Husqvarna YTH20B42T Lawn Mower User Manual


 
20
SERVICE AND ADJUSTMENTS
02966
A
A
02548
B
B
NOTE: Each full turn of the adjustment nut will change
mower height about 1/8".
• Recheck measurements, adjust if necessary 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.
FRONT-TO-BACK ADJUSTMENT (See Figs. 24 and 25)
IMPORTANT: Deck must be level side-to-side.
To obtain the best cutting re sults, the mower blades should
be adjusted so the front tip is 1/8" to 1/2" lower than the
rear tip when the mower is in its highest position.
CAUTION: Blades are sharp. Protect your
hands with gloves and/or wrap blade with
heavy cloth.
• Raise mower to highest position.
Position any blade so the tip is pointing straight forward.
Measure distance (B) to the ground at front and rear
tip of the blade.
• If front tip of blade is not 1/8" to 1/2" lower than the
rear tip, go to the front of tractor.
• With an 11/16" or adjustable wrench, loosen jam nut
A several turns to clear adjustment nut B.
• With a 3/4" or adjustable wrench, turn front link adjust-
ment nut (B) clockwise (tighten) to raise the front of
mower, or, counterclockwise (loosen) to lower the front
mower.
FIG. 23
FIG. 24
B
02950
Tighten adjust nut
B to raise mower
Loosen adjust nut
B to lower mower
Loosen jam nut A fi rst
A
FIG. 25
TO REPLACE MOWER DRIVE BELT
(See Fig. 26)
MOWER DRIVE BELT REMOVAL
Park tractor on a level surface. En gage parking
brake.
• Lower attachment lift lever to its lowest position.
• Remove any dirt or grass clippings which may have
accumulated around mandrels and entire upper deck
surface.
Remove belt from electric clutch pulley (M), both mandrel
pulleys (R) and all idler pulleys (S).
MOWER DRIVE BELT INSTALLATION
• Install belt around all mandrel pulleys (R) and around
idler pulleys (S) as shown.
• Install belt onto electric clutch pulley (M).
IMPORTANT: Check belt for proper routing in all mower
pulley grooves.
• Raise attachment lift lever to highest position.
PRECISION SIDE-TO-SIDE ADJUSTMENT
(See Fig. 23)
• With all tires properly infl ated, park tractor on level
ground or driveway.
CAUTION: Blades are sharp. Protect
your hands with gloves and/or wrap
blade with heavy cloth.
• Raise mower to its highest position.
• At both sides of mower, position blade at side and
measure the distance (A) from bottom edge of blade
to the ground. The distance should be the same on
both sides.
• If adjustment is necessary, see steps in Visual Adjust-
ment instructions above.
Recheck measurements, adjust if necessary until both
sides are equal.