Force 125 - Heavy Mid Range Shake & Shudder

[Water4Life]

New to the forum, hello all!

I just picked up an '88 Bayliner [see details below] with a 125 Force. Everything is in great shape - it was sold to me cheap because the seller's mechanic told him the motor needed a $500 part to maybe fix it......

[cdog580]

ok so i recently bought a boat with a 1988 or 89 force 50hp motor. first time we took it out it died after a solid 20 min of running no problem and got towed in. second time had it going for a while and then later in the day had a hard time getting it...

[c6whites]

I'm new to the forum and have limited mechanical skills. Have a new-to-me 1989 Bayliner Cobra with Force 125HP that appears original/standard. I had a marine shop go through the engine for tune-up, etc and they told me the T&T has a leak and is...

[jholma]

I have no start condition on this motor. When i pump up the primer bulb, it fills the crankcase and cylinders with fuel.
I have had the carb off, and it isn't going through it. It does fill the bowl. Eventually it pours out the exhaust. Will a...

[johsonbert]

Hi everyone!

So after reading the how and what to do regarding my new toy, I took the lower unit off to see how the impeller looked. Note for future projects: follow all instructions here to remove lower...

[Mr. PapaGeorgio]

Howdy, Y'all! I have a 1987 Force 50 which has not given me trouble in the two seasons I've been running it. In firing it up this spring, though, I have no water coming out of the upper unit when it runs. I have tried the leaky muffs on the lower...

[force probelms]

I have a 75hp force n I don't know the year, but the lower unit went out and I was in need of help finding a good used one. does anyone know where I could find one? thanks

[Haterasman]

I have a 1992 Force 120 hp outboard. Motor starts up and runs fine. My problem is the motor will tilt up great but won't always power down. Play with it for awhile and it will eventually go down. Took relay apart and cleaned terminals, no go. Doesn't...

[slx12001]

New to me engine idles about 800 rpm pumping good water. If i throttle up it will start to pop like lean and sometimes stall. It will always start right back and idle well. When i got the engine idle Was set to about 950 rpm. Now with idle set to 800...

[adamjoelmusic]

hey there guys! first off... thanks for all the help so far on this forum! you guys have been a real super help - i am fairly mechanical and can do just about anything i am told mechanically but this outboard is new for me and I'm slightly lost on the...

[adamjoelmusic]

hey guys! can anyone in here give me some information on reinstalling the GEAR SHIFT ARM (SHIFT FORKS) in the lower unit of a 1988 125hp force motor? this is a motor i had never worked on and i accidentally removed the clutch pin (or pivot pin) while...

[maytheforce125bewithyou]

I recently bought a used lower unit for my '88 force 125. It turns out I needed a long shaft instead of a short shaft. I know that they make conversion kits, but have been unable to find the stub shaft for my engine. Does anyone know if there are...

[Petesafloat]

I have a 1987 35 hp Force outboard. Leaking oil from lower unit water intake and small amount of water in gear case oil. Figure I will drop lower unit and pressure test for leaking seals (replace impeller same time). Looking at Clymer Force manual...

[swamp indian]

I'm having some overheating issues. Pulled the thrmostat and found it stuck open but not all the way open. So my question is does the 1997 force 50 have a poppet valve if so where is it located? Can not seem to find it on the parts list.

[acdc96]

My 1991 Force 9.9HP outboard is due for a water pump impeller change out.
I have never changed it myself. I'm the second owner. Bought it from my cousin about 4 years ago. The thing is in pristine condition. clean and works perfectly. He told...

[acalabro]

I sent a trigger in for warranty for my 50hp '90 force and I received it. Upon installing it, putting stator on, screwing in 4 stator bolts to a tad more than finger-tight, and then tightening flywheel down to spec (80ft/lbs). I cannot move the throttle...

[rolltider1989]

Hello I have a 1998 50 hp force by mercury marine and I just replaced the water pump and took it too the lake and it's just spitting water out the back it's not a steady steam or flow is this normal?

[crappie14]

Four wires are found under the dash, Red, Orange, Purple, Black.
Red - 12 Volt Power When Key is on
Orange - ASSUMING Heat Alarm based on reading posting forum
Purple - ASSUMING Tach
Black - ASSUMING Ground

...

[rellish]

My buddy has a 15hp force that we don't know the year of, we are guessing pretty old. It wasn't pumping water and was overheating so we replaced the impeller no problem. When we went to put the lower unit back on we could not get it to shift to neutral...

[acalabro]

So a few months back, I had no spark on #2 cyl & eventually brought it to a mechanic for diagnosis. He told me the trigger was bad because dva was 0.2 on trigger instead of the required 0.3+. I took my boat back from him and replaced the trigger...

[acdc96]

I have to replace my sparkplugs on my 1991 Force 9.9. The top one is easy to take out but the bottom one I can't get out. It's not stuck its just the lower cowling is in the way. I need to service the carb also but it's such a tight spot I don't want...

[agentxman]

I have a 1988 9.9 gamefisher 225.581990 model. I replaced the coils and adjusted the points. I rebuilt the carburetor and got fresh non ethanol gas. I made sure I was getting spark on both plugs and wires. I have tried to get it started and nothing....

[Grasshopper187]

I have 1993 Sea Rayder F14 with a 90 hp Mercury Sport Jet engine. Everything runs well except for an oil leak at the bottom of the engine under the oil injection pump. I carefully installed a brand new pump and o-ring and the inlet and outlet hoses...

[acdc96]

I want to know how fast you have gone in your boat? Knots or MPH...
On a calm day,
Here's mine...
21ft Cuddy with a 260hp V8: 55-60 mph
14ft Jon boat with a force 9.9hp: 20mph

[acdc96]

I want to convert my 1991 force 9.9hp to a 15hp outboard. i know they use the same cowlings and lower unit. also, alot of the same engine parts.

what would i need or need to do to convert it?