88 mercury 150 bleed line routing

[GOODMANMAKO]

New to the site, but seems like there's a lot of experience here. I have a 1988 mercury 150, number on the block is ob 349301. I'm in the process of rebuilding after a rod bearing destroyed a piston. I'm stuck at the bleed line routing. I cannot find any diagrams that match my manifold. Looking at the manifold from the boat, there is one line lower left side. There are 3 lines between carb 2 and 3. There are also 3 lines between carb 1 and 2. There are 3 fittings on the port side at cylinders 2,4 and 6. There are 2 fittings on the starboard side at cylinders 1and 5. Any help would be appreciated.

 

[GOODMANMAKO]

Re: 88 mercury 150 bleed line routing

Correction: 2 lines between carb 1and 2

 

[Dukedog]

Re: 88 mercury 150 bleed line routing

Go here............

mercury 150xr4 serial 0C200365 need bleed line routing 1988-1989

 

[GOODMANMAKO]

Re: 88 mercury 150 bleed line routing

Thank you dukedo, but that's not the configuration of my manifold. Freeze plug? Says ob 349301. From what I find on the net my motor is an 88, but cannot find any supporting diagrams. The bleed lines come out of ports around the carb plates on the manifold, not from the carb plates.

 

[Faztbullet]

Re: 88 mercury 150 bleed line routing

Here ya go....

 

[Dukedog]

Re: 88 mercury 150 bleed line routing

Thank you dukedo, but that's not the configuration of my manifold. Freeze plug? Says ob 349301. From what I find on the net my motor is an 88, but cannot find any supporting diagrams. The bleed lines come out of ports around the carb plates on the manifold, not from the carb plates.

Go down to Fb's post on that thread in my post and open tha pdf file. Its for tha vertical reed motor..............

 

[GOODMANMAKO]

Re: 88 mercury 150 bleed line routing

Dukedog: thank you for your help. That is exactly what I was looking for.

 

[Dukedog]

Re: 88 mercury 150 bleed line routing

Good. But ya need ta talk ta Fb 'bout havin' ta stand on your head ta read it :laugh: