Exmark FMD604 Operator's Manual page 18

NOTE: If the positive cable is also disconnected, connect the positive (red)
cable first, then the negative (black) cable. Slip insulator boot over the positive
terminal.
NOTE: If time does not permit charging the battery, or if charging equipment is
not available, connect the negative battery cables and run the vehicle
continuously for 20 to 30 minutes to sufficiently charge the battery.
3.4 DRIVE WHEELS
3.4.1 Check air pressure in drive tires; recommended pressure is 12-16 psi. Measure
circumference of each drive tire. Adjust tire pressure within 12-16 psi range to
try to make tire circumferences match as closely as possible.
3.5 MOWER DECK INSTALLATION
3.5.1 Release the wheel drive system by opening the drive wheel release valves. See
Section 4.1.11. Roll the tractor to the mower deck assembly and allow the tractor
assembly to tip backward until the rear of the engine deck contacts the ground.
3.5.2 Remove mower deck support frame from mower deck by removing the two
hairpins and spacers from the front deck support pins and by removing the two
hairpins and spacers from the rear deck support pins. See Figure 1.
3.5.3 Install mower deck support frame to tractor engine deck and secure using (8)
3/8-16 x 1 1/4" screws, (8) disc spring washers and (8) whizlock nuts from bolt
bag. See Figure 1.
NOTE: Place spring washer cone side against bolt head (cupped side away from head)
and install to outside of support frame as shown in Figure 1. Install with whizlock
nuts to the inside of engine deck. Tighten until spring washers are flat.
3.5.4 Position tractor with mower deck support frame in place, over the mower deck.
POTENTIAL HAZARD
When mower deck is not installed or the two front
support rod hairpins are removed, the unbalanced
weight of the tractor or tractor with mounted mower
support frame may cause the front of the unit to rise
suddenly.
WHAT CAN HAPPEN
If the unit rises suddenly, injury may occur.
HOW TO AVOID THE HAZARD
Securely hold down the front end of the unit when the
mower deck is not installed.
Align and re-install the mower deck support pins into the support frame. Install
the two spacers and hairpins onto the front support pins and the two hairpins and
spacers onto the rear support pins. See Figure 1.
CAUTION
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