Specifications

To Remove Blade

• Remove the bolt and bell washer which hold the blade-pulley assembly to the engine crankshaft. See Figure

t2A, 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 12.

Lock Nut Pulley

,, Assembly

'\ ._/J"

Blade

Adapter ,.

Hex Bolt

..... Lock Nut

Blade

Hex Bolt

Bell Hex Bolt

Washer

FIGURE 12

• 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 section of this manual.

WARNING: To ensure safe operation of your unit, ell 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 while operator is

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 in.lbs, minimum, 150 in.lbs, maximum.

Center bolt: 450 in.lbs, minimum, 600 in.lbs, maximum.