Scag Power Equipment STHM Belt Alignment, Cutter Deck Adjustments, Blade Belt Tension Adjustment

Adjust the tension by tightening or loosening the nut on the J-bolt.

Nut

Deck

"J" Bolt

Adjusting the blade height can be done by moving any number of the five smaller spacers on the blade mount- ing bolts to the top or to the bottom of the spindle shaft. All blades should be positioned equally (See Figure 10).

The unit is shipped with one spacer on top of spindle and four underneath (See Figure 10).

This adjustment does not affect blade pitch.

Washer

Belt

SGB031

Figure 9. Blade Belt Tension Adjustment

4. Replace the belt covers.

BELT ALIGNMENT

Belt alignment is important for proper performance of your Scag mower. If you experience frequent belt wear or breakage, see your authorized Scag Service Dealer for belt adjustment.

Hex Nut-Torque	Cutter Blade
to 75 Lb-Ft
	Spacer 1/4"

Spindle	Cutter
	Deck
Shaft

Spindle	Hex Head
Assembly
	Bolt / Nut

Cutter Blade

Spacers1/4"

CUTTER DECK ADJUSTMENTS

Due to the many conditions that exist, it is difficult to suggest a setting that will work for every lawn. There are, however, two adjustments that should be made on the cutter deck: pitch and height.

PITCH is the angle of the blades (comparing front to rear).

HEIGHT is the nominal distance that the blade is off the ground. This measurement is made with the blades pointed side to side and distance is measured between cutting tip and ground.

Washer

Cutter Blade

Hex Head Bolt

Figure 10. Cutter Blade Adjustment

-NOTE-

For best results, keep the cutter deck high in relation to the engine deck and the blades low in the cutter deck; ie. 4 or 5 spacers below the spindle shaft.

Additional range to the cutting height can be achieved by repositioning the cutter deck in relation- ship to the engine deck. This adjustment also affects the pitch of the deck.

10