1. Set the vehicle on a lift.
2. Disconnect the ground cable from battery.
3. Remove the radiator. 
4. Lift up the vehicle.
5. Remove the bolt (B) securing the oil cooler pipe to the oil pump. (model with oil cooler)
6. Remove the oil cooler pipe (A) and hose (C). (model with oil cooler)
7. Lower the vehicle.
8. Remove the crankshaft position sensor.
9. Remove the water pump.
10. Remove the crank sprocket.
11. Remove the bolts which install oil pump onto cylinder block.
NOTE:
When disassembling and checking the oil pump, loosen the relief valve plug before removing the oil pump.
12. Remove the oil pump by using flat tip screwdriver.
CAUTION:
Be careful not to damage the mating surface of the cylinder block and oil pump.
13. Remove the front oil seal from the oil pump.