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#1
12-21-2010, 03:55 PM
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Torque converter
Just purchased a used Manco XTK-706b and it ran good for awhile... Son calls me stuck and the Kart runs but doesn't move when you hit the gas. All belts and chain look fine. Any ideas? It has a torque converter not a clutch... How do you troubleshoot a torque converter?
TY, Kade 
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#2
12-21-2010, 06:03 PM
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it should have BOTH a torque converter (towards the rear) and a clutch (on the crankshaft of the engine. there has to be a clutch on there somewhere.
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07 HH250SS UNI HIT CLUTCH DR. PULLEY VARIATOR RED MAIN 17g ROLLERS 12T/45T SPROCKETS IRIDIUM PLUG HP CDI & COIL LED LIGHTS ASW CARBIDE UNI 12g SLIDERS RED MAIN 39T SPROCKET (coming soon)
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#4
12-21-2010, 08:18 PM
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Here's diagrams of your CVT system-http://www.*****************/asymapp.htm
You have maintenance that has to be performed on a regular basis to keep the CLUTCH portion working properly.The driven part of the CVT system doesn't require as much maintenance. If it won't move or act like it wants to move something is broken or the engine/belt adjustment has changed.You need to remove the belt/chain guards and inspect the CVT,elevate the rear tires and with it running observe if the clutch is closing in on the belt. Let us know what you find.
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#8
12-22-2010, 03:29 PM
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Unbolt the clutch from the crankshaft and inspect the interior for broken springs,or pins
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#12
12-23-2010, 01:31 PM
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if both your clutch and TC spin as the rpm's climb then they seem to be o.k. but if they are spinning and your rear axle sprocket is not.....
how is your sprocket attached to the axle? was it welded or have a set screw to hold it in place? did something break lose back there?
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07 HH250SS UNI HIT CLUTCH DR. PULLEY VARIATOR RED MAIN 17g ROLLERS 12T/45T SPROCKETS IRIDIUM PLUG HP CDI & COIL LED LIGHTS ASW CARBIDE UNI 12g SLIDERS RED MAIN 39T SPROCKET (coming soon)
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#14
12-23-2010, 01:50 PM
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Pics will help
"Go Advanced" next to post quick reply Then scroll down to "manage attachments"
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#15
12-23-2010, 01:51 PM
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manco,
i'm a little confused now....  a picture would really help so can get on the same page. 
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07 HH250SS UNI HIT CLUTCH DR. PULLEY VARIATOR RED MAIN 17g ROLLERS 12T/45T SPROCKETS IRIDIUM PLUG HP CDI & COIL LED LIGHTS ASW CARBIDE UNI 12g SLIDERS RED MAIN 39T SPROCKET (coming soon)
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#19
12-23-2010, 02:01 PM
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if you are refering to the little sprocket towards the front of that picture then i assume the key is sheared off. it looks like that shaft has a 1/4" keyway cut into it. there should either be a set screw or a 1/4" half-moon key in there to secure that sprocket and keep it from spinning.
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07 HH250SS UNI HIT CLUTCH DR. PULLEY VARIATOR RED MAIN 17g ROLLERS 12T/45T SPROCKETS IRIDIUM PLUG HP CDI & COIL LED LIGHTS ASW CARBIDE UNI 12g SLIDERS RED MAIN 39T SPROCKET (coming soon)
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#21
12-23-2010, 02:22 PM
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Did you remove a bearing and spacer from the back side of the driven unit shaft where that key is?
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#22
12-23-2010, 02:54 PM
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I started to get into the sprocket area...didn't see a screw or key on the visual side of the picture... then the sprocket locked up like it should... put the belt on and now my son is driving... hmm... thanks from Forestburg, TX... I will keep you informed on how it does today.
 MERRY X_MAS!!
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#23
12-23-2010, 03:01 PM
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Most of the jackshaft/driven sprockets have the key machined into them-Keep him close to the house!!! These CVT systems don't stop working and just start working again without another failure soon after.Good luck!
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#25
12-23-2010, 06:36 PM
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i'll bet you there is a set screw in there just barely making enough contact with the axle to drive that sprocket.....it's just a matter of time though, be careful driving that thing.
__________________
07 HH250SS UNI HIT CLUTCH DR. PULLEY VARIATOR RED MAIN 17g ROLLERS 12T/45T SPROCKETS IRIDIUM PLUG HP CDI & COIL LED LIGHTS ASW CARBIDE UNI 12g SLIDERS RED MAIN 39T SPROCKET (coming soon)
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#26
12-24-2010, 09:16 AM
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Well it has been going in and out...the immediate remedy is to tighten the bolts at each end of the drive shaft...that seems to work for awhile... I guess I need to undo the both bolts and see what is under the sprocket.. visually I cant see any spot for a set screw..
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#27
12-24-2010, 12:04 PM
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i would take them bolts off and see what's keeping (or suposed to keep) that sprocket in place before any damage is caused.....might be more expensive to fix if you wait until something gives out.
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07 HH250SS UNI HIT CLUTCH DR. PULLEY VARIATOR RED MAIN 17g ROLLERS 12T/45T SPROCKETS IRIDIUM PLUG HP CDI & COIL LED LIGHTS ASW CARBIDE UNI 12g SLIDERS RED MAIN 39T SPROCKET (coming soon)
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