1991 Force 150HP Sitting All Winter... Help!

[N211DW]

Hey guys,

I just joined this forum and recently purchased my first boat bigger than a duck boat. It is a 1991 Bayliner Capri. I live in North Dakota and so did the seller. He has videos of the boat in the water running last summer and then he let it sit outside all winter.

Before I purchased the boat he turned the starter so I know the engine is not seized up or anything. My question is where should I start? Should I start with replacing plugs, cleaning the carbs, and then just go from there.

Also, does anyone have any good info on specifications for this engine? Example, the correct oil to fuel ratio?

Thanks all in advance!

Tyler

 

[The Force power]

Welcome,

Pull all the plugs & check the compression/spark on all 5 Cylinders
Run some Carb-cleaner through the carbs.
Pull the Lower-unit check/replace Impeller, drain oil from lower unit-check if milky!

50:1 Fuel ratio

keep us posted

 

[jerryjerry05]

The top 3-4 posts have a bunch of info you need to read.

The fuel mix on almost any outboard (except some real small ones) is 50-1 or 1 pint to 6 gal.
Make sure the oil's TCW-3

The first thing is do a compression test.
Try not to use the key to turn the motor over.
Then check for spark?
Lots of times the safety lanyard won't connect and it kills the spark.

How are your mechanic'n skills?
outboardignitiondotcom has test procedures for outboard ignitions if you can't get spark.

 

[N211DW]

Thanks for the replies.

Ive always done most of the maintenance on my airplane but those engines are super easy to work on. I do not have much experience with 2 stoke engines. The 2 stroke I had on my duck boat was a reason why I sold it lol.

That being said, a lot of my tools are for aircraft, like my compression tester will not work on this boat engine. What compression tester do you guys recommend? And what is the easiest way to check for spark with out turning the starter? Manually spinning the fly wheel? And if its like and airplane, Im guessing you have to somehow ground the plug to test it otherwise it won't spark?

Thanks again in advance if answering some of the stupid questions. Very new to owning a boat motor this big lol

 

[N211DW]

Steering is also stiff and I was planning to push new grease through every zerk I can find... haha.

What grease do you guys recommend I buy?

 

[The Force power]

Any "decent" automotive compression-tester will do
Remove plug from block & re-connect, crank motor over with starter & fully charged battery - check for spark
Any Marine Grease will do

 

[jerryjerry05]

GREASING!!!
Be careful as the zerks are just pressed in and will pop out if your not careful.
The grease has been in there a LONG time and probably turned hard.
Adding more grease can possibly push the zerks out.
Get a propane torch and heat the mid section, get it hot around the zerks then try adding.
Be careful not to much heat at the top and bottom.
There are bushing in there that can melt and seize the kingpin.

Doing a comp test while using the key, you can blow the packs if the plug wires aren't grounded.
I made a tool, I call it my octopus.
I tied 4 #10 wires together and put them in a battery cable end.
Made the wires long enough to reach all the plug wires.
The I plug each wire into the end of the plug wires, then ground the other end.
Then you can use the key.

 

[QBhoy]

I’m not going to be of any use here. Not an engine I’m familiar with at all...only just found out there was such a thing. I think the largest that made it here was a 120. So does this have 5 cylinders as mentioned ? Where did that block come from ? Presuming in line ?

 

[roscoe]

yes 5 cylinder, just like the 120 - plus one, and has 3 carbs.

Can be a pain to tune.
If kept tuned, works well.
If not, well, they don't last.
Really nice power to weight boost versus the 120.

 

[jerryjerry05]

Made from 89-94 they just put another cyl. on the 120.
Added a center/smaller carb and a second fuel pump and a third power pack.

When introduced they were touted to have the "best power to weight ratio" of any outboard.

They run good just keep the recirculation system clean/clear.

 

[N211DW]

Thanks for all the great info guys. With it being so cold, I am going to wait a few more weeks before I get too far into the engine. However, I got my old carpet ripped up and found some mold. I'm still finishing up college and don't have all the tools I used to lol so Im not going to be able to rip all the old ply wood out. I plan to just repair the bad spots and lay new carpet. I will post pictures soon.

Has anyone tired these seats? I took mine out that are in awful shape. I found these, I see they have a plastic base which I do not plan to use.

​​​​​​https://www.walmart.com/ip/Wise-8WD...NxXUsHD9ziGlD8GruuFeH0LnN2LKYSwoaAtBoEALw_wcB

 

[N211DW]

Also, another really dumb question. The previous owner has 2 12v batteries tied together and the way it is all rigged I'm guessing this would be a 24v system? As a kid my father has a 200hp 4 stoke (Yamaha I believe) and I was darn certain it only had one battery.

I didnt want to start taking the batteries out to charge until I had a little more knowledge on the electrical system. Lots of random sh*t wired into this "Battery System" like 2 depth finders and the radio. I want to take all that crap out and pretty much just get power to the engine, get it all tuned up, then worry about all the accessories.

Thanks again guys

 

[The Force power]

Also, another really dumb question. The previous owner has 2 12v batteries tied together and the way it is all rigged I'm guessing this would be a 24v system? As a kid my father has a 200hp 4 stoke (Yamaha I believe) and I was darn certain it only had one battery.

It depends on how the 2 12 volt batteries are "tied together", if they are hooked in series- it will be 24 volts (one +post from batt. to - post from other batt.)
but if they run parallel it will still be 12 volts

 

[jerryjerry05]

Pics of the batteries?

I was looking at a used boat and the guy had the twin batteries hooked in a series.
I was surprised the starter didn't burn up.
Turns out the lower unit had a bearing that was seizing and it needed the 2 batteries 24V to turn the
motor over.

Something to think about.

The plastic base on the seats: I wish the old 15ft. I had had the plastic bases.
The wood rotted away and I had to replace.

 

[The Force power]

The other possibility.... the Batteries are 6 volts and that is the reason they would be hooked up in series