help me please if possible

[herringdan]

I have a 1984 mariner 90hp 6 CYL inline I took off all three carbs to rebuild them but I'm old and retired and my mind isn't as sharp as it once was I can't figure out where the fuel lines and vacuum lines connect to I thought I had it but who ever had this boat broke off one of the vacuum nipples and I had to fix it but I could really like to take my wife of 35 years out on the river before one of us dies this is how long I've been on this boat first replaced the water pump and that was a job with on itself but I need this asap if any one of you could help me it would be a great help thanks and ride safe on the water there isn't anything more importation then your family GOD BLESS IF YOU COULD LIKE DRAW ME A DIRGRAM OF HOW THEY GO IT BE A BLESSING the manual don't show that much of it

 

[jimmbo]

 

[herringdan]

I miss wrote my need I don't know where any of the hose goes at all no fuel lines and are vacuum lines I bought it as is and the carbs was off I don't have a manual I'm going to buy one if I had a drawing on how they bolt up and the hose hooked to them it's a 1984 mariner 90 hp 6cyc it has three carbs on it I haven't a clue where they go it has on carbs 123 on top of carbs I don't know if it's from top or bottom thanks if someone would show me where to go for information I'll go find the help myself I'm not afraid of work but I've been looking for two weeks I can't find the motor at all the ser number is 6516594 is off the motor plate

 

[Chris1956]

The three carbs bolt to the block. Next to them on the block are 3/8" vacuum hoses. These are the balance hoses and connect to elbows in the block on the top and a tee in the middle, next to the carb bases.

There is a small (1/8"?) hose that connects to an elbow at the base of the powerhead, and runs to an elbow at the top of the powerhead. This recirculates oil from the lower main bearing to the upper main bearing,

The fuel pump has two vacuum hoses to the transfer cover. These can have springs inside to keep them from collapsing. The fuel line from the quick connect in the front of the motor runs to the top of the fuel pump. That fuel nipple connects to a black plastic cover housing the fuel screen. The nipple on the back of the fuel pump runs to the top carb bowl cover, which has a tee. The other side of the tee holds a hose that runs straight down to the mid carb float bowl. It too has a tee. The lower tee has a hose that runs to the lower carb, which has an elbow.

 

[herringdan]

The three carbs bolt to the block. Next to them on the block are 3/8" vacuum hoses. These are the balance hoses and connect to elbows in the block on the top and a tee in the middle, next to the carb bases.

There is a small (1/8"?) hose that connects to an elbow at the base of the powerhead, and runs to an elbow at the top of the powerhead. This recirculates oil from the lower main bearing to the upper main bearing,

The fuel pump has two vacuum hoses to the transfer cover. These can have springs inside to keep them from collapsing. The fuel line from the quick connect in the front of the motor runs to the top of the fuel pump. That fuel nipple connects to a black plastic cover housing the fuel screen. The nipple on the back of the fuel pump runs to the top carb bowl cover, which has a tee. The other side of the tee holds a hose that runs straight down to the mid carb float bowl. It too has a tee. The lower tee has a hose that runs to the lower carb, which has an elbow.

 

[Chris1956]

When you rebuild the carbs, it is wise to clean them and install new gaskets, inlet needle and seats and floats. Invert the carb covers and bend the carb float levers so the upper (on inverted carb cover) lever, is parallel to the carb cover. With the carb cover non-inverted, there should be 1/4" between the ends of the carb float levers. That is correct float height adjustment. Don't forget to remove the plug and clean the idle jet and it's passages into the carb throat, as well as the main jet in the base of the carb.

Floats always have small springs on their tops to close inlet needle. If these are missing, get new floats. Hard plastic floats can crack. Foam floats can dissolve in gasohol.

Also, under the brass elbows and tees on the carb covers there are usually fuel screens. These can clog, but do so rarely.