Husqvarna 968999102 / W3612A - Manual (Page 13)

13
BRAKE / TRACTION ADJUSMENT
1. Disconnect the brake linkage from the brake
band arm.
2.With the mower in gear, place the drive levers
in the drive position. Firmly pull back on the
handles until the tires slide to seat the drive
belts into the pulleys.
3. Measure the distance between the back drive
lever slot and the neutral bail. It should be
between 3/16 and 1/4" but not exceeding 1/4".
See Figure #3.
4. If the clearance is less than 3/16”, disconnect
the drive lever from the idler arm by removing
the retaining ring.
5. Adjust the drive linkage to the proper clear-
ance by screwing it into the yoke at the drive
lever end of the linkage. This will achieve proper
clearance if the distance is less than 3/16”.
Screw the linkage out if it is greater than 1/4".
NOTE:
More or less brake pressure may be desired
depending on the operator or conditions of
operation. To increase pressure tighten the
wing nut on the brake linkage.
OPERATOR PRESENCE SWITCH ADJUST-
MENT
The operator presence switches can be ad-
justed by loosening the screws on the back side
of the console and sliding the switch left or right.
The O.P. switch plunger should just come in
contact with the O.P. lever when the operator
presence levers are released.
BLADE SWITCH ADJUSTMENT
The blade engagement switch can be adjusted
by loosening the screws on the blade engage-
ment bracket and moving the switch up or
down. The blade switch should be adjusted so
the plunger is fully depressed when the engage-
ment lever is fully disengaged.
ADJUSTMENTS - DRIVE BELTS
For all drive belts, tension should be set so that
belt vibration is minimized or eliminated when
belts are moving during normal operation. A
properly tensioned belt should have 1/4" to 3/8"
deflection at the center of belt span between
pulleys when blades are engaged.
Blade drive belt tension is preset at the factory.
NOTE:
DO NOT over tighten belt. Excessive tension
will decrease belt and spindle bearing life.
BLADE DRIVE BELT ADJUSTMENTS
WARNING
BEFORE PERFORMING ADJUSTMENTS
ON BLADE BELT, TURN MOWER OFF,
CLOSE FUEL VALVE, AND DISCONNECT
SPARK PLUG WIRE.
1. Remove front deck belt shield.
2. Loosen whiz nut on turnbuckle.
3. Set belt tension when engagement lever is in
the engaged position.
4. To increase belt tension rotate turnbuckle
toward the rear of the mower until desired
tension is gained. Do not over tighten belts, to
much tension will reduce belt and spindle
bearing life. See figure # 6
5. Tighten whiz nut on turnbuckle and install belt
shield.
Figure 3
Setup & Adjustments