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Old 12-14-2018, 08:44 AM
Leelee91 Leelee91 is offline
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Default Manco 486 go kart

I have a manco 486 go kart, I have an atv company look at my go kart to tell me why it would accelerate once engine was placed on it.they told me I needed a torque converter. I bought a 6.5 hp predator torque converter but when I attached to engine. The chain does not line up with the sprocket even if I shift the engine. If I need another kind of torque converter what should I purchase. I attached photos to show what I am talking about.
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Old 12-14-2018, 03:42 PM
J.S.@SMS J.S.@SMS is offline
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How can I break this to you lightly? That's not a 486. A 486 doesn't have those three bars below the engine. That's more like a 435. And what solved a similar problem on my 435 was reversing the sprocket and drum assembly. That should allow for proper alignment, but at the cost of having to relocate the hole that the brake cable is in to align that.
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Old 12-15-2018, 09:56 AM
Karttekk Karttekk is offline
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It's a model 425-426.

Here is a parts breakdown. https://americanlandmaster.com/pdfs/...l_20030121.pdf

Call American Landmaster for support.

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---------- Post added at 11:47 AM ---------- Previous post was at 11:45 AM ----------

Scroll down to 425-426

https://americanlandmaster.com/manua...karts-manuals/

---------- Post added at 11:56 AM ---------- Previous post was at 11:47 AM ----------

That kart shipped with a clutch, refer #4335 in the parts diagram.

https://gokartsrus.com/12971-clutch.html
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Old 12-15-2018, 04:41 PM
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I'm sorry, I should have specified, it's a 435B/436C. So you were close but not quite there. His go kart has 3 bars under the engine. A 425-426 only has two. This is the right manual.
https://americanlandmaster.com/pdfs/...c_20040928.pdf
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Old 12-17-2018, 07:04 AM
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The sprocket on your axle is way too small to be directly connected to a TC or clutch. This kart had a jackshaft and compound gearing. Either replace the axle sprocket or reinstall the jackshaft.
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Old 12-17-2018, 08:52 AM
Leelee91 Leelee91 is offline
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Do you have a link where there are photos of these parts and a link to where I can order them . I am a beginner of trying to lean about go karts and my cousin is too busy to help me right now
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Old 12-17-2018, 10:12 AM
Leelee91 Leelee91 is offline
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If I stick to the original setup without the torque converter would I just need a bigger sprocket for the chain part
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Old 12-17-2018, 01:04 PM
J.S.@SMS J.S.@SMS is offline
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If you could find a bigger sprocket for the axle (like a 60 tooth) it would work, but the problem isn't the sprocket itself but that it is a sprocket brake drum combo. And its a 3/4 shaft that is just long enough for the stock combo.

I'm working on re-configuring my minibikes stock jackshaft (20 tooth input and 10 tooth output) to accept a 30 tooth input and 9 tooth output. That will make the gear ratio 9:1 overall.

I will post some pics shortly.

PS. My minibike now has a torque converter on it so I had the reduction assembly left over.
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Old 12-17-2018, 01:36 PM
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So here are the pics.
So this is what I had to do with the sprocket and brake drum so that the sprocket lined up.
Click image for larger version

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This is a picture from slightly farther away to show the complete setup.
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And this is a pic of the model number.
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Old 12-18-2018, 07:26 AM
Leelee91 Leelee91 is offline
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Is that the mode number for the sprocket
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Old 12-18-2018, 07:44 AM
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That is the model number for the kart. The sprockets that I found are:
9t 41/420/40 sptocket.
https://www.gopowersports.com/9t-5-8b-41p-sprocket/
30t 420 sprocket.
https://www.gopowersports.com/30-tooth-sprocket-mini/
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Old 03-11-2019, 12:31 PM
Leelee91 Leelee91 is offline
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Here is what I have done so far but now the axle does not spin when I give the go kart gas.[QUOT
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Old 03-11-2019, 12:41 PM
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Update photo of switching sprocket and brake cable
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Old 03-11-2019, 12:42 PM
Leelee91 Leelee91 is offline
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But now the axle doesn’t spin when engine is engaged
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Old 03-11-2019, 12:59 PM
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Well if you are still using that tiny sprocket on the axle, you are just not converting enough RPMs to torque. Your engine plain is running out of power. Get rid of that tiny sprocket and get one probably around 60 teeth. A proper sized sprocket should be around 9" in diameter.
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Old 03-13-2019, 08:49 PM
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My suggestion for the sprocket situation is this.
This sprocket with the 3/4" bore option:
https://www.gopowersports.com/mounti...cket-and-drum/

This sprocket with the 60 tooth option. (The hub is available here too):
https://www.gopowersports.com/sprock...-dual-pattern/

And this brake drum:
https://www.gopowersports.com/4-brake-drum-1246-manco/

The total should be around $45-$50 +s&h.
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Old 04-10-2019, 03:58 PM
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I forgot about this thread, so here's a small update. I got my setup to work for a few seconds. It felt pretty torquey. But I soon discovered that the mount on the jackshaft bearing was there for a reason. So now I need to straighten the back plate and add a support, and hopefully it'll work. Also I had to temporarily rob the muffler off of my go kart temporarily, so I'll be looking into getting a header.
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