Making Adjustments - Troy-Bilt 466 Operator's Manual

• Secure with the hex bolt and blade belt support and
tighten to the recommended torque. Refer to 'Blade
Mounting Torque' section on this page.
IMPORTAI'fT: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 lawn mower, check all nuts and bolts
periodically and tighten if necessary.
Blade MountingTorque:
Blade adapter bolts: 120 in.lbs, minimum, 150 inJbs.
maximum.
Center bolt: 450 in.lbs, minimum, 600 inJbs, 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.
An unbalanced blade will cause excessive vibration
when rotating at high speeds, may cause damage to
the mower and/or 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.
Replacing DriveBelt
• Remove the two shoulder screws which secure the
front drive cover to the mower deck. See Figure 14.
• Remove the front drive cover from the unit by lightly
pressing inward on the sides of the front drive
cover. This will release the tabs that secure the
front drive cover to the height adjuster brackets.
• Remove the idler and accompanying hardware
from the idler bracket using 7/16" wrench and
socket. See Figure 14.
• Remove the belt from the transmission pulley as
shown in Figure 14.
• Lift and stabilize the front of the deck.
• Loosen the center hex bolt and lower the blade and
engine pulley until there is adequate clearance to
move the belt past the belt keeper.
• Remove the belt from the engine pulley and around
the blade. See Figure 15.
• Reassemble in reverse order with new belt.
Right Front Left Front
Wheel Wheel
\\4 J
Pulley
Figure 15
Replacing RearFlap
• To remove rear flap, cut off the flat end of the wire
rod which secures it to the deck. See Figure 16.
• Attach the new flap and new rod to deck, bending
the ends of the new rod over to secure to deck.
Rear Discharge
Door
Handle
\
Bracket
'\
\
\
\
Handle
\ Bracket
\
\
Rear
Rap
Figure 16
SECTION 8: MAKING ADJUSTMENTS
HandleHeight
Your mower is shipped with the handle in the higher
height position. To lower height, proceed as follows.
• Remove the starter rope from the rope guide.
• Remove the upper handle by removing the hand
knobs and carriage bolts. Lay the upper handle out
of the way, being careful not to bend or kink cables.
13