Here is a pic of the plastic top of my carb. I’m only somewhat familiar with carbs, but I know this isn’t a good thing.
The motor does run iffy and unpredictably.
I pulled the top off and inspected the underside. Seemed OK, the crack doesn’t go all the way through. But there are a lot of little ports inside the housing and I fear that it’s allowing air to leak in (I may be totally wrong on this).
Unfortunately this is an “obsolete part” that I can’t find anywhere. Any thoughts?
Just to note, I haven’t done anything to repair this thing yet. I know the carb probably needs to be cleaned out thoroughly and I’ll be doing that in the coming weeks.
I have to order a new cam follower for the starter pulley assembly (it was broke when I bought it) and will order a carb rebuild kit. Tried to order this plastic dome but nobody has it.
I’m just trying to figure out at this point if this dome thing is shot, and just how screwed I am if I can’t get a replacement.
Epoxy!
Capt. Larry Teuton
Cracker Built Custom Boats
Small craft surveying and repair
What I thought.
I’ll goop it up next time I have it apart. We need to clean it anyhow, I’m taking it to a friend who knows a lot more of this stuff than I do. We’re going to soak the carb in some of his voodoo juice, and I’ll take that time to epoxy (JB?) the top. Probably happened a long time ago due to over tightening that long screw that holds the breather assembly on.
I am somewhat confused though, I don’t see an air filter on this. I suppose they assume the air to be cleaner on the water than other places?
What year is this motor?
Double D.
1986
Give these 2 guys a call they maybe able to help you out,they are located in Walterboro,843 844 8739 or 843 549 1234
Double D.
If you can’t find a replacement, Score the crack with a dremmel and then add epoxy. I would even scratch off to the side of the crack a little and let the epoxy flow over the scratched up area.
Just wanted to update.
I gooped on some plastic-weld epoxy. First I cleaned it thoroughly with some acetone, and scuffed it up with some 150g sandpaper.
The previous owner had apparently tried to adjust the carb because the air screw and idle set screw were WAAAAY off. Pulled the carb, rebuilt it with a kit (and found the pin that supports the float was completely off and just sitting in the bottom of the bowl).
Put it all back together today and replaced the broken cam follower and lever, but found out that I was missing the link (lol, missing link) from the cam follower to the throttle. So, I made a makeshift part that will have to do me.
Anyway I’m mainly updating just to say that covering the crack with epoxy seemed to work, I ran it for about 30 minutes in a barrel in gear at about 1/3 speed, seemed to run great after I got the air mix and idle set well.
Most of you will notice, real quick, what thing I used to make the makeshift link. Crude, but works.
http://s347.beta.photobucket.com/user/redfishsc/media/CAM00064_zpsdf591d30.mp4.html
That’s a pretty sharp idea! Pun intended.
'06 Mckee Craft
184 Marathon
DF140 Suzuki
Took the boat out today. The jigsaw blade work OK, lol, but will eventually need to be replaced with the appropriate link. It won’t give me WOT but it gets me to about 3/4 which is mostly fine. My boat won’t plane out anyhow with this little motor, so 3/4 throttle is probably going to give me all the speed I’m getting.
It doesn’t run as smoothly as it should. It doesn’t stall and can idle OK, but when running at 3/4 throttle you can hear the motor sound and rhythm go from rough and weaker to smooth and stronger, with no apparent thing changing.
I’ll upload a video in a little bit to show what I mean. I’m only getting about 5mph out of this motor on a 14’ semi-v hull (5mph upstream, 6mph downstream in the tailrace). I think hull speed on this boat, from what I’ve seen on Youtube (same boat, same size motor) runs around 8-12 mph, and this motor should get me at least 8-10 even if I’m not planing out.
For anyone that has any thoughts, here’s a video of the sound change. First, I’m just happy the motor cranks and runs almost right. Sure beats rowing a canoe all day.
Listen in this video (after I get my hand out of the motor) to how the sound changes. It’s very subtle in the video but quite pronounced in real life. It goes from a rough, sluggish “waaaaahhhh” to a smoother, stronger (faster speed) “oooooooooohhhhhh” as a good outboard should.
Tiller position is at wide open in this video even though I’m only getting 3/4 throttle out of it. IGNORE the part where I put my hand in and hit the throttle manually. I have a cheap DIY linkage on the throttle that needs to be replaced with the OEM and I was just showing how I can get a few more RPM out of the throttle because of my cheezy linkage.
In this video we are doing 5.5mph according to the GPS, going downstream. I really think I should be getting more like 8-9mph at 3/4 in this boat. It’s really light and we didn’t have much weight in the boat (maybe 325 pounds total counting me, son, anchors, gas etc).
http://s347.beta.photobucket.com/user/redfishsc/media/CAM00067_zpsca622bd3.mp4.html?sort=3&o=0
BTW, the carburetor was cleaned and rebuilt yesterday. Has all new gaskets, float, needle, etc. I adjusted it yesterday sitting it in a barrel of water and I fiddled with the air screw and idle adjustment, it seems to idle fine but when in sustained high throttle it acts up.