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Maintenance
6. Inspect the lled tank valve and tting openings
for dirt, debris, or damage.
7. Inspect the tank hose connection tting for
damaged or missing o-rings.
8. Make sure the replacement tank type and size
match the tank specication decal.
9. Mount the tank by aligning the slot with the
mounting tab as shown in
Figure 14
Figure 14
1. Tank slot
3. LPG Tank
2. Mounting tab
Important: Valves and gauges may not
function properly if the LPG tank is not
installed correctly.
10. Latch the bracket and make sure the tank is
securely fastened to the mower.
11. Carefully connect the fuel hose; the threads are
LH. Make sure the hose is not kinked.
12. Slowly open the fuel valve to equalize the pressure
in the tank. If the fuel valve is opened too quickly,
the pressure relief valve is equipped with a back
pressure check valve that will shut off the fuel
supply. If this happens, close the fuel valve
completely and wait ve seconds. Slowly open
the fuel valve.
13. Check for leaks as described in the Inspection
section in Safety.
Change Hydraulic System
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Service Interval: After the rst 250 hours
Every 500 hours/Yearly
(whichever comes
rst) thereafter
(Every 250 hours/Yearly if
using Mobil 1 15W50)
Note: Use only Exmark Part No. 109-4180 for
Summer use above 32°F (0°C) or P/N 1-523541 for
Winter use below 32°F (0°C) (Refer to Transmission
section in Specications for lter specications).
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Carefully clean area around lter. It is important
that no dirt or contamination enter hydraulic
system.
3. Unscrew lter to remove and allow oil to drain
from reservoir.
Important: Before reinstalling new lter, ll
it with Exmark Premium Hydro oil and apply
a thin coat of oil on the surface of the rubber
seal.
Turn lter clockwise until rubber seal contacts the
lter adapter, then tighten the lter an additional
2/3 to 3/4 turn.
4. Fill reservoir as stated in Check Hydraulic Oil
Level.
Exmark Premium Hydro Oil is recommended.
Refer to the chart for an acceptable alternative:
Hydro Oil
Change Interval
Exmark Premium Hydro
Oil (Preferred)
500 Hours
Mobil 1 15W50
250 Hours
5. Loosen lter 1/2 turn and allow a small amount
of oil to leak from the oil lter (this allows air to
be purged from the oil lter and supply hose from
the hydraulic reservoir). Turn lter clockwise
until rubber seal contacts the lter adapter. Then
tighten the lter an additional 2/3 to 3/4 turn.
6. Raise the rear of machine up and support with
jack stands (or equivalent support) just high
enough to allow drive wheels to turn freely.
7. If either drive wheel does not rotate, one or both
of the charge pumps (located on the top of the
main pump as shown in
Figure 15) may have lost
their “prime”. Refer to Hydraulic System Air
Purge section.
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