#### SENDING UNIT REPLACEMENT

Fig. 1: Access plate location — Stanza

Fig. 2: Removing the electrical connection fuel gauge assembly

Fig. 3: Removing the lock-ring in the fuel tank assembly

Fig. 4: Replacing the O-ring in the fuel tank assembly

NOTE: Always replace O-rings and gas hose retaining clamps. Do not kink or twist any hose or fuel lines when they are installed. Do not tighten hose clamps excessively to avoid damaging hoses.

NOTE: Release the Fuel Pressure (EFI vehicles) — refer to all necessary service procedures and illustrations.

NOTE: When installing fuel check valve, be careful of its designated direction.

NOTE: The following procedure can be used on all years and models. Slight variations may occur due to extra connections, etc. but the basic procedure should cover all years and models.

1. Release the Fuel Pressure. Disconnect the negative battery cable.
2. On Stanza models, remove the rear seat cushion — remove the inspection cover. On later model 200SX vehicles the inspection cover or access plate must be removed — which is in the trunk area.
3. If vehicle has no inspection cover or access plate (1982–83 200SX and 240SX models) to fuel sending unit assembly the "Fuel Tank'' must be removed from the vehicle. Refer to the necessary service procedures in this section.
4. Disconnect fuel tank gauge harness connector and all fuel/vapor line connections.
5. Remove the lock plate and remove the fuel tank gauge unit — Refer to "Electric Fuel Pump In-Tank'' service procedures in this section.
6. Installation is the reverse of the removal procedure. When taking out fuel gauge/fuel pump assembly if so equipped be careful not to damage the assembly. Install a new O-ring in the fuel tank before installing lock ring and new gas hose clamps on all connections.