Owner`s manual

Page 10
See manual for further
adjustment required
Speed
Sensitivity
Adjustment
Figure: Decal on side
of Control Console
How to Change the Speed/Sensitivity
Adjustment
The controls are initially set with the Speed/
Sensitivity Adjust-
ment in the faster,
more sensitive posi-
tion. If an operator is
not completely famil-
iar with mower op-
eration the operator
may desire to de-
crease the ground speed approximately 25-30%.
The slower setting has a corresponding de-
crease in the sensitivity of the controls. In other
words, a given amount of movement of the control
levers will cause about a 25-30% change in the
ground speed making the controls less sensitive.
After stopping the engine, the adjustment is
made by removing the pins that hold the control
cables onto the control lever from the current
holes in the control levers and reinstalling them
and the cable into the alternate holes. The top
holes closest to the control handles are for the
faster, more sensitive setting and the bottom
holes farthest from the control handles are the
slower, less sensitive setting. BE SURE THE
PINS IN THE CONTROL CABLES ARE SE-
CURELY IN PLACE AND LATCHED ONTO THE
CABLE YOKE EACH TIME YOU REMOVE
THEM. YOU MUST USE NEW PINS IF THE OLD
ONES ARE WORN, BROKEN, OR BENT. You
must then perform the Tracking Adjustment
described below.
How to Perform the Tracking Adjust-
ment
First ensure that the tire pressure is equal on both
rear drive tires and equal on both front tires. Drive
the mower on a level parking lot with engine at full
throttle. Check that the mower drives in a straight
line when both hand controls are held to the full
speed position which is up against the stationary
control bar. If not, park the mower and stop the
engine. The adjustment is made by removing the
pin from one of the ends of the control cables and
screwing the cable yoke to either make the
control cable longer or shorter. Either end of the
cable can be adjusted. Before changing the
length of the cables several facts are important to
know:
In the faster Speed/Sensitivity setting neither
cable should be shortened so much that at full
speed it pulls the pump control lever (on the sides
of the pumps) against the pump's internal stop.
The pumps have an internal stop that is not
designed to take this type of force and could
eventually cause pump leakage or other damage
to the pump. Therefore, to reach the maximum
capable speed, the cables should be shortened
one turn at a time until you can feel in the hand
control that the internal stop has been contacted,
then lengthen the cable one turn. You will feel the
slight resistance (there is no need to start the
engine or even replace the pin while checking
this incrementally, just put the cable yoke pin in
the hole in the lever and test it by squeezing the
handle to full fast position). Remember, this
procedure does not apply if the Speed/Sensitiv-
ity Adjustment is in the slower setting, otherwise
you will run out of threads on the cable ends and
the mower will go fast but will lose most or all of
its reverse capability and the gap between the
stationary bar and the control levers becomes
excessive when at the neutral position.
So, if the mower is tracking to the left, either the
left side needs to go faster (by lengthening the
cable) or the right side needs to go slower (by
shortening the cable). And, if the mower is track-
ing to the right either the right side needs to go
faster (by lengthening the cable) or the left side
needs to go slower (by shortening the cable). It is
important that neither cable should be shortened
too far as mentioned above.
The only reference point to limit the adjustment
from becoming extremely off is the relative
position of the pump internal stop and the sta-
tionary bar in the faster Speed/Sensitivity set-
ting. Therefore, if everything is way off either
because you are installing new parts or other
reasons you should only use the faster Speed/
Sensitivity setting to get the tracking to be accu-
rate and then change to the slower speed range
and adjust the tracking only one or two turns on
either side. BE SURE THE PINS IN THE
CABLE YOKES ARE SECURELY REPLACED
EACH TIME YOU REMOVE THEM. YOU MUST
USE NEW PINS IF THE OLD ONES ARE
WORN, BROKEN, OR BENT. After getting the
mower to track straight readjust the neutral if