7.8 TIRES. Scag Power Equipment SFW36-16BV, SFW48-16BV, GC-4D, SFW Belt Drive

R

Section 7 sharpened. Remove the blades for sharpening. See

"Blade Replacement."

- NOTE -

Keep the blades sharp. Cutting with dull blades not only yields a poor mowing job, but slows the cutting speed of the mower and causes extra wear on the engine and the blade drive by pulling hard.

B. BLADE SHARPENING

- NOTE -

If possible, use a file to sharpen the blade. Using a wheel grinder may burn the blade.

2. Raise the mower deck to the highest position. Place the lanyard pin in the highest cutting height position to prevent the cutter deck from falling.

3. Secure the cutter blades to prevent them from rotating, (use the optional Blade Buddy tool P/N

9212, to assist in securing the cutter blades), remove the blade attaching bolt. Remove the cutter blade, bolt, lockwasher and flatwasher from the spindle shaft. See Figure 7-4.

- NOTE -

Be sure that the blade is installed with the lift wing towards the top of the cutter deck.

4. Install the cutter blade on to the cutter spindle shaft.

Secure the blades from rotating and torque to

75 ft/lbs. See Figure 7-4.

- NOTE -

DO NOT sharpen the blades beyond 1/3 of the width of the blade. See Figure 7-3.

1. Sharpen the cutting edge at the same bevel as the original. See Figure 7-3. Sharpen only the top of the cutting edge to maintain sharpness.

Angle Blade Back

Do Not Cut In

CUTTER BLADE

LOCKWASHER x

30

X Must NOT Exceed

1/3 Blade Width

SGB033

2.

Figure 7-3. Blade Sharpening

Check the balance of the blade. If the blades are out of balance, vibration and premature wear can occur.

See your authorized Scag dealer for blade balancing or special tools, if you choose to balance your own blades.

C. BLADE REPLACEMENT

5/8-11 x 1-1/2" HEX HEAD BOLT

TORQUE TO 75 FT/LBS

FLATWASHER

7.8 TIRES

Figure 7-4. Blade Replacement

Check the tire pressures after every 8 hours of operation or daily.

Caster Wheels

Drive Wheels

25 PSI

12 PSI

WARNING

Always wear proper hand and eye protection when working with cutter blades.

1. Remove the ignition key before replacing the blades.

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