Yard-Man 53AA1A3G401 Maintaining Your Z-Series, Lubrication, Engine, Control Tower, Mower Deck

Models: 53AA1A3G401

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SECTION 6: MAINTAINING YOUR Z-SERIES

Remove bolts that secure linkage to upper control handles and lower control arms. The shock absorbers should remain connected to linkage. See Figure 12.

Hex Bolt

Alignment

 

 

Holes

Jam Nuts

 

 

Alignaball

Hex Bolt

 

 

Jam Nuts

 

Alignaball

 

Alignment

 

Holes

Figure 12

Insert quarter inch by seven inch pin or equivalent through the top and bottom alignment holes of the control arms to secure arms at positive neutral.

With the shock absorber still bolted to linkage, loosen the jam nuts at both ends of the linkage so the alignaball adjustment can be made.

Adjust the alignaball until retaining bolts slips through alignaball and hole in arm with little effort.

Re-install bolts, washers, and nuts in all four ends of linkage. Tighten jam nuts against alignaball ends to keep ends from turning.

Lift rear wheels off ground using floor jack or other suitable lifting device.

With quarter inch by seven inch pins still installed in the top and bottom linkage arms, loosen the jam nuts at both the front and rear ends of linkage that runs from bottom linkage arms to hydrostatic pumps. See Figure 13.

Jam Nut

Spherical Rods

Figure 13

Set parking brake and start the engine (set throttle at full speed). Make sure that the PTO is OFF.

Rotate rods (lengthen or shorten) to bring each hydrostat to neutral.

NOTE: The control linkage going to the hydrostatic pump has left-handed threads at the pump and right- handed threads at the tower.

Tighten the jam nuts earlier loosened and reassembled the safety switches.

Remove quarter inch by seven inch pins from top and bottom holes.

Reassemble body panels and drive handle assembly.

Make sure that all hardware is tightened.

SECTION 6: MAINTAINING YOUR Z-SERIES

WARNING: Before performing any maintenance or repairs, stop the engine, disconnect the spark plug wire, and ground against the engine to prevent unintended starting.

Lubrication

Engine

Lubricate the engine with motor oil as instructed in the separate engine manual packed with your unit.

Control Tower

There are two grease fittings that are located on the right side of tower. Lubricate both with a grease gun at least once a season. The control tower cover must be removed to lubricate. See Figure 14.

Caster Assembly / Wheels

There are three grease fittings, one on each wheel spindle and one in middle of caster assembly. The caster wheels have one grease fitting on each wheel. Lubricate these with a grease gun at least once a season. See Figure 14.

Deck Lift Pivot / Lift Handle

The deck lift pivot assembly has grease fittings on each end and the lift handle has a grease fitting on its lower side. Lubricate with a grease gun at least once a season. See Figure 14.

Mower Deck

The mower deck may have grease fittings located on the idler assembly or the spindle assemblies.

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Yard-Man 53AA1A3G401 Maintaining Your Z-Series, Lubrication, Engine, Control Tower, Caster Assembly / Wheels, Mower Deck