So I don't see a lot of customers in my marina job anymore, because I tear apart motors for a living. But I had to share why this motor arrived at my desk.
Background: There are two states of tear-down:
partial: I take all electronics off, the starter, and the flywheel. Then I take the powerhead and lower unit off, and that's it, it's done.
Full: I tear apart everything including the powerhead.
Full teardowns only happen if something went horribly wrong with the motor. The compression is bad, or in one case, there was literally a hole in the powerhead.
To tell if compression is good on a multi-cylinder motor, they have to be within 10% of each-other on each cylinder.
We write on the motor itself with permanent marker on the cylinder, so we know exactly what the compression is.
(Don't worry if that doesn't make sense to you, it wouldn'tve to me a few months ago.)
Story: So I start tearing down this motor, being careful, because I can tell, according to the 120/120 compression, that it's a partial. Then my boss walks by.
B: Just so you know, you're tearing down the powerhead too.
Me: But the compression is perfect.
B: That was before he didn't put premixed (gas with oil) in it for a whole summer. Now the bottom cylinder is blown.
The only way he could have managed that is if he didn't go to a marina for his gas, and instead went to the gas station for cars. And the only reason he'd do that is because on face value, it's cheaper.
But buying a whole new motor? That ain't cheap. It WOULD have been cheaper to go to a marina for your gas. (It didn't even have to be us.)
Background: There are two states of tear-down:
partial: I take all electronics off, the starter, and the flywheel. Then I take the powerhead and lower unit off, and that's it, it's done.
Full: I tear apart everything including the powerhead.
Full teardowns only happen if something went horribly wrong with the motor. The compression is bad, or in one case, there was literally a hole in the powerhead.
To tell if compression is good on a multi-cylinder motor, they have to be within 10% of each-other on each cylinder.
We write on the motor itself with permanent marker on the cylinder, so we know exactly what the compression is.
(Don't worry if that doesn't make sense to you, it wouldn'tve to me a few months ago.)
Story: So I start tearing down this motor, being careful, because I can tell, according to the 120/120 compression, that it's a partial. Then my boss walks by.
B: Just so you know, you're tearing down the powerhead too.
Me: But the compression is perfect.
B: That was before he didn't put premixed (gas with oil) in it for a whole summer. Now the bottom cylinder is blown.
The only way he could have managed that is if he didn't go to a marina for his gas, and instead went to the gas station for cars. And the only reason he'd do that is because on face value, it's cheaper.
But buying a whole new motor? That ain't cheap. It WOULD have been cheaper to go to a marina for your gas. (It didn't even have to be us.)
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