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  1. ib18

    Rebuilding Mercury 90 hp 2 cycles 3 cyclinders (1987) - 100, 100, 75 psi

    Rebuilding Mercury 90 hp 2 cycles 3 cyclinders (1987) - 100, 100, 75 psi, third piston has low compression, motor cannot turn over, so tearing it down. Got stuck twice (1) could not get screws off - had to buy a deep wall wrench #10mm socket (2) had to buy a flywheel puller. mercury 90hp tear...
  2. ib18

    what is the oil hose size for a 1994 mercury 90 hp 2-cycle (oil inj) utboard motor?

    what is the oil hose size (inner diameter) for a 1994 mercury 90 hp 2-cycle (oil injected) outboard motor? My guess is 1/8" ID but unsure. This hose is for oil injection tank to motor instead of the gas fuel hose (typically 1/4" ID and 3/8" OD) from gas tank to motor. I see in another post...
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