94
Maintenance Instructions
D21d
Adjustments
GHS “Full” Signal Horn Adjustment
The vertical position of the Grass-Pak
®
switch is
critical to make sure the catcher box does not
overfill 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
DISEN-
GAGED
position and turn the ignition
switch to the
OFF
position.
DANGER
PINCH POINT - SPRING LOADED DOOR
When lowering the door on the GHS catch-
er, BE VERY CAREFUL to keep hands, fin
-
gers, 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 consider-
able 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.
2. Measure from the exhaust screen (top of
catcher) to the top of the Grass-Pak
®
switch
actuator vane, refer to
Adjusting the Grass-
Pak
®
Switch
illustration. The proper measure-
ment 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 incre-
ments 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
fill the catcher differently than dry fluffy grass,
causing the signal 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 overfilling and
clogging
of the grass delivery chute begins
(regardless of mowing conditions).
