What is the primary control for adjusting engine speed while using hydraulic functions?

The remote throttle switch serves as the primary control for adjusting engine speed while using hydraulic functions. This control allows the operator to regulate the engine's RPM (revolutions per minute), which is crucial for ensuring that the hydraulic system operates efficiently and effectively. Adjusting engine speed through this switch can optimize the performance of the hydraulic functions, providing necessary power when lifting or moving loads.

This control is particularly important because many hydraulic systems have specific speed and power requirements to function properly. By fine-tuning the engine speed via the remote throttle switch, operators can enhance responsiveness and ensure that they have enough hydraulic pressure to perform tasks safely and efficiently.