Model 931 44-Inch Rear Discharge Mowing Deck8 - MTD Garden Tractors User Manual

For Parts Call 606-678-9623 or 606-561-4983
8-1.1 Deck Belt Removal and Replacement.
WARNING
Disconnect spark plug wire and ground it
against engine. Block the wheels of the unit.
1. Remove deck. Refer to previous section and
follow instructions in reverse order.
2. Remove belt guard by unhooking spring and
removing two self-tapping screws. See Figure
8-6.
3. Remove first drive belt.
4. Remove both right and left hand pulley covers
by removing self-tapping screws.
5. Pivot spring-loaded idler and lift belt off.
6. Remove belt from around the three deck pul-
leys.
7. Reassemble in reverse order.
8-2. MODEL 931 44-INCH REAR DISCHARGE
MOWING DECK (See Figure 8-7).
8-2.1 Timing the Blades.
1. Remove center blade bolt on either blade
assembly.
2. Rotate blade assembly on the cutting deck and
reassemble the other blade assembly at 90°
exactly as shown. See Figure 8-9 on page 8-9.
For blade mounting torques, see Table 8-1.
www.mymowerparts.com
Table 8-1. Model 194-935 Blade
Mounting Torques
BOLT SIZE
3/8-inch diameter
5/26-inch diameter
If the blade assemblies are not timed, it will
affect the cut of the grass and the discharge.
The blades should be at right angles to each
other for proper timing position. If the blade
assemblies are timed improperly, it will
the cut of the grass and the discharge. SERI-
OUS DAMAGE TO THE BLADES, SPINDLES,
BELT AND DECK CAN OCCUR IF THE
BLADES HIT EACH OTHER.
Blades cannot be placed in the two additional
spots provided on the blade disc. This is a
timed deck and the blades will hit each other
and destroy themselves and the deck assem-
bly.
Swing back blades are beneficial to the cus-
tomer in that if he or she hits something the
blades will absorb some shock as they swing
back. These blades must not be torqued down
too tight—if they are, you could possibly lessen
your cutting diameter if the blades are only par-
tially swinging out. Blades must be in the fully
out position or you will not get the full 44 inch
cut. Blades need to swing back and forth
freely.
8-6
MINIMUM MAXIMUM
INCH INCH
POUNDS POUNDS
375 450
150 250
NOTE
WARNING
affect
WARNING
NOTE