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BLADE ADJUSTMENT
To assure proper operation of the cutting unit, there
must be .25 +.12" clearance between the tips of the
wing and center cutting unit blades.
1. Raise cutting unit so blades are visible and block
center deck section so it cannot fall accidentally. Wing
decks must be horizontal to center cutting unit.
2. Rotate a center and adjoining wing blade so there
blade tips are aligned. Measure distance between blade
tips, distance should be approximately .25 +.12.
3. To adjust distance, locate adjuster bolt on rear
outside corner of center cutting unit. Loosen jam nut on
adjuster bolt. Loosen or tighten adjuster bolts until
.25 +.12 clearance is attained, then tighten jam nut.
4. Repeat procedure on opposite side of cutting deck.
IMPORTANT: Blade plane is adjusted at the factory
and should not need further adjustment.
MAINTENANCE
(Fig. 19–20)
15
ADJUSTING BELT TENSION
Each cutting unit drive belt is individually tensioned by a
self tensioning spring loaded idler. When the idlers are
properly adjusted, the black plastic sleeve should be
.12" to .25" from the edge of the idler support. When .50"
of the plastic sleeve is exposed, an adjustment is
required. To assure proper operation of the cutting unit,
check adjustment of spring loaded idler after first10
hours of operation and every time maintenance on the
belt is required.
1. Lower cutting unit to the shop floor. Remove belt
covers from center and wing cutting units.
2. Measure the length of the exposed black plastic
sleeve. If distance is .12" to .25" , spring loaded idler is
properly adjusted and belt tension is correct. If
dimension is not correct, proceed to next step.
3. Loosen (2) flange head nuts securing idler adjustor
tube to top of cutting deck.
4. Loosen jam nut on adjusting screw and rotate screw
until the black plastic sleeve is flush (even) with the edge
of idler support.
5. When distance is attained, tighten jam nut on
adjusting screw and (2) flange head nuts securing idler
adjustor tube to top of cutting deck.
6. Check adjustment on other adjustors and repeat
procedure if required.
REPLACING DRIVE BELTS
The blade drive belts are very durable, but after many
hours of use, the belts will show signs of wear. Signs of a
worn belt are: squealing when belt is rotating, blades
slipping when cutting grass, frayed edges, burn marks
and cracks. Replace a belt if any of these conditions are
evident.
1. Lower cutting unit to the shop floor. Remove belt
covers from center and wing cutting units.
(Fig. 21)
(Fig. 22– 25)
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