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I probably ought to be on the Tohatsu Forum, but I understand some Mercury models were made by Tohatsu.I'll be ordering my replacement parts from Boats.net.
I have a 1997 Tohatsu 3.5B HP two-stroke engine. After rebuilding the water pump, I proceeded to pump gear oil into the filler hole. I was unable to see any oil exiting the "Level" hole. At a certain point, the filler hose mounted on the pump popped off with a degree of pressure, and gear oil was everywhere.
I showed the lower unit to my marine mechanic, and he tried to dislodge whatever was blocking the "Level" hole with an air compressor. The air compressor kept backing out.
He suggested removing the lower pump case assembly, which I have done.
Part numbers reference is: 2002 And Earlier M3.5B Tohatsu Outboard GEAR CASE (DRIVE SHAFT) Diagram and Parts
The oil seal (#15, part number 3F0-60223-0/ OIL SEAL, 10 - 22 - 8) covers half the exit hole on the lower pump case that lines up with "level" hole on the lower gearbox housing.
Is this the correct position of the oil seal in the lower pump case housing?
I noticed that there was some water damage to the bearing (1-1,part number 9601-0-6000, BEARING, 6000).
Thought I would order new lower pump case assembly, new oil seal, pins, gaskets, and new #6000 bearing set.
Assuming the bearing set comes off the drive shaft on its lower end, I measured the distance from the bearing set to the lower end of the drive shaft, and measured diameter of drive shaft above the bearing set (.323") and diameter below the bearing set (.318").
I figured the "culprit" was the lower pump case, and thought I would just invest in new parts, but we're still scratching our heads for the solution.
Time is not on my side, I have to motor/sail my sailboat across the Neuse River & haul my sailboat out next Friday to paint bottom, and I would rather they lift the boat out of the water instead of off the trailer.
Any recommendations will be appreciated on my two predicaments, especially on removing the bearing set from the lower end of the driveshaft.
I have a 1997 Tohatsu 3.5B HP two-stroke engine. After rebuilding the water pump, I proceeded to pump gear oil into the filler hole. I was unable to see any oil exiting the "Level" hole. At a certain point, the filler hose mounted on the pump popped off with a degree of pressure, and gear oil was everywhere.
I showed the lower unit to my marine mechanic, and he tried to dislodge whatever was blocking the "Level" hole with an air compressor. The air compressor kept backing out.
He suggested removing the lower pump case assembly, which I have done.
Part numbers reference is: 2002 And Earlier M3.5B Tohatsu Outboard GEAR CASE (DRIVE SHAFT) Diagram and Parts
The oil seal (#15, part number 3F0-60223-0/ OIL SEAL, 10 - 22 - 8) covers half the exit hole on the lower pump case that lines up with "level" hole on the lower gearbox housing.
Is this the correct position of the oil seal in the lower pump case housing?
I noticed that there was some water damage to the bearing (1-1,part number 9601-0-6000, BEARING, 6000).
Thought I would order new lower pump case assembly, new oil seal, pins, gaskets, and new #6000 bearing set.
Assuming the bearing set comes off the drive shaft on its lower end, I measured the distance from the bearing set to the lower end of the drive shaft, and measured diameter of drive shaft above the bearing set (.323") and diameter below the bearing set (.318").
I figured the "culprit" was the lower pump case, and thought I would just invest in new parts, but we're still scratching our heads for the solution.
Time is not on my side, I have to motor/sail my sailboat across the Neuse River & haul my sailboat out next Friday to paint bottom, and I would rather they lift the boat out of the water instead of off the trailer.
Any recommendations will be appreciated on my two predicaments, especially on removing the bearing set from the lower end of the driveshaft.