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110907 01/09 9-27
should be such that the belt does not slip under normal operating load conditions, assuming the belt is not excessively
worn or damaged. As belt stretches and wears in, adjustment may become necessary. To increase belt tension, move
the spring chain one (or more) link(s) at the anchor bracket (FIG. 41). Installed spring length should be 8.40" ± .3"
originally with adjustments of .60" per chain link (FIG. 41).
IMPORTANT: Do not over tension the spring to compensate for a badly worn belt or pulley.
Engine RPM setting
The FasTrak Super Duty 48/54 is designed so that the engine will run at 3600 rpm with transaxle load only. At this
speed the transaxles are running at their maximum rated speed.
Deck leveling and height adjustment
The mower deck has three areas that may need to be checked and adjusted periodically. Before considering any
mower deck leveling adjustments, check that the tire air pressure is within the specified range.
DECK LEVEL ADJUSTMENTS
Leveling the deck must be done in the following manner and order:
1. Check tire pressures to make certain they are properly inflated before starting to level
deck. The recommended pressures are as follows:
WARNING: Stop engine. Make sure deck clutch switch is in the down (OFF) position. Remove
ignition key. Place control levers in the brake position before leaving machine.
2. Drive tractor onto hard flat surface.
3. Raise and lock deck into transport position.
4. Place 3.0” high deck support blocks under deck at the four corners shown in FIG. 43
FIG. 41 FIG. 42
Drive Wheels 8-12 PSI
Front Wheels 8-12 PSI
ANCHOR
SPRING
TENSION IDLER
CHAIN
BRACKET
spt2009_deck9.jpg
Spring Extension
8.40”
2.40”
Normal spring length
6.0”