Blade Bolt Installation

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

e)Inspect blades and sharpen or replace as required.

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

g)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. (156-163 N-m). Be sure the spring disk washer cone is installed toward the bolt head. See Figure 6.

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. (156-163 N-m)

h)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 6

5.1.4Check safety interlock system. Service Interval: Daily

a)Check starting circuit. Starter should crank with: Operator Presence Control levers depressed, speed control lever in neutral, and PTO disengaged.

Try to start the engine with OPC levers disengaged, speed control lever in neutral and PTO disengaged - starter MUST NOT crank.

Try to start with, OPC levers depressed, speed control lever in any speed but neutral and PTO disengaged - starter MUST NOT crank.

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