Topic: 1963 Johnson QDL-24 10HP – Page 2 – Antique Outboard Motor Club,Inc

This topic has 31 replies, 9 voices, and was last updated 9 years, 6 months ago by steeleman.

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July 12, 2016 at 1:29 am #40040
frankr
Participant
Somebody in a prior life has swapped carburetors????
July 12, 2016 at 2:59 am #40055
david-bartlett
Participant
quote FrankR:

Somebody in a prior life has swapped carburetors????

If there is no "Flat" on the throttle shaft, I would agree.
July 12, 2016 at 9:38 am #40062
steeleman
Participant
Which may absolutely be. I picked the motor up at a garage sale for $50 bucks. Had about and inch of dust on it from sitting. New water pump and carb rebuild it’s at about 95% now.

If it is a different carb, it would have to be pretty close in year. Everything else is 100% 1963 about the carb
July 12, 2016 at 9:44 am #40063
steeleman
Participant
A quick look through the parts catalog tells me it has to be a 62 or 63 carb because the sediment bowl is not right under the carb, it is off to the side. And the choke assembly is different this years.

Still a mystery, but getting closer. Such is life
July 13, 2016 at 2:04 am #40085
retiredoz
Participant
This is the linkage off my ’62 Sportwin.

https://s6.postimg.org/58fzz8eo1/IMG_1175.jpg

Could somebody have found a reason to replace the throttle arm ??
July 13, 2016 at 1:12 pm #40105
lindy46
Participant
Maybe someone couldn’t figure out how to do a link and synch, and drilled out the hole in the arm to make it round?
July 15, 2016 at 1:11 am #40225
steeleman
Participant
Here, hope, is a picture. As I said, both the shaft and linkage are round. It does not start to even open by the time it hits indented line on the ignition advance. If I set it down to that point, so it opens more with less spark advance, it will not allow it to reach full RPM with the throttle open because the spark is not advanced far enough at that point.

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July 15, 2016 at 2:03 am #40227
2fast4me
Participant
Hello gentlemen,
I’m just getting in this post, I just checked my QD24,I’VE GOT TWO OF THEM. THE PICTURE SHOWS THE throttle closed.. if I advance the throttle to fast the arm will move toward the back of the motor and the butter fly in the carb is horizontal. My carbs are the same as your picture. Any help?
Jim

2Fast4Me
July 15, 2016 at 4:18 pm #40256
lindy46
Participant
Well, that pic looks to be close to where everything should be with the throttle closed (with pin in the throttle arm horizontal). Now, you must adjust the cam (the thing that the roller rides on). Loosen the two bolts on the underside of the cam and adjust so the throttle just starts to open when the roller hits the mark on the cam. If you can’t pull the cam out far enough to make this happen, then loosen the set screw and adjust the arm slightly to make it so. Then tighten everything up. Put the shift lever in forward and fully advance the throttle. (The throttle will only advance about half way in neutral). The roller should now be at the end of the cam and the pin in the throttle arm should be vertical (butterfly fully open). If the butterfly is not fully open after you’ve made the adjustments, then your roller is probably worn out.
July 15, 2016 at 4:29 pm #40258
fleetwin
Participant
US Member
That looks like a newer carb that someone has adapted for use on this engine….I don’t think that carbs of that vintage had the threaded boss for the carb butterfly roller….Will look at one of my sportwins….
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