To Adjust Attachment Clutch; Mower Drive Belt Installation; To Replace Mower Drive Belt; To Replace Motion Drive Belt - Husqvarna LOYTH20F42T Operator's Manual

Tighten adjust nut
B to raise mower
02950
Loosen jam nut A fi rst
NOTE: Each full turn of the adjustment
nut will change mower height about 1/8".
• Recheck measurements, adjust if nec-
essary until front tip of blade is 1/8" to
1/2" lower than the rear tip.
• Hold adjustment nut in position with
wrench and tighten jam nut securely
against adjustment nut.

TO REPLACE MOWER DRIVE BELT

MOWER DRIVE BELT REMOVAL
1. Park tractor on a level surface. En gage
parking brake.
2. Lower attachment lift lever to its lowest
position.
3. Remove any dirt or grass clippings
which may have accumulated around
mandrels and entire upper deck sur-
face.
S
R
R
B
A
Loosen adjust nut
B to lower mower
M
4. Remove belt from electric clutch pulley
(M), both mandrel pulleys (R) and all
idler pulleys (S).

MOWER DRIVE BELT INSTALLATION

1. Install belt around all mandrel pulleys
(R) and around idler pulleys (S) as
shown.
2. Install belt onto electric clutch pulley
(M).
IMPORTANT: Check belt for proper rout-
ing in all mower pulley grooves.
3. Raise attachment lift lever to highest
position.

TO ADJUST ATTACHMENT CLUTCH

The electric clutch should provide years
of service. The clutch has a built-in brake
that stops the pulley within 5 sec onds.
Eventually, the internal brake will wear
which may cause the mower blades to not
engage, or, to not stop as required. Ad-
justments should be made by a qualifi ed
service center.
1. Make sure attachment clutch and igni-
tion switches are in "OFF" po si tion.
2. Adjust the three nylon locknuts until
space between clutch plate and ro tor
measures .012" at all three slot loca-
tions 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
Clutch Plate
Slot (3)
Nylon
Locknut (3)

TO REPLACE MOTION DRIVE BELT

Park the tractor on level surface. Engage
parking brake. For ease of service there is
a belt installation guide decal on bottom of
left footrest.
BELT REMOVAL -
1. Remove mower (See "TO RE MOVE
MOWER" in this section of manual).
NOTE: Observe entire motion drive belt
and position of all belt guides and keepers.
2. Disconnect clutch wire harness (A).
3. Remove anti-rotation link (B) on right
side of tractor.
4. Remove belt from stationary idler (C)
and clutching idler (D).
5. Remove belt from centerspan idler (E).
23
.012"
Brake
Plate