Exmark FMD 524, FMD 604 manual Blade Bolt Installation, Do Not Use Wrench Here

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

d)Block up using proper safety precautions.

e)Clean out any grass build-up from underside of deck and in deck discharge chute.

f)Inspect blades and sharpen or replace as required.

g)If blade removal is necessary, be careful for the sharp cutting edges of the blades.

h)Re-install the blades (if they were removed) by placing a block of wood between the front or rear baffles and the blade then torquing the blade bolts to 115-120 ft. lbs. Be sure the spring disk washer cone is installed toward the bolt head (See Figure 5).

CAUTION

POTENTIAL HAZARD

♦Operating a mower deck with loose or weakened blade bolts can be dangerous.

WHAT CAN HAPPEN

♦A loose or weakened blade bolt could allow a blade rotating at a high speed to come out from under the deck, causing serious injury or property damage.

HOW TO AVOID THE HAZARD

♦Replace the blade bolt after striking a foreign object. (Use only Exmark replacement parts PN 103-0862 – blade bolt and PN 103-0865 – spring disc washer).

♦DO NOT lubricate the threads of the bolt or spindle before assembly.

♦Torque the blade bolt to 115-120 ft. lbs.

i)Remove jack stands (or equivalent support) and lower deck to ground.

DO NOT USE WRENCH HERE.

FOR BLADE INSTALLATION MAINTAIN 140-145 ft-lbs. (190-197 N-m) ON THIS NUT

FIGURE 5

BLADE BOLT INSTALLATION

6.1.5Check safety interlock system: Service Interval: Daily

a)Check starting circuit. Starter should crank with operator in seat; parking brake engaged, and with PTO disengaged. Try to start with operator out of seat; parking brake engaged, and PTO disengaged; starter must not crank. Try to start with operator in seat, parking brake disengaged and PTO disengaged; starter must not crank. Try to start with operator in seat, parking brake engaged and PTO engaged; starter must not crank.

- 21 -