the Final Adjustments
section before operating the snow thrower.
Drive Wheels
The wheels may be adjusted for two different
methods of operation. Follow the steps below for
adjustment. See Figure 20.
One Wheel Driving
On the right side of the unit, place klick pin in the
outside axle hole only. Do not place pin through
wheel hub.This position gives power drive to the left
wheel only, making the unit easier to maneuver.
Figure 20
Skid
Shoes
Carriage
Bolts
Hex Nuts
Inside Hole
In Axle
Click Pin In
Outside Hole