Walker MT - Manual (Page 93)

Maintenance Instructions
ADJUSTMENTS
91
GHS “Full” Signal Horn with Grass-Pak
®
Switch
If the GHS “full” signal horn is not sounding when the
catcher is full, the following troubleshooting and ad-
justment instructions apply:
1. Check the horn.
a. Disconnect the two wires from the Grass-
Pak
®
switch electric connector plug and
make a jumper wire connection between
these wires (bypassing switch).
b. Turn the ignition switch ON and move the
blade clutch to the ENGAGED position
(engine not running) to make the horn
sound.
c. If the horn does not sound, the horn is bad
and needs to be replaced.
d. If the horn does sound, proceed to step 2.
2. Check the Grass-Pak
®
switch.
a. Reconnect the wires to the Grass-Pak
®
switch electric connector plug.
b. Turn the ignition switch ON and move the
blade clutch to the ENGAGED position
(engine not running).
c. Open the catcher back door and trigger the
Grass-Pak
®
vane by hand as it oscillates.
d. The horn should sound as the switch is
moved in both directions. If the horn does
not sound, the switch is bad and needs to
be replaced.
Checking the Grass-Pak
®
Switch
Adjustment (When Horn Sounds at Wrong Time)
The vertical position of the Grass-Pak
®
switch is crit-
ical to make sure the catcher box does not overfill
causing the delivery chute to clog. The vertical po-
sition can be adjusted by bending the mounting
bracket for the Grass-Pak
®
switch.
1. Position the discharge chute so that it is point-
ing straight back.
a. Turn the ignition switch ON 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 DISEN-
GAGED position and turn the ignition
switch to the OFF position.
2. Measure from the exhaust screen (top of catch-
er) to the top of the Grass-Pak
®
switch actuator
vane, as shown. The proper measurement
should be between 4 and 4-1/2 inches (10.16
and 11.43 cm).
DANGER
PINCH POINT - SPRING LOADED DOOR
When lowering the door on the GHS
catcher, depress the safety latch on the
side of the catcher. BE VERY CAREFUL to
keep hands, fingers, etc. out of the hing-
ing 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 bystanders or
property damage.
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 bystanders or
property damage.
Grass-Pak
®
Vane Switch