Exmark FMD604 Lubrication Chart, Note Front caster tires have permanent tire sealant installed

NOTE: It is necessary to lightly touch the charge pump cap with your hand to check the pump temperature. If the cap is too hot to touch, turn off engine. The pumps may be damaged if the pump becomes too hot.

If either drive wheel still does not rotate continue with step (d).

d)Thoroughly clean the area around each of the charge pump housings.

e)To “prime” charge pump, loosen two hex socket head capscrews (shown in Figure 7) 1-1/2 turns only. Make sure engine is not running. Lift the charge pump housing upward and wait for a steady flow of oil to flow out from under the housing. Retighten the capscrews. Do this for both pumps.

Note: Hydraulic reservoir can be pressurized up to 5 psi to speed this process.

f)If either drive wheel still does not rotate, stop and repeat steps (d) and (e) above for the respective pump. If wheels rotate slowly, the system may prime after additional running. Check oil level as stated in Section 5.1.9.

g)Allow unit to run several minutes after the charge pumps are “primed” with drive system in the full speed position. Check oil level as stated in Section 5.1.9.

h)Check hydro drive linkage adjustment as stated in Section 5.2.5.

5.1.12Check tire pressures. Service Interval: 40 hrs.

a)Stop engine, wait for all moving parts to stop, and remove key. Check air pressure in tires; recommended tire pressure is: rear, 12-14 psi; front casters, 15-17 psi.

b)Inflate tires to pressures stated above. Measure circumference of each drive tire. Adjust tire pressures within the above range to try to make tire circumferences match as closely as possible.

Note: Front caster tires have permanent tire sealant installed.

5.1.13Inspect Belt wear. Service Interval: 40 hrs.

a)Stop engine, wait for all moving parts to stop, and remove key.

b)Remove the three mower deck belt shields to check mower primary and secondary belt condition.

c)Look under engine deck to check the pump drive belt condition.

d)Check all idler arms to be sure they pivot freely.

5.1.14Lubrication

a)Stop engine, wait for all moving parts to stop, and remove key.

b)Lubricate fittings with one to two pumps of NGLI grade #2 multi-purpose gun grease.

Refer to the following chart for fitting locations and lubrication schedule.

LUBRICATION CHART

	FITTING	INITIAL	No. of	SERVICE
	LOCATIONS	PUMPS	PLACES	INTERVAL
1.	Caster Wheel Bearings	*0	2	*Yearly
2.	Caster Pivots	*0	2	*Yearly
3.	Idler Pivots (Mower Deck)	1	2	40 hours
4.	Idler Pivot (Pump Drive)	2	1	40 hours
5.	Hydro Control Arm Support Bushings	2	2	40 hours

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