Multiquip EM98121 Auto and Jog Switch

The Multiquip EM98121 Auto and Jog Switch is a genuine OEM component designed for the LS-series hydraulic-driven concrete pumps, including LS300, LS300G, LS300P, LS400, LS500, LS600, LS600P, LS40D, LS40TD, LS50TD, and LS60TD models. As a direct Multiquip OEM part, the EM98121 is built to the exact electrical specification of the original switch, ensuring correct operation of the pump's control system from day one. Sourced directly through authorized Multiquip supply channels, this switch is the correct replacement when the original component fails or shows signs of wear. Confirm your model code before ordering to ensure fitment accuracy.

Key Features

• Correct Electrical Specification — Engineered to the original switching characteristics for reliable control signal output in LS-series pump control circuits.
• Drop-In Replacement — Matches the original mounting configuration and wiring connections, allowing straightforward installation without panel modifications.
• Broad LS-Series Compatibility — Fits LS300, LS300G, LS300P, LS400, LS500, LS600, LS600P, LS40D, LS40TD, LS50TD, and LS60TD concrete pumps.
• Pump Cycle Control — Restores full Auto and Jog mode functionality, allowing operators to switch between continuous pumping cycles and manual pulse operation as the job demands.
• Genuine OEM Part — Manufactured to Multiquip's original design standards, eliminating the guesswork of sourcing an equivalent aftermarket control switch.

The Auto and Jog Switch on an LS-series concrete pump gives the operator direct control over how the pump cycles. In Auto mode, the pump runs continuous strokes to maintain steady concrete flow; in Jog mode, the operator can trigger individual pump strokes manually, which is useful for precise placement or when clearing a partial blockage. When this switch fails or becomes intermittent, the operator loses the ability to select or hold either operating mode, which can interrupt concrete placement mid-pour. Replacing the switch with the correct OEM part restores full control panel function and keeps the pump responding predictably under working conditions.

For fitment questions or to verify this part is correct for your machine, contact the DHS Equipment team before placing your order.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.