Throttle cable maintenance and adjust basics? Force 85 H.P. or other..

FingerLaker

Seaman Apprentice
Joined
Oct 31, 2018
Messages
35
Hello, all, and Happy Spring, most of you are likely in the water already...

Thanks again for all the help on my easy issue last year with my '87 Force 85 HP, a basic idle adjust using the idle screw took me through the whole season with no stalling at shift. At the end of the season, it did it on the last outing for a bit (idled a bit too low) but the water and temp was much colder, so I think spring adjustment should clear all up again for the year.

However, in the fall, we also became aware that it doesn't seem we are getting full power, being pretty happy with the way this motor kicks the Bayliner right up onto a nice plane even on the choppy Potomac and its bays. Checking the opening just from the tower, we appear to be not even getting 70-80 percent of fully open throttle plate! Though, this is a guess, since I can't see the plates with this motor's curved air scoop. The control arm is not quite all the way to the horizon (-10 deg. or so) when its seems stiff and at the end; we don't force it. So, I think we may be either 1) finally getting a bit of a throttle cable stiffness or need for lubrication or adjustment (likely the actual cause of the idle stray); or 2) out of adjustment at the tower shaft; For starters, I would love to know where to learn more about lubricating the cable and if any maintenance at the helm should be conducted. I am wary of removing the assembly, as I have no desire to fiddle with things if they aren't the problem. The Clymer doesnt really suggest any particular lube points for cables, other than key points in the power area. So, any recommendations for maintenance/sources of info for the throttle cable itself, and the control, and what should really constitute regular maintenance, would be appreciated...

Back to the carbs: after consulting the Clymer, it has two separate sections on adjustment of the throttle cam (primarily for idle to lower range speeds, I take it) and then the section on the wide-open throttle linkage adjust. Doesn't it make sense to do the latter first, and then move back to do the cam as more of a fine-tune? The adjustment of the link rod is likely going to have a big impact on overall throttle adjustment, no? So, this seems sensible, but it doesn't actually say to do it in that order. I'm sure you Force-ers are doing this in your sleep by now for your motors, maybe every year, but I'm only going into my third year with this raft and we didn't know we could expect more out of this engine. Any guidance and suggestions you may have is truly appreciated! Happy 2021!

Finger-Laker
'87 Bayliner Capri/85 H.P. Force on the Big Muddy Potomac
'89 Maxum 1900SR/Mercruiser 3.0 on Cayuga's Shining Waters (NY)
 

Nordin

Lieutenant Commander
Joined
Jun 12, 2010
Messages
1,965
There are four adjustments for the carbs from the outside.
1. Throttle pick up point adjustment.
2. Throttle butterfly opening.
3, Idle screw setting.
4. Air/fuel mixture setting.
When setting the carb you first start with the throttle pick up point adjustment and then the throttle butterfly opening.
The number 3 and 4 are the fine tuning part.
There are a sticker in the top of this forum how to do this settings.
It was made by the Chrysler/Force guru Frank A who is not with us any more.

Check this sticker (there is a video at Youtube) showing how to set these four adjustments.
Important is to set the timing at WOT at 28 dgr at cranking speed.
From this you set the rest. If the timing at WOT is way off then the carb setting will be wrong too.
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,352
Usually adjustments aren't needed unless someone tinkers or "adjusts" something.
The cables: unless the ends are exposed to the weather then they don't
need lube. The ends or connectors,, you can lube with a couple drops of oil.
Silicone sprays end up getting sticky and can clog.
If you lube them they will clog up and get harder to use.
They usually last 15-20+ years.
Nordin mentioned FrankA, he did video's on the Chryslers and Forces. One good one was a Link and sync for the fuel system.

One way to check the linkage/butterflies is to remove the plenum or unhook
the linkage and advance it by hand and see if it advances further unhooked??
 

FingerLaker

Seaman Apprentice
Joined
Oct 31, 2018
Messages
35
Thanks so much to both of you, and glad to hear that you're both well! I will check out the videos, I thought there must be some older string about this, but too new to know how to find things in the forum well. I seem close then, last year I did 1 and 2 only (cam pickup and idle screw), so I'll do them all this year in that order.
Yes, Jerry, thanks, that's how I am 'guessing' that I am not getting more than 70%, as without even unlinking, I can push any one of the three armatures on the carb-to-tower cam and push them all open quite a bit further.
Thanks again to both of you, happy boating!
 
Joined
May 11, 2022
Messages
2
There are four adjustments for the carbs from the outside.
1. Throttle pick up point adjustment.
2. Throttle butterfly opening.
3, Idle screw setting.
4. Air/fuel mixture setting.
When setting the carb you first start with the throttle pick up point adjustment and then the throttle butterfly opening.
The number 3 and 4 are the fine tuning part.
There are a sticker in the top of this forum how to do this settings.
It was made by the Chrysler/Force guru Frank A who is not with us any more.

Check this sticker (there is a video at Youtube) showing how to set these four adjustments.
Important is to set the timing at WOT at 28 dgr at cranking speed.
From this you set the rest. If the timing at WOT is way off then the carb setting will be wrong too.
Hello Nordin. I was trying to access the sticker and the youtube video you spoke of. We can't seem to find the area where it is located. I am trying to adjust my throttle cable for my 1990 90 hp force motor. The cable had felt a little sloppy at the controls, and now it wont rev all the way. Thought I would review the information and the video.
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,352
The first 4 posts in this forum have tips and procedures for the Force motors.
Some of the links don't open but the next one might?
U=tube videos by FrankA look them up.
Franks was pretty good at his repairs and video's but some of them don't open.
 

Nordin

Lieutenant Commander
Joined
Jun 12, 2010
Messages
1,965
You find the Youtube video by searching (google) "carb and timing tutorial".
You find more good information at the sticker in top of this site.

Force & Chrysler FAQ and other great information​

 
Joined
May 11, 2022
Messages
2
You find the Youtube video by searching (google) "carb and timing tutorial".
You find more good information at the sticker in top of this site.

Force & Chrysler FAQ and other great information​

Thanks Nordin, can you please advise what the "sticker" is. We have been looking and cannot find it.
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,352
Sticker= stickeys
the first 4-5 post in the Force frum are stickers or stickeys
Read them ALL!!!
 
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