• Be sure to install the blade with the side of the
blade marked "Bottom" (or with part number) facing
the ground when the mower is in the operating
position.
• Slide the blade adapter assembly onto the engine
crankshaft.
• Place the blade on the adapter. Be certain the
blade is aligned and seated on the blade adapter
flanges.
• Place blade bell support on blade. Make sure the
notches on the blade bell support are aligned with
small holes in the blade.
IMPORTANT: The bolt used to secure the blade to the
engine is specially heat-treated. Do not substitute. To
order replacement bolt, refer to the parts list in the back
of this manual.
,_ WARNING" To ensure safe operation of
your unit, all nuts and bolts must be checked
periodically for correct tightness.
BladeMountingTorque:
Center bolt: 450 in.lbs, minimum, 600 in.lbs, maximum.
To SharpenBlade:
• The blade can be sharpened with a file or on a
grinding wheel. Do not attempt to sharpen the
blade while it is still on the mower.
• Follow the original angle of grind as a guide. Make
sure that each cutting edge receives an equal
amount of grinding to prevent an unbalanced blade.
IMPORTANT:An unbalanced blade will cause excessive
vibration when rotating at high speeds, may cause
damage to the mower and could break causing
personal injury.
• Test the blade by balancing it on a round shaft
screwdriver or a blade balancer.
• If the blade is not balanced, remove metal from the
heavy side until it balances evenly.
ReplacingDriveBelt
• Remove two shoulder screws securing the front
drive cover to the mower deck. See Figure 14.
• Press inward on the sides of the front drive cover
and release the tabs that secure the front drive
cover to the height adjuster brackets. Remove drive
cover from the mower.
• Using a torx wrench, loosen the screw holding the
belt tension spring to the transmission. See Figure
14. Do not remove the screw completely. As you
loosen it, the tension on the belt will be released.
• Push the transmission up a little and slide the belt
off the transmission pulley.
• Lift the mower to access the belt from the underside
of the mower.
Loosen this screw
Shoulder
/Screw
€
Screw
Front Drive
Transmission Cover
Figure 14
• Slide the belt off the engine pulley and around the
blade. See Figure 15.
WARNING: As always, use a thick piece of
rag to handle the blade while sliding the belt
around it. Make sure the engine does not start
at all while doing this job.
Right Front Wheel
Left Front Wheel
Engine Pulley
Figure 15
• Replace with the new belt, working around the
blade. Make sure the belt is firmly seated on the
engine pulley while pulling from the other side and
sliding it around the transmission pulley.
• Put the mower down with all four wheels firmly
placed on one level.
• Tighten the screw, loosened earlier, to secure belt
tension spring to the transmission and reassemble
the front drive cover.
14
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