Husqvarna YTH145 Owner's Manual page 22

SERVICE AND ADJUSTMENTS
• Make sure attachment clutch and ignition switches are
in "OFF" position.
• Adjust the three nylon locknuts until space between
clutch plate and rotor measures .012" at all three slot
locations cut in the side of brake plate.
NOTE: After installing a new electric clutch, run tractor at
full throttle and engage and disengage electric clutch 10
cycles to wear in clutch plate.
ROTOR
SLOT (3)
NYLON
LOCKNUT (3)
TO REPLACE MOTION DRIVE BELT
(See Fig. 29)
Park the tractor on level surface. Engage parking brake.
For assistance, there is a belt installation guide decal on
bottom side of left footrest.
• Remove mower (See "TO REMOVE MOWER" in this
section of this manual.)
• Disconnect clutch wire harness.
• Remove clutch locator.
• Remove belt from stationary idler and clutching idler.
• Pull belt slack toward rear of tractor. Carefully remove
belt upwards from transmission input pulley and over
cooling fan blades.
• Pull belt toward front of tractor and remove downwards
from around electric clutch.
• Install new belt by reversing above procedure.
ELECTRIC
CLUTCH
CLUTCHING
IDLER
STATIONARY
IDLER
TRANSMISSION
INPUT PULLEY
TO ADJUST MOTION CONTROL LEVER (See
Fig. 30)
The motion control lever has been preset at the factory and
adjustment should not be necessary.
If for any reason the motion control lever will not hold its
position while at a selected speed, it may be adjusted at the
friction pack located on the right side of transmission.
CLUTCH PLATE
BRAKE
PLATE
FIG. 28
CLUTCH LOCATOR
CLUTCH
WIRE
HARNESS
FIG. 29
• Park tractor on level surface. Stop tractor by turning
ignition key to "OFF" position, and engage parking
brake.
• Adjust motion control lever by tightening adjustment
locknut one half (1/2) turn.
NOTE: If for any reason the effort to move the motion
control lever becomes too excessive, reverse the above
adjustment procedure by loosening locknut 1/4 to 1/2 turn.
Road test tractor after adjustment and repeat procedure if
necessary.
TRANSMISSION REMOVAL/REPLACEMENT
Should your transmission require removal for service or
.012"
replacement, it should be purged after reinstallation and
before operating the tractor. See "PURGE TRANSMIS-
SION" in the Operation section of this manual.
TO ADJUST STEERING WHEEL ALIGNMENT
If steering wheel crossbars are not horizontal (left to right)
when wheels are positioned straight forward, remove steer-
ing wheel and reassemble per instructions in the Assembly
section of this manual.
FRONT WHEEL TOE-IN ADJUSTMENT
Front wheel toe-in is required for proper steering operation.
Toe-in was set at the factory and adjustment should not be
necessary. If parts in the front axle or steering mechanism
have been replaced or damaged, check toe-in and adjust
if necessary.
TO CHECK TOE-IN (See Fig. 31)
• Position front wheels straight ahead.
• Measure distance between wheels at front and rear of
tires (dimensions "A" and "B").
• Front dimension "A" should be 1/8" to 1/4" less than
rear dimension "B".
TO ADJUST TOE-IN (See Figs. 31 and 32)
• Loosen jam nuts at adjustment sleeves on tie rod.
• Adjust tie rod until dimension "A" is 1/8" to 1/4" less than
dimension "B".
• Tighten jam nuts securely.
22
ADJUSTMENT
LOCKNUT
FIG. 30