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Re: What should the compression be on 2003 Tohatsu 9.8 2 stroke?
I have performed the test again with the motor warm and throttle opened all the way. The test was done twice, with and without one spark plug installed in each instance.
This time the cylinders were at an even 110 psi each.
The...
This is an '03 M9.8B.
I have a Seloc service manual that says compression for this year and model should be at 57 psi.
I believe this to be incorrect as both cylinders read 109 psi each, when using a compression gauge.
A tachometer is on my to-do list, but the motor runs great and it sounds like...
