Exmark Ultra Vac Frontrunner Operator's Manual page 22

Moving the LH sensor up works better in wetter conditions.
Moving the LH sensor down works better in dryer conditions.
4.2.2 Latches: The latches (Figure 10) can be adjusted. With the door closed, the
latch plate should be set so that the latch cams completely engage and contact the
latch plates bolted to the door.
4.2.3 Latch handle link: The latch handle needs to be able to snap over-center to keep
the latch cams tight against the door latch plates and the door pulled shut. The
length of the latch linkage is controlled by the two whizlock nuts on either side of
the latch link (Figure 10). The whizlock nuts should be adjusted so that reasonable
force on the handle is required to over-center and latch the door. Do not adjust so
that the over-center spring collapses completely when the door is fully latched.
FIGURE 9
FIGURE 10
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