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'89 evo heads

1. Loosen the four cover bolts
2. Remove the two outer bolts if you manage
3. Pull cover sideways out/wriggle it out
NOTE: There is nothing in the way inside...
4. Remove oil pump shaft circlip (on the innermost gear)
5. Pull the gear off
NOTE: There is a key on the shaft that will come off/or you have to take off. At this stage, you could mark both gears to get it back the same way & aligned with the other gear. At least look closely if one edge is slightly chamfered or there is a mark on it (mine wasn't).
6. Loosen/pull out two top bolts
7. Pull the gear oil pump housing straight off.
NOTE 1: The shaft will stay with the engine as there is antoher circlip holding the drive gear - so don't push the shaft in.
NOTE 2: There is a key on the shaft also for the inside gear so when you pull off the pump you need to pay attention.
NOTE 3: Be careful when you do this so you don't gouge the soft aluminium housing & cover You can safely remove your oil pump from the engine if you follow these steps:s
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