White Outdoor 693 User Manual

Page 14

Figure 14

HYDROSTATIC NEUTRAL CONTROL
ADJUSTMENT

The hydrostatic transmission control is in correct
adjustment when the tractor does not move with the
engine running, the clutch engaged and the
hydrostatic control lever in the neutral position.
If adjustment is necessary, follow these steps:

Raise both rear wheels off the ground by placing
blocks under the rear frame.

Remove transmission panel by removing the
parking brake knob, rubber boot on relief valve
and truss machine screws.

Loosen the hex jam nut on the speed selector
adjusting rod. See Figure 15.

Figure 15

Loosen the hex nut on the scissor mounting
bracket. See Figure 15.

Start the engine and run at full throttle.

Move the hydrostatic control lever until you find
neutral (rear wheels do not rotate in either
direction).

Depress the clutch-brake pedal until the scissor
brackets come together.

Shut off the engine.

Tighten hex nut on the scissor mounting bracket.

10. Thread the speed selector rod in or out of the

ferrule until the hydrostatic control lever lines up
in the neutral position on the speed control index
bracket.

11. Tighten hex jam nut against the ferrule.

12. Replace the transmission panel, rubber boot on

relief valve and parking brake knob.

13. Remove the blocks from under the frame and

test the operation of the tractor.

DECK LEVELING ADJUSTMENT

If an uneven cut is obtained, the deck may be
leveled by following instructions in Assembly section.

DECK ENGAGEMENT ADJUSTMENT

The cutting deck engagement may be adjusted to
make certain deck is disengaged when lift lever is in
the BLADES STOP position. Correct adjustment as
follows.
With the engine off, place the lift lever in the highest
cutting position (first position). Remove the cotter pin
and flat washer which secure the disengagement rod
to the stabilizer shaft assembly. See Figure 16.
Shorten the rod by threading it in until the ferrule is
against the back of the slot in the lift shaft assembly,
and the rod lines up with the hole in the stabilizer
shaft. For more belt tension the disengagement rod
must be lengthened. To decrease belt tension the
disengagement rod must be shortened.
Check the adjustment by placing the lift lever in the
BLADES STOP position. The deck should move up
and forward, allowing the belt to become loose. Start
and test for disengagement. Repeat procedure as
necessary.

Figure 16

Seat

Adjustment

Lever

Seat

Scissor

Bracket

Mounting

Hex Jam Nut

(Loosen

)

Scissor

Bracket

Speed Selector

Adjusting Rod

Hex Nut

(Loosen)

Flat Washer
Hairpin Clip

Disengagement Rod

Stabilizer Shaft

Assembly