Power Head removal 1972 Merc 110 9.8hp

[DOUGLAS FOLLETT]

Is it possible to remove the power head without removing the bottom pan? If so, what would be the best way to proceed?
I have disconnected the parts connected to the power head and would like to leave the pan and tiller handle etc. intact.

Thanks,

Doug Follett

[billw]

If it is a model with the composite top cowl, there should be one screw in the rear, under the spark plugs, roughly, that holds the pan onto the the drive shaft housing. All you should have to do is undo the six nuts holding the power head and the pan should stay in place. Temporarily leave the front two nuts on the studs loosely, and pry up on them, to break the gasket free.

Long live American manufacturing!

• This reply was modified 5 years, 3 months ago by billw.

[20mercman]

Bill is spot on. The powerhead adapter is the block that the powerhead is attached to, and the studs from the powerhead go through this to the drive shaft housing. The adapter is also held to the drive shaft housing by a single bolt below the spark plug. The lower pan is attached to the adapter by three rubber mounts, (These often are broken and are expensive to replace.) I have repaired them by welding studs to the bottom of these mounts and adding a rubber bushing.
The only thing you want to be aware of is if you don’t plan to remove the adapter, then be careful to not disturb the gasket between the adapter and the drive shaft housing. Also pay special attention to the plastic spacer on the water tube under the powerhead. I have found many of these that have melted and have severely restricted the water flow into the motor.

Steve

[DOUGLAS FOLLETT]

Thanks!!!
That’s the info I need. My Dad bought this motor new for us kids to use at the lake.
It was used and somewhat abused till the mid 80’s. It sat in a shed for awhile, then under my work bench.
It still has good spark and always ran good. Time to bring it back to life!

Sincerely,

Doug

[mercuryspecialist]

Hello,
To piggy-back on the provided good advice, the original part number white nylon water tube spacer would melt with an overheat, but the long ago superseded part number (which is tan colored fiber material) is very heat resistant and is a wise replacement even if not found melted (cheap insurance).

Regards,
Joe
(770) 597-5992

• This reply was modified 5 years, 3 months ago by mercuryspecialist.

[20mercman]

Great info Joe! I didn’t know of the change in the parts. I did notice they were different, but I didn’t deduct that they had improved the part.

Steve

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