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Thank you Don.

Thanks Don.
I found some used 150 HP carbs with the same part number, but without the accelerator pumps.

Here is a comparison:
Mercury 150 HP carb comparison:

0D050150 (1991) with accelerator...

Thanks Joe!

Is there a suitable carb replacement fir this engine that does not have the accelerator pumps? I'm concerned about getting parts in the future.

Hello,

Serial # 6627059

I have a question on the synchronization procedure in the mercury service manual for the: "Throttle Primary Pickup Adjustment". The procedure is:

THROTTLE PRIMARY...

Thanks all.
The oil injection system has been deleted.

Could it be the fuel pump?

Regarding the same motor on this thread Mercury 150 HP.
Serial number: 0D050150

I am having a couple of minor problems:

1. Extreme smoke at startup. Blue/grey almost white smoke. It seems...

Thanks for the guidance, sealed it up and torqued it down:

535599

535600

535601

535602

Thank you both!

I will check. The block in question was dropped by the previous owner, but I want to make sure I don't have to reseal the case again.

Also, found the bracket in case I need it.

I am not aware of this kit.
Can you provide details?

Ok, I've still got some from when i resealed my optimax.
Question: where do I put the red gel?

Should the gel bead be on the crankshaft side of the gasket/groove or on the opposite (outside) of...

I thought the anaerobic sealer was for 2 flat surfaces. This block design has a groove with a gasket. See pics. Note mating crankcase at the top right of pic with gasket in the groove.

1984 Mercury 35 HP
Serial #: 6627059

I had to split the crankcase due to a
cracked starter mount.

The front crankcase half has a groove for a thin gasket.
The rear crankcase half is flat.
...

Joe, I can find the part number 8129961 anywhere. You have a source?

What is the part number for the oil block off kit for:
1992 Mercury 40 HP (4 Cylinder)
Serial #: 0D106053?

Does the kit need to replace the volume of the gear in the crankcase to keep it from...

Just curious, how do you know it's a late 80's motor?

Wow! Thank you Joe.
Is this what they call an "FF" block?

Here are the freeze plugs:
Rebuilt?

527650

527651

I picked up a Mercury 175 HP (I think).
Serial #: 6305460
My research on the serial number seems to show its a 1980 or 1981 year model.

I bought the service manual to verify the jetting in the...

Changed the coil and the problem seems to have gone away. No change after replacing both switchboxes. My dang DVA is not working with my multimeter, so I had to swap parts from the other motor to...

1998 Mercury 200 HP V6
Serial #: 0G638250

I am experiencing tach issues (reading higher rpms than actual). As a result, I decided to test the rpm of each cylinder by using a timing light with an...

Good catch! I did the same thing you were doing on my 90 hp about 2 months ago. While your in there inspect the " ball check" in the manifold.

See my thread here:
...

Thanks Joe! Wish I could have scored a carb for spares..lol

Another issue I had was, the motor was not starting for more than 2-3 seconds andonly when I choked it or sprayed gas in the carb.
I verified compression at 120 psi on both cylinders, checked spark...

Had another issue, the plastic float pin stop broke.
The pin was working its was past the plastic pin holder and the float was dropping past the set point causing it to flood.
I'm used a longer...