Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
PTO - Preset Mode (Factory Default Setting): Notes
The PTO preset mode is used for stationary applications. PTO will remain engaged while mobile in the preset mode however PTO Preset 1 and PTO Preset 2 speed controls will be inoperative. The engine RPM will also return to normal. This mode provides a default standby speed of 800 or 850 RPM depending on the engine and transmission combination. This mode also provides 2 default PTO control speeds: PTO Preset 1 of 1250 RPM and PTO Preset 2 of 1700 RPM. Please note that the standby speed is not to be used as a PTO control speed. Vehicles not equipped with cruise control will not have the resume speed capability.
| Programmable Parameters | Factory Setting (RPM) | Minimum Value (RPM) | Maximum Value (RPM) |
|---|---|---|---|
| PTO Max Engine Speed | 2200 | L18-2100 LB7-950 |
L18-4200 LB7-3100 |
| PTO Standby RPM | Auto/Manual L18-800/850 LB7-800/800 |
Normal engine idle will override if higher than requested PTO base idle | 1300 |
| PTO Preset 1 | 1250 | PTO Preset 1 cannot be set below PTO Standby speed | PTO Max Engine Speed |
| PTO Preset 2 | 1700 | PTO Preset 1 | PTO Max Engine Speed |
| PTO Max Engage Speed | 1000 | 950 | PTO Max Engine Speed |
| Present PTO State | Pressing | Resulting PTO State |
|---|---|---|
| DEFINITION: This chart shows how to toggle between the 2 PTO speeds through the SET and RES switches. | ||
| PTO Standby Speed | SET | PTO Preset 1 |
| PTO Standby Speed | RES | PTO Preset 2 |
| PTO Preset 1 | SET | PTO Standby Speed |
| PTO Preset 1 | RES | PTO Preset 2 |
| PTO Preset 2 | SET | PTO Preset 1 |
| PTO Preset 2 | RES | PTO Standby Speed |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.