MAINTENANCE AND SERVICING
Form 169552 / 169554 / 169555
170
Revision A
7.11.5.3 Knife Drive Valve Block
The ON/OFF valve on the valve block regulates
the knife speed, and is mounted on top of the
knife drive pump.
The flow to the knife drive is mechanically set on
the pump itself.
7.11.5.4 Header Drop Rate
The header should lower gradually when the
lower header switch is pressed.
From full height to ground should take
approximately 3.5 seconds.
Adjust as follows:
DANGER
Stop engine, and remove key from ignition
before leaving Operator's seat for any
reason. A child or even a pet could engage
an idling machine.
a. Lower header to ground, stop engine, and
remove key.
b. Move maintenance platform rearward.
c. Loosen jam-nut (A) on needle valve, and turn
screw (B) clockwise to decrease the drop rate,
or counter clockwise to increase the drop rate.
d. Tighten jam-nut (A).
e. Close platform and engine compartment hood.
f. Check drop rate, and re-adjust as required.
B
A