Found bolt in 4.3 bilge. Please help identify

[nola mike]

Wishful thinking! I certainly hope not.

Edit: unless coupler bolt as mentioned elsewhere... For some reason I was/am thinking that the coupler bolt was sae even on the metric block.
I do believe there's an inspection port on the flywheel cover though.

 

[ShoalSurvivor]

check the coupler

Good news - all three coupler bolts are still in.
Better news! Found it! It was the 3rd bolt holding the power steering pump to the bracket.

WHEW!

As usually, thanks for your assistance!

 

[Mc Tool]

Good news - all three coupler bolts are still in.
Better news! Found it! It was the 3rd bolt holding the power steering pump to the bracket.

WHEW!

As usually, thanks for your assistance!

Pleased you found it , that sort of thing can nag at you bad enough to ruin time on the water

 

[Fun Times]

Good news - all three coupler bolts are still in.
Better news! Found it! It was the 3rd bolt holding the power steering pump to the bracket.

WHEW!

As usually, thanks for your assistance!

10-40001188

SCREW, (M10 x 20) (3 required per assembly) Mercury-Mercruiser 10-40001188 SCREW, (M10 x 20), Pump Mounting Brace has been superseded to a new part number 10-40001189 SCREW (M10 x 20).​

Just for a different matchup visual, Item number 6, https://www.marineengine.com/parts/...10044-thru-0m614999/power-steering-components

Genuine Mercury 10-40001188 Bolt

Boaters World is Australia's trusted direct to consumer marine parts supplier. Stock service parts for marine generator, diesel, petrol and outboard engines. All major brands Cummins, Volvo Penta, Yanmar, Onan, Kohler, Mercruiser, Mercury, Suzuki, Yamaha, Sherwood, SPX Johnson, Racor and many more.

boatersworld.com.au

 

[nola mike]

Pleased you found it , that sort of thing can nag at you bad enough to ruin time on the water

I've found enough hardware in my bilge over the years to dress a whole other motor. And enough tools to make it happen.

 

[Lou C]

Once in a while I explore the nether regions of my boat's bilge with the inspection camera and a magnetic pick up tool. I was surprised that I didn't find more stuff than I did! No tools and just a few washers and wingnuts.

 

[nola mike]

Once in a while I explore the nether regions of my boat's bilge with the inspection camera and a magnetic pick up tool. I was surprised that I didn't find more stuff than I did! No tools and just a few washers and wingnuts.

Your boat has apparently been running too well.

 

[DeepCMark58A]

I love it when the OP reports the outcome I appreciate it. I don't even have a mercruizer I just like reading along.

 

[Mc Tool]

I've found enough hardware in my bilge over the years to dress a whole other motor. And enough tools to make it happen.

Ha ha I guess you wouldnt need to be buying many fishing sinkers....just have a rummage round in your bilge for something

 

[Scott06]

Hey all,
I’ve got a 2000 Mercruiser repower engine with alpha one gen II drive.

i recently pulled engine, changed oil seals, and remounted drive.
She’s running better than ever!

however, today I found this bolt in the starboard aft area of the bilge. and i cannot figure out where it belongs. I thought it was the rear coupling cover but cannot see any missing.
any hints?

thanks!

View attachment 417234View attachment 417235View attachment 417236

That is a metric bolt Given the 9.8 marking On. 4.3 the 090M casting used m10 bolts for the starter, flywheel cover, and side motor mount holes. Based on the short length I would be thinking the side motor mount holes.
amazingly the rest of the bolt holes on the metric blocks are SAE …

 

[ShoalSurvivor]

That is a metric bolt Given the 9.8 marking On. 4.3 the 090M casting used m10 bolts for the starter, flywheel cover, and side motor mount holes. Based on the short length I would be thinking the side motor mount holes.
amazingly the rest of the bolt holes on the metric blocks are SAE …

already found it - it was the third bolt on the power steering pump. Thanks!