Craftsman 28790 Operation Manual - Page 29

Mower, Belt Replacement

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Figure 38. Orient Blades Front-to-Back Front To Back Leveling If the cut is uneven, the mower may need leveling. Unequal or improper tire pressure may also cause an uneven cut. See CHECK TIRE PRESSURE. 1. Turn the blades front-to-back as shown in Figure 38. Measure the distance from the ground to front tip of center blade, and from ground to rear tips of left hand and right hand blades (Figures 35 & 38). Front tips should be 1/8"-1/4" (3-6 mm) higher than rear tips. If not, proceed to step 2. 2. The front mower hitch rod (A, Figure 39) is used to adjust front-to-back leveling. To raise or lower the front of mower deck, loosen the two rear jam nuts (B) on both sides of the hitch rod (A). Adjust the front jam nuts (C) on both sides of the hitch rod (A) to adjust the deck level. When adjusted correctly, tighten the rear jam nuts (B) to lock hitch rod in place. Figure 43. Front-to-Back A. Hitch Rod B. Rear Jam Nut C. Front Jam Nut Leveling MOWER BELT REPLACEMENT Mower Drive Belt Replacement 1. Park the rider on a level surface. Disengage the PTO, turn off the engine and set the ground speed control levers to PARK. Remove the key. 2. Use the idler pulley arm (K, Figure 40) to release belt tension and remove the mower drive belt (F) from the PTO pulley (G). 3. Remove the belt from the remaining deck pulleys. Note: It is not necessary to remove the mower deck. 4. Install the new belt (F) as shown in Figure 40. Arbor Drive Belt Replacement Contact a Sears Parts & Repair Center for replacement of the arbor drive belt (A, Figure 40). 29

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Figure 38. Orient
Blades Front-to-Back
Front To Back
Leveling
If the cut is uneven, the mower may need leveling.
Unequal or improper
tire pressure may also cause an
uneven cut. See CHECK
TIRE PRESSURE.
1. Turn the blades front-to-back
as shown in Figure 38.
Measure the distance from the ground to front tip of
center blade, and from ground to rear tips of left hand
and right hand blades (Figures
35 & 38). Front tips
should be 1/8"-1/4"
(3-6 mm) higher than rear tips. If
not, proceed to step 2.
2. The front mower hitch rod (A, Figure 39) is used to
adjust front-to-back
leveling.
To raise or lower the
front of mower deck, loosen the two rear jam nuts (B)
on both sides of the hitch rod (A). Adjust the front
jam nuts (C) on both sides of the hitch rod (A) to
adjust the deck level. When adjusted
correctly,
tighten the rear jam nuts (B) to lock hitch rod in place.
Figure 43.
Front-to-Back
Leveling
A. Hitch Rod
B. Rear Jam Nut
C. Front Jam Nut
MOWER
BELT REPLACEMENT
Mower
Drive
Belt Replacement
1.
Park the rider on a level surface. Disengage
the PTO,
turn off the engine and set the ground speed control
levers to PARK. Remove the key.
2.
Use the idler pulley arm (K, Figure 40) to release belt
tension and remove the mower drive belt (F) from the
PTO pulley (G).
3.
Remove the belt from the remaining deck pulleys.
Note: It is not necessary
to remove the mower deck.
4.
Install the new belt (F) as shown in Figure 40.
Arbor
Drive
Belt Replacement
Contact a Sears Parts & Repair Center for replacement
of the arbor drive belt (A, Figure 40).
29