We have a yerf dog 3203 in great shape. Guy I got it from just put a whole new comet set on it. Good carb, runs good. I have an issue with it though that I was looking to get some help with. It has the 6.5hp tecumseh the issue is when u start it the clutch grabs right away. I did turn the idle way down to minimize this effect but want it rightly adjusted at the tq/clutch. Has blue spring in it and has 3 holes numbered 1, 2, and 3 and the spring is in hole 1.
have some questions about a yerf dog
- Thread starter willjr
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Is your idle not set a bit high. That will make the clutch grab
Poboy kartman
Senior Moments Member
Well then.....it's kinda like looking around work....and seeing someone missing.....
They aren't working and neither is your clutch.........
They aren't working and neither is your clutch.........
OzFab
Well-known member
That part is obvious, I think the question here is why
The first thing you need to do is get the engine to idle; for now, remove the belt & let's work on that problem...
The carb probably needs a good clean; remove it, take it apart (taking lots of pics along the way so you know how it goes back together) & clean everything; do your best to not damage anything (gaskets, rubbers, etc) otherwise, you'll need to source a rebuild kit (which is not a bad idea); use carb cleaner, compressed air & a thin length of bare wire to poke any crud out of the small channels inside the carb...
As for the TC, there may be an issue with the way it was set up but, we'll get to that later...
The first thing you need to do is get the engine to idle; for now, remove the belt & let's work on that problem...
The carb probably needs a good clean; remove it, take it apart (taking lots of pics along the way so you know how it goes back together) & clean everything; do your best to not damage anything (gaskets, rubbers, etc) otherwise, you'll need to source a rebuild kit (which is not a bad idea); use carb cleaner, compressed air & a thin length of bare wire to poke any crud out of the small channels inside the carb...
As for the TC, there may be an issue with the way it was set up but, we'll get to that later...
Great! You said it runs perfect though. I thought you said the engine couldn't idle. ???
OzFab
Well-known member
Trust me, it's a carb issue; for whatever reason, something is not doing what it's supposed to do...
The only thing I can make out from those pics is the belt on the TC appears to be a bit small...
The only thing I can make out from those pics is the belt on the TC appears to be a bit small...
It doesn't appear that carburetor has a choke. What you are actually referring to is the governor arm. (that thing covered in oil
)The post here will help you with the correct governor/throttle linkage:
http://www.diygokarts.com/vb/showpost.php?p=336354&postcount=21
Your definition of a low idle might be different from someone elses. But if you really have the engine idling low (e.g. < 2000 rpm) and the clutch still engages, then the problem must lie with the clutch (cvt/torque converter).
Fabroman mentioned that the belt might be too small, have you checked that the belt is the correct length? It looks like that torque converter uses an asymmetrical belt (one side of the driver pulley is at an angle) - it may be the wrong belt, or could possibly be installed the wrong way around.
It is the driver pulley (the part that sits directly on the engine shaft) that engages/disengages the belt. (not the driven - which is the side that the chain is connected on)
You need to check for a brass bushing on the driver pulley, I think you are suppose to have one there. The belt sits directly on top of that bushing during idle. You may need to take the belt off and make sure that this bushing is clean and moves freely.
Try propping up the go kart so the wheels move freely or disconnect the chain and (while it is idling) watch the driver pulley and see what its doing. Does it expand out toward the belt and grab it?
If you have made sure that the belt is the correct one and the bushing etc is clean, then you should disassemble the driver pulley and inspect the springs to make sure they are properly installed and not worn or stretched out. You will want to take some pictures of that and post them here if you make it to this point.
Poboy kartman
Senior Moments Member
JEEZE.....See why we like pics?????? You don't even have a clue....err....clutch. ....sorry....typo....
OzFab
Well-known member
Quite honestly, I don't care; there's nothing I despise more than someone who doesn't know what they're doing asking for advice, then telling the people he's asking that they're wrong; if you don't know, how the he11 can you know that we're all wrong? If you do know, why are you asking?
Sorry to upset you fabroman. I knew the issue wasn't with my carb and the whole comet setup and belt are brand new as in haven't been rode on until 2 days ago and probably needs adjusted. The clutch is a little grabby yet but I can't seem to get help with adjusting it. To fix the whole idling issue I had to hook a spring from the governor arm to the throttle. I just turned the idle way down so the tq doesn't grab as bad or at least works right. Would like to get that working better though. How do I dial back the tq or clutch. No need to be condescending either. I'm in a wheelchair and doing the best I can to get this perfectly running for my kids. Just need to do the adjusting to the clutch/tq. Thanks in advance for the help
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