Are you having trouble getting your Wright Stander Intensity mower to track straight? Is it not leaving the finish you want when you cut grass? Here’s what you need to know to adjust the hydraulic motors and deck to get your ZTR mowing like it should.
When parked on a flat surface, the mower should not move when the parking brake is off, the engine is at full throttle and the levers are untouched. If it does, do the following:
1. Lift the rear of the mower onto jack stands so that the drive wheels are off of the ground.
2. Look at the side that is moving when in neutral. Follow the handle down to the hydraulic pump. Loosen the ¼ inch Allen bolt directly below the spring.
3. Start the engine. Rotate the “RTN” knob behind the Allen bolt until the wheel stops spinning.
4. Shut off the engine. Tighten down the Allen bolt.
1. Check the tire pressure for both rear tires. They need to be equal.
2. Drive the mower across a level surface at full throttle with both control levers pushed forward all the way. The mower should stay straight.
1. Park the mower and shut off the engine.
2. Loosen the jam nuts on the rods that connect to the hydraulic pumps.
3. Turning the rod adjusts how far it opens the valve on the hydraulic pump. If the mower turns to the side you’re working on with the levers fully engaged, spin the rod counter-clockwise to lengthen it and open the valve more. If the mower turns in the opposite direction, turn the rod clockwise to close the valve.
4. Tighten the jam nuts. Check the tracking again and repeat the previous steps if the mower is still not tracking straight.
Getting Maximum Ground Speed
The valves on the hydraulic pumps need to open fully to reach the mower’s maximum speed.
1. Park the mower and shut off the engine.
2. Loosen the jam nut on the rods that connect to the hydraulic pumps.
3. Rotate each rod counter-clockwise one turn and push the control lever forward. Repeat until pushing the control lever forces the rod into the internal pump stop.
4. Rotate each rod clockwise one turn. Tighten the jam nut.
After making this adjustment, check the mower tracking.
Moving the Stander Intensity When it Won’t Start
Open the hydraulic bypass valves by turning the levers next to the pump inlet hoses counter-clockwise two turns. This disengages the drive system, making the mower easy to push.
Addressing PTO Problems
1. Shut off the engine, remove the key and let the mower cool off. Check the belt and the wiring to the PTO clutch.
2. Disconnect the clutch wire and turn on the blade switch. Check for power from the harness. The blue wire that goes to the red clutch wire sends power from the PTO switch, while the black and orange wire is the ground. If there is no voltage, check the relay, operator presence switch, and PTO switch.
3. If there is power going through the wires, check the clutch. Replace the clutch if there’s a large gap between the plates. Sometimes, a worn clutch will work when cold, but as it heats up, resistance increases, preventing the magnetic coil from engaging the mechanism.
4. If the clutch looks OK, check the resistance on the clutch wiring. It should be around 1.84 ohms. Lower resistance indicates a shorted coil, while a high or infinite reading is caused by an open or burnt out coil. Either way, the coil needs to be replaced.
Deck Pitch and Side-to-Side Adjustment
For the best performance, the front of the deck should be ¼ inch lower than the rear, and the deck should be level from side to side.
1. Park the mower on a flat surface. Check the tire pressure, making sure both tires are equal.
2. Set the deck pin and lower the deck to a cutting height of inches.
3. Measure the front and rear of the blade tips. The front should be three inches from the ground, and the rear 3 1/8 to 3 1/4” inches from the ground.
4. To adjust the height, loosen the deck lift bracket nuts, then use a ½ inch ratchet and extension to raise or lower the lift arm. Tighten the nuts to 45 ft-lbs.
5. Remeasure the blade tips and readjust the height as needed.
Need Help with Your Wright Mower?
Shank’s Lawn Equipment is an authorized dealer for Wright Manufacturing, which means we don’t just sell these mowers, we also able to offer the parts and service you need to keep your stander running. Visit our shop at 4900 Molly Pitcher Highway, Chambersburg, PA.
We also ship OEM parts for Wright and many other brands of lawn care equipment across the U.S. and Canada. If you need something for your mower, visit us online at www.shankslawn.com.