Home › Forum › Ask A Member › Johnson TN-28 impeller replacement – disassembly concerns › Re: Johnson TN-28 impeller replacement – disassembly concerns
1. Drain the oil out of the gearcase, or you will dump it on your feet later.
2. Disconnect the neutral cable at the neutral lever below the tank.
3. Remove the curved tube that the neutral cable comes out of.
4. Remove the 4 bolt holding the gearcase on.
5. Separate and remove the gearcase from the 1/4" plate above it. If the clutch didn’t come with it, pull it off.
6. You can now remove the 1/4" plate together with the drive shaft, water pump, shifter cable parts. Watch for seal parts that are at top end of drive shaft. They differ according to whether or not the update kit has been installed.
Don’t freak out about getting the shifter cable back in. It feeds up through a copper pipe. BUT Warning–if the top end of the cable is frayed (Step 2&3), don’t pull it out. You will have to use plan B.