Walker D21d User Manual

90
Maintenance Instructions ADJUSTMENTS
GHS “Full” Signal Horn Adjustment
The vertical position of the Grass-Pak
®
switch is
critical to make sure the catcher box does not over-
ll causing the delivery chute to clog. The vertical
position can be adjusted by moving the aluminum
shaft and vane on the Grass-Pak
®
switch.
1. Position the discharge chute so that it is point-
ing straight back.
a. Turn the ignition switch to ON (RUN) and
move the blade clutch to the ENGAGED
position (engine not running).
b. Open the catcher back door and monitor
the spout position (as it oscillates) and
move the blade clutch to the DISENGAGED
position and turn the ignition switch to the
OFF position.
DANGER
PINCH POINT - SPRING LOADED DOOR
When lowering the door on the GHS
catcher, BE VERY CAREFUL to keep
hands, ngers, etc. out of the hinging
mechanism and away from the door frame
as the door closes. The springs that hold
the door closed during operation are very
powerful, and the door can slam shut with
considerable force.
WARNING
DO NOT test the Grass-Pak
®
switch with
the engine running. Projectiles CAN be
thrown out of the grass delivery spout
and CAN cause serious injury to bystand-
ers or property damage.
2. Measure from the exhaust screen (top of catch-
er) to the top of the Grass-Pak
®
switch actuator
vane, refer to Adjusting the Grass-Pak
®
Switch illustration. The proper measurement
should be between 4 and 4-1/2 inches (10 and
11.5 cm).
4 to 4-1/2 in.
(10 to 11.5 cm)
Adjustment Nut
Exhaust
Screen
Adjusting the Grass-Pak
®
Switch
(Side View of Catcher Box)
3. If adjustment is required, loosen front adjust-
ment nut then move aluminum shaft and vane
to the recommended measurement. Adjust-
ments should be done in very small increments
checking the measurement each time until the
recommended measurement is achieved.
NOTE: It will not be possible to adjust the switch
to give a signal at the precise instant the catcher
is full for a wide variety of mowing conditions.
For example, wet heavy grass will ll the catcher
di󰀨erently than dry u󰀨y grass, causing the sig-
nal to come on a little sooner or later than usual.
Primarily, the switch should be adjusted to give
the “full” signal with a little advance warning
before overlling and clogging of the grass
delivery chute begins (regardless of mowing
conditions).

Walker D21d Specifications

General

Brand	Walker
Model	D21d
Category	Lawn Mower
Language	English