Due to initial belt stretch and to prevent the belt from slipping, check this adjustment after the first 2 hours, 4 hours and 8 hours of operation.
3. Adjust the RH blade drive belt using a belt tension gauge. Adjust the belt so that the belt moves 1/2" with 10 pounds of pressure. Adjust the tension by tightening or loosening the
4. Replace the belt cover.
Nut Washer
Deck
"J" Bolt
Belt
Figure 3. Cutter Deck Belt Adjustment R.H.
CUTTER DECK ADJUSTMENTS
Due to the many cutting conditions that exist, it is difficult to suggest a cutter deck setting that will work for every lawn. There are two adjustments that can be made on these decks, pitch and height.
PITCH is the angle of the blades (comparing front to rear). A 1/4" downward pitch (front of deck down) is recommended for best cutting performance.
HEIGHT is the nominal distance the blade is off of the ground. This measurement is made with the blades pointed side to side and distance is measured between cutting tip and ground. (Also see Blade Height Adjustment)
Changes to the cutting height can be achieved by repositioning the cutter deck. (This adjustment will also effect the pitch of the deck). There are three available positions (see figure 4).
LOW CUT (1 3/4"- 3")
MID RANGE (2 1/2"- 3 3/4")
HIGH CUT (3 1/4"- 4 1/2")
CUTTER DECK HEIGHT ADJUSTMENT | SC405G |
Figure 4. Cutting Height Adjustment
Caster spacers also can be repositioned to change cutting heights and to change the pitch of the deck. (See figure 5)
PIN
SPACERS
REPOSITIONING SPACERS | SC406G99 |
Figure 5. Caster Wheel Spacers
BLADE HEIGHT ADJUSTMENT
Adjusting the blade height can be done by moving any number of the five smaller 1/4" spacers on the blade mounting bolts to the top of the spindle shaft or below the spindle shaft.
All blades should be positioned equally.
For best cut and discharge, a minimum of three spacers should be installed between the blade and the spindle (See figure 6).
6
