Wright LG Stander Maintenance

Wright LG Stander MaintenanceDoes the steering on your large frame Wright Stander not feel right? Do you want to make sure the hydrostatic drive will last as long as the rest of the mower? These tips will help you keep your LG Series mower operating reliably and consistently.

Maintenance Schedule

Daily: Check the engine oil, air filter, blades, deck and tire pressure.
Every 100 hours: Clean the engine cooling fins.
Every 500 hours or annually: Replace the hydraulic oil and filter. Check the idler arms, spindles, caster pivots, wheel bearings, and belts for wear. Inspect the fuel hose, tank and tank grommets for signs of cracking. Make sure all electrical connections are solid and free from corrosion.

Check the included engine manual for powerplant maintenance.

Adjusting Neutral

If the mower moves forward or backward when the control levers are in the center position and the parking brake is off, adjust the Return-to-Neutral (RTN) setting on the pump linkage:

1. Lift the rear drive wheels off of the ground using a jack and jack stands.
2. Loosen the ¼ inch Allen bolt just above the base of the lever on the pump.
3. Rotate the linkage labeled “RTN” on the side with the wheel that turns when in neutral.
4. Tighten the Allen bolt.

Speed and Sensitivity Adjustment

The pump levers have two holes for connecting to the levers. Using the inner hole makes the controls faster while using the hole at the edge of the linkage decreases ground speed by 25-30% and allows finer movements.

1. Stop the engine.
2. Remove the bolts connecting the control rods to the pump levers.
3. Reconnect the levers using the alternate holes.
4. Check the tracking adjustment. (See below.)

Tracking Adjustment

To check the tracking:
1. Make sure both rear tires have the same air pressure.
2. Operate the mower on a level, paved surface at maximum speed. If the mower doesn’t stay straight, adjust the tracking.

To adjust the tracking:
1. Park the mower and shut off the engine.
2. Loosen the jam nuts on the steering rods where they connect to the hydraulic pumps.
3. Adjust the rod length. If the mower veers to the right, turn the right rod counter-clockwise or the left rod clockwise. If the mower veers to the left, turn the right rod clockwise or the left rod counter-clockwise.
4. Tighten the jam nuts.

Belt Adjustment and Replacement

1. Shut off the engine, remove the key and wait for the mower to come to a complete stop.
2. Remove the deck cover.
3. Insert a ½ inch ratchet and extension into the square hole in the idler arm. Turn the arm to relieve pressure on the belt. Slide the belt off of the pulleys.

If you are installing a new deck belt, follow the previous directions in reverse order. Continue if you’re replacing the drive belt.

4. Lift the mower onto jack stands.
5. Insert a ½ inch ratchet and extension into the square hole in the idler arm. Turn the arm to relieve pressure on the drive belt. Slide the belt off of the pulleys.
6. Follow the previous directions in reverse order to fit the new drive belt.

Bleeding Air from the Hydraulic System

If there is air in the system, your mower may lose power, and the pumps can overheat. Air may enter the hydraulic system if a hose is leaking, or a major component of the drive system was replaced.

1. Fill the reservoir with hydraulic fluid.
2. Lift the rear drive wheels off of the ground using a jack and jack stands.
3. Start the engine. Open the bypass valves, and slowly move the levers forward and back 5-6 times.
4. Close the bypass valves. Move the levers back and forth 5-6 times.
5. Repeat steps 3 and 4 until all air has been purged from the system.
6. Top up the fluid reservoir.


Use No. 2 lithium grease on the front casters. All other bearings are sealed.


The blades can be accessed by shutting off the engine, lifting the front of the mower and supporting it with jack stands. When installing the blades, torque the bolts to 70-80 ft-lbs.

Spring Platform Adjustment

The position of the platform changes the stiffness of the supporting suspension. Moving the platform rearward increases stiffness.

1. Loosen the three bolts on the center of the platform.
2. Slide the platform to the desired position.
3. Tighten the bolts with an impact wrench. These bolts will spin if you attempt to tighten them with hand tools.

When You Need Help with Your Stander, Go to Shank’s

Shank’s Lawn Equipment is more than a Wright dealer: we’ve been selling and servicing outdoor equipment since 1984, so we know these machines inside and out. If you need help with your machine, or you’re looking for a new mower, visit us at 4900 Molly Pitcher Highway in Chambersburg, PA. We also ship parts and accessories across the U.S. and Canada. To order, visit www.shankslawn.com.

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