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MODEL 75 HYDRAULICS
With the engine shut down, make sure the hydraulic oil is clean and the tank is 7/8 full. Start the engine
to allow the hydraulic oil to warm up. Before checking or adjusting the hydraulic pressure settings, make
sure the engine is shut o and the ignition key is in your possession. Ensure the pressure gauge is installed
correctly to check the relief valve pressure.
1. Put the control bar in the o position.
2. Install pressure gauge on the test nipple that is
on the main relief.
3. Start engine with the control bar in the off
position.
4. Adjust engine to full throttle.
5. Close the ball valve.
6. Pressure gauge should read maximum specied
PSI (bar).
ONLY CLOSE BALL VALVE FOR 4-5 SECONDS
TO SET PRESSURE OR YOU MAY DAMAGE
HYDRAULICS.
MAINTAIN FEEDWHEEL HYDRAULIC PRESSURE AT SPECIFIED PSI (bar).
HYDRAULIC PRESSURE ADJUSTMENT
PRESSURE CHECK KIT
7. Locate the relief on the feedwheel control valve,
loosen jam nut, use an allen wrench to readjust
relief pressure setting if needed, and then
retighten jam nut.
8. Remove the pressure gauge and place the
rubber cap back on the test nipple.
9. Check for hydraulic leaks.
10. Relief valve pressure should be checked and
readjusted as needed once a month for best
performance.
SAFETY INSTRUCTIONS
OUT
IN
From Pump
Gauge
Ball Valve
Feedwheel
Control Valve
Hydraulic
Feedwheel Motor
Dump
Cartridge
To Tank
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