Help with used Kart

[Oversplode]

Hello everyone! Just joined up and got a question. I just purchased the kids a Trail Master MID XRX/R. The engine starts up and runs great. It will not go into gear and move forward or reverse. The shift linkage appears to be working. My first thought was the clutch may be bad. But I am also wondering if something in the gearbox may be broken. Maybe the shift fork or maybe the drive chain. I am not sure where to start. I dont want to remove and take apart the gear box if its the clutch. Any help would be appreciated.

 

[OPmini]

If you could post some pictures that would be helpful

 

[Oversplode]

Thanks Op. here are some pics. Let me know if you are looking for a certain angle.

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[OPmini]

I highlighted your image to make things easier (see imagur link)(the torque converter is in blue, torque converter clutch is in red, rear pully in pink, and drive chain/gear yellow ). So it looks like you have a torque converter on your engine that goes to a gearbox then a small gear coming out of the gearbox and going to the big gear on the axle. What I would do to find out what the problem is, first place the back of the buggy up on some blocks or a jack so the tires are off the ground. Second start the engine and rev it if the shaft going out of the rear pulley wheel highlighted in pink and into your gearbox moves then your clutch and torque converter are fine and its a gearbox issue. BUT if it doesnt move than your clutch may be bad (its only $30 for a new one) test this out and let me know the results and ill help you fix it! good luck!

imagur link: https://imgur.com/gallery/eKhgtOS

also try shifting through all gears incase your in the wrong gear

 

[Oversplode]

Thanks I will report back tomorrow. Thanks for your help!


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[Oversplode]

Well it must be the gearbox. I guess it time to take it off and open it up. Pictures to follow once I get it off.


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[OPmini]

Well it must be the gearbox. I guess it time to take it off and open it up. Pictures to follow once I get it off.


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well that sucks you might want to consider tossing the gearbox and torque converter and just run a chain from a clutch to the axle, or get a torque converter with a gear on it and run a chain from that to the axle. Otherwise you'll prob have to drop $100 on a new gear box or $30 on clutch + chain OR $80 on torque converter + chain, BUT if you have a welder you could get a gear and weld it to the shaft coming out of the torque converter that goes into the gearbox and run a chain to the axle for like $25

here's a link to (what looks like) a replacement gearbox: https://www.gokartmasters.com/trailmaster-mid-xrx-r-blazer-200r-go-kart-reverse-gearbox/

 

[Oversplode]

well that sucks you might want to consider tossing the gearbox and torque converter and just run a chain from a clutch to the axle, or get a torque converter with a gear on it and run a chain from that to the axle. Otherwise you'll prob have to drop $100 on a new gear box or $30 on clutch + chain OR $80 on torque converter + chain, BUT if you have a welder you could get a gear and weld it to the shaft coming out of the torque converter that goes into the gearbox and run a chain to the axle for like $25

here's a link to (what looks like) a replacement gearbox: https://www.gokartmasters.com/trailmaster-mid-xrx-r-blazer-200r-go-kart-reverse-gearbox/

So finally had time to tear into the gearbox. Everything was fine! Upon putting it back together I noticed the gear (think it’s called a sprocket) that drives the chain was slipping on the shaft. I tapped the little square pin out reinstalled the gear and put the square pin back in. The go kart will drive now, put that gear is still slipping occasionally. Should I pull the gear back off and buy a new square pin. I am thinking maybe the old one is wore out causing it to slip. I was kinda surprised that shaft didn’t have groove in it for the pin to sit in. To me it seems like only a matter of time before the pin slips again. I should have taken a picture but didn’t think about it sorry.


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[OPmini]

well thats good news! yeah post a pic and ill take a look.

 

[landuse]

A pic might help. Sorry