Loading ...
Loading ...
Loading ...
To Remove Blade
• Remove the bolt and bell washer which hold the blade-pulley assembly to the engine crankshaft. See Figure
10. Remove the assembly from the crankshaft,
• Remove the two bolts and lock nuts from the blade assembly.
• Remove the blade from the blade adapter and pulley.
To Replace Blade:
• Before reinstalling the blade-pulley assembly to the unit, lubricate the engine crankshaft and the inner surface
of the blade adapter with light oil or engine oil.
• Also lubricate the bolt holes, bolt and the inner surface of the nuts.
• Install the blade adapter on the pulley with the "star" away from the pulley. See Figure 10.
Lock Nut Pulley
Assembly
Blade Lock Nut
Adapter
Blade
Hex Bolt
Bell -lex Bolt
Washer
Bolt
FIGURE 10
• Place the new blade on the blade adapter with the side marked bottom (or with part number) facing away
from the adapter.
• Secure the blade to the assembly with two hex bolts and lock nuts. Tighten the hex bolts to the
recommended torque. Refer to 'Blade Mounting Torque' section on this page.
• Install the blade assembly on the crankshaft. Secure with the hex bolt and bell washer (cupped side of
washer to blade) and tighten to the recommended torque. Refer to 'Blade Mounting Torque' section on this
page,
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 of this manual.
WARNING: To ensure safe operation of your unit, all nuts and bolts must be checked periodically
for correct tightness,
To Sharpen Blade:
• 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.
NOTE: 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.
Blade Mounting Torque:
Blade adapter bolts: 120 inJbs, minimum, 150 in.lbs, maximum.
Center bolt: 450 in.lbs, minimum, 600 in.lbs, maximum.
15
Loading ...
Loading ...
Loading ...