Fuel Tank Mounting Hardware Specifications

Maintenance

6.Add oil until it reaches the FULL COLD line on the expansion reservoir.

Exmark Premium Hydro Oil is recommended. Refer to the chart for an acceptable alternative:

Hydro Oil	Change Interval

Exmark Premium Hydro	500 Hours
Oil (Preferred)
Mobil 1 15W50	250 Hours

7.Raise the rear of machine up and support with jack stands (or equivalent support) just high enough to allow drive wheels to turn freely.

CAUTION

Raising the mower deck for service or maintenance relying solely on mechanical or hydraulic jacks could be dangerous. The mechanical or hydraulic jacks may not be enough support or may malfunction allowing the unit to fall, which could cause injury.

Do Not rely solely on mechanical or hydraulic jacks for support. Use adequate jack stands or equivalent support.

8.Start engine and move throttle control ahead to 1/2 throttle position. Disengage parking brake.

A.With the bypass valve open and the engine running, slowly move the directional control in both forward and reverse (5 or 6 times).

B.With the bypass valve closed and the engine running, slowly move the directional control in both forward and reverse directions (5 to 6 times).

C.It may be necessary to repeat steps A and B until all the air is completely purged from the system. When the transaxle operates at normal noise levels and moves smoothly forward and reverse at normal speeds, then the transaxle is considered purged.

Note: Do Not change hydraulic system oil (except for what can be drained when changing filter), unless it is felt the oil has been contaminated or been extremely hot.

Changing oil unnecessarily could damage hydraulic system by introducing contaminates into the system.

Fuel Tank — Mounting Hardware Specifications

Service Interval: As required

When installing the nuts on the fuel tank studs, fully tighten the nyloc nut and back off 1/2 turn. This allows for normal fuel tank expansion and contraction with changes in temperature and fuel levels.

Thread Locking Adhesives

Thread locking adhesives such as “Loctite 242” or “Fel-Pro, Pro-Lock Nut Type” are used on the following fasteners:

•Clutch retaining bolt in the end of engine crankshaft.

•Caster wheel spacer nuts.

•Cutter housing spindle nut.

Adhesives such as “Loctite RC/609 or RC/680” or “Fel-Pro Pro-Lock Retaining I or Retaining II” are used on the following:

Fuel tank studs, where studs are inserted into tank.

Mobil HTS Grease (Or Food-Grade Anti-seize)

Mobil HTS grease (or food-grade anti-seize) is used in the following locations:

•Between the cutter housing spindle and bearings.

•Between the cutter housing spindle and sheave.

•Under top cutter housing bearing guard.

Dielectric Grease

Dielectric grease is used on all blade type electrical connections to prevent corrosion and loss of contact.