Coleman UT400 Charging Issue

[kylejoh]

Hi, 

I have a Coleman UT400 that is a couple years old (2021), that won't seem to hold a charge. We have replaced the battery several times, and the unit will startup and run for a period of time, then die out. When I attempt to restart, it acts as if the battery is weak. Install a new battery, and it repeats the cycle. 

Do the magnetos go bad on these things? If so, how hard are they to get to and change?
 

Thanks!

Kyle 

[Andy Dickerson]

It might not be a charging issue. It could be drain on the battery. Put a volt meter on the battery while it's running, if you are getting 13.5V or higher then the battery is being charged. If you are getting less than that i.e. the battery reads 12.5v then you do have a charging problem. I just found a .450ma drain on my axis 700 that is coming from the ECU and it drains my battery in a very short time period. If the battery is charging you'll need a volt meter capable of reading amps. Search youtube for parasitic drain on a battery and there's clear instructions how to find it. 

[Lucas Lenartowicz]

Hey,

We have a 2008 Hisun 700 and it had a similar problem. Would die at the worst times, idled rough, and wouldn't restart. Turned out to be the rectifier/charging unit. Got the part on amazon I believe. Diagnosed it using a pdf from RMSTATOR, they have excellent diagnostic breakdown that really only requires a multimeter. https://rmstator.com/pub/media/pages/static-pages/tests-diagnostic/pdf/electricals-gremlins-20170223-EN.pdf

[NewtoUTV]

Have you solved this problem, I seam to be having the same issue.  Lucas do you have a link to the part that you purchase that you could share. 

[Lucas Lenartowicz]

Hey, yes it fixed our problem but I highly recommend that you follow the troubleshooting guide I linked above. We got a cheapo part off amazon... I attached the link but I don't know if it would work for you.

https://www.amazon.ca/gp/product/B07R19CVCB/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

Luke

[NewtoUTV]

I beleive I figure out the issues was that the cable that supposed to plugged into that, was not.  It was just hanging down.  Never was plugged in from the manufacture.  

[Rainman]

On 12/11/2023 at 3:54 PM, Lucas Lenartowicz said:

Hey,

We have a 2008 Hisun 700 and it had a similar problem. Would die at the worst times, idled rough, and wouldn't restart. Turned out to be the rectifier/charging unit. Got the part on amazon I believe. Diagnosed it using a pdf from RMSTATOR, they have excellent diagnostic breakdown that really only requires a multimeter. https://rmstator.com/pub/media/pages/static-pages/tests-diagnostic/pdf/electricals-gremlins-20170223-EN.pdf

I went to the rmstator website to see what other charts they might have, but when choosing the rig, they do not show a Hisun or Coleman. What did you choose, or doesn't it matter? I've noticed this on other websites too, where as they never list Hisun or Coleman as a choice.

[Lucas Lenartowicz]

The one I used and linked above is a generic chart. Unfortunately there is very little information on Hisun... and I guess Coleman machines... Maybe becuase Hisun is a knockoff of the Yamaha Rhino, at least the older Hisuns. For ours I try to get aftermarket Yamaha Rhino parts when I can as usually they are cheaper and more accessible. But I don't think it works that way for the new machines as they aren't really copies anymore... unless they are and I don't know.

Luke 

[Andy Dickerson]

https://motorcycledoctor.com/hisun-parts/magneto-400/

 

Here one at the motorcycledoctor website.