Removing
1. On all engines except K7M, the switch is located next to the oil filter (refer to accompanying illustration). On the K7M engine, it is located on the left front of the cylinder block.
2. Engage the handbrake, then jack up the front of the vehicle and place it on axle stands.
3. Disconnect the electrical wiring from the switch.
4. Turn away the switch from the block of cylinders and remove a sealing washer (refer to accompanying illustration). Be prepared for oil to come out and plug the hole in the cylinder block if necessary.
Installation
1. Inspect the sealing washer for damage or contamination and replace if necessary.
2. Install switch with washer and tighten securely. Connect electrical wiring.
3. If necessary, bring the engine oil level to normal, as described in Section Schedule of ongoing maintenance.