Maintenance Instructions

REPLACING/REPAIRING ADJUSTMENTS

7.Install the new gearbox on the spline coupling of the drive shaft. Establish correct timing of the blade drive gearboxes by setting flats on the output shaft at 90 degrees when connecting the gearbox(es) to the spline coupling. Make sure the timing is correct before proceeding with as- sembly.

8.Reinstall the four (4) bolts mounting the gear- box to the connector tube but do not tighten them at this time; leave connector tube bolts fin- ger-tight.

9.Position the gear drive assembly on the deck and install the 3/8-16 bolts mounting the entire assembly. Leave the mount bolts finger-tight.

10.Torque all the connector tube bolts to 80 in-lb (9 N⋅m); then tighten the deck mount bolts.

NOTE: This fastener tightening sequence aligns the gearbox assembly with the deck hous- ing and eliminates the possibility of mounting the unitized assembly in a bind.

11.Fill gearbox assembly with oil. Refer to Mower Deck Gearbox Lubrication in this section for instructions.

12.Reassemble remaining items onto deck to com- plete installation. After installing blades, check that the blade timing is correct by moving the blades through one (1) complete revolution. Make sure blade tips pass clear of each other.

Mower Deck Gearboxes

(Shown with Gearbox Cover Removed for Clarity)

ADJUSTMENTS

DANGER

If the engine must be running to perform a maintenance adjustment, keep hands, feet, and clothing from moving parts. DO NOT wear jewelry or loose clothing.

Blade Clutch (PTO)

Clutch Disengagement/Brake Action

WARNING

It is important to check and maintain blade brake action for safe operation of the ma- chine.

The blade brake is activated by linkage to the clutch pulley mechanism. The brake is designed to stop the blades within five (5) seconds after disengaging the clutch.

Use the following procedure to check and adjust clutch disengagement and brake action:

1.Evenly adjust the nuts on the end of the brake band to achieve 1/4" of travel of the PTO gear- box assembly between the engaged and the disengaged position (refer to PTO Gearbox En- gagement Photo).

Assembly Should

Move 1/4" Between

Engaged and

Disengaged

Position

Brake Band

Adjustment Nuts

Located at Front

of Assembly

(Not Visible)

PTO Gearbox Engagement

(view from underside of tractor)

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