Exmark FMD 604 - Manual (Page 33)

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FIGURE 6
CUTTING HEIGHT ADJUSTMENT
FIGURE 7
ANTI-SCALP ROLLER BOLT INSTALLATION
ANTI-SCALP ROLLER AND
CUTTING HEIGHT ADJUSTMENT
c) Adjust anti-scalp rollers for Normal Operating Conditions. Place rollers in
one of the positions shown in Figure 7. Rollers will maintain 3/4 in. (19 mm)
clearance to the ground to minimize gouging and roller wear or damage.
For Maximum Deck Flotation, place rollers one hole position lower.
Rollers should maintain 1/4 in. (6.4 mm) clearance to ground. Do Not
adjust rollers to support the deck. Be sure roller bolts and nuts are
installed with the spring disc washer between head of the bolt and
mounting bracket.
Torque to 40-45 ft-lbs. (54-61 N-m), or loss of roller may result.
d) When operating in extremely rough conditions it may be necessary to
position the anti-scalp rollers one or two holes higher than described in
"c" to prevent damage to the rollers and/or bolt failure (See Figure 7).
NOTE: When anti-scalp rollers are placed in these positions, reduced
deck flotation will result.
6.2.2 Transmission drive belt tension adjustment: No adjustment necessary.
6.2.3 Mower deck drive belt: No adjustment necessary.
6.2.4 Blade drive belt tension. No adjustment necessary.
LEFT HAND
SIDE SHOWN
FOR CUTTING HEIGHTS ABOVE
3.5” (8.89 CM) USE THE BOTTOM HOLE
THE ROLLERS WILL STILL BE
EFFECTIVE AGAINST SCALPING