I have a Razor 325 Scooter that will not move with any weight...like 60 pounds from my 7 year old. I tried to fix it a couple of years ago after getting new batteries. The repair shop replaced the Motor, Throttle and Control Box. The unit only worked for about 6 months and then kept going through batteries and now it has brand new batteries (for the 5th time) but still will not operate with any weight. Have verified battery connections and output. When you lift up the unit it runs and the rear wheel spins freely. Throttle shows proper voltage and charge. Can you please advise on what part or parts I should buy from you to fix this issue.....Thanks!!!
The first step I would take is to load test the batteries, even if they are new, because one or more of them could be defective.
A simple load test, assuming the scooter will not move when throttle is engaged, would be to leave the scooter on the floor, turn it on, fully twist the throttle, and look at the battery gauge on the throttle. If the throttle's green 'FULL' light goes out and only the throttle's red 'POWER' light and yellow 'LOW' light remain on with the throttle fully engaged then the battery pack is dropping too much Voltage under load which is causing the problem. If that is the case then the batteries need to be replaced.
If all three lights on the throttle stay on when the power is on and the throttle is fully engaged with the scooter on the floor then please let me know and I will provide the next troubleshooting step to take.
The green and yellow lights actually flash a bit with the red constant. Interstate battery just put the batteries in and conducted several tests on the batteries both together and separately to make sure everything on the battery side was correct.
If bypassing the power switch and circuit breaker do not solve the problem, then the issue would have to be with the controller, throttle, or motor. Please let me know if the bypass tests do not help and I will let you know the next troubleshooting steps to take.
I am not clear on where to attach the bypass wire. I have a black and red coming from the batteries direct to the circuit breaker and then three lines on the power switch. The battery power going direct with two lines to the circuit breaker does not seem correct…with no output??
No Luck….jumper did not make any difference bypassing either switch. What do we do next?
Working throttles have a power output roughly between 1-4 Volts DC. The output Voltage can be as low as 0.5V and as high as 5 Volts DC on a good working throttle. The speed controller will only read throttle output Voltages between 1-4 Volts DC so if the throttle Voltage is under or over 1-4 Volts DC that is normal and the throttle is good.
During testing slowly turn the throttle to full power and read the Voltage on the multimeter. The Voltage should react proportionally to the position of the throttle as it is being turned. A released throttle should have a low Voltage reading and a throttle in the full throttle position should have a high Voltage reading.
Different versions of Razor E325 scooters were made with different throttles. Please let me know how many wires your throttle has and I will let you know which wire is the +5V input, ground, and output wire.
Throttle has five (5) wires.
What is the best method for connecting the test wires to both the throttle and motor so that the wires to each device do not require cutting?
Throttle has 5 wires...what are the 3 wires that are connected for the test?
I get the instructions above. I was just inquiring if I did not have to cut the motor wires to test....figured it out myself ...all is required is the use of standard wire connectors at the end of the plastic connector...they fit fine.
My model is a 31. it appears in your parts area the throttle does not have the power indicators. My unit was replaced at the shop with the 5 wire with power indicator would this be an issue?
That is a great idea to use .250" female quick connect terminals for testing the motor so you do not need to cut the wires. We have so many CNX-50 connectors laying around here that I never thought beyond using one of them for the test.
The Razor E300/E325 5-wire throttle with power indicators can not replace the 4-wire throttle without power indicators because the 5-wire is a variable speed throttle and the 4-wire is an on/off type throttle. Since the scooter was running for 6 months the throttle and controller would both have to have been replaced with 5-wire versions. It would not cause any issues to replace a 4-wire single speed (on/off) throttle and controller with a 5-wire variable speed throttle and controller as long as the installation was performed correctly. If the scooter worked for 6 months then the parts had to be matched and correctly installed.
I had a customer a few months back have the exact same problem with their Razor scooter with the motor not producing enough power. He replaced the batteries and throttle without any luck. He said the problem started immediately after the scooter had been knocked over and landed on its motor. I never heard back from him so I do not know if he pursued the problem and got it fixed though. If you figure out what the problem is please let me know so I will have a better idea what to recommend to others.
We are making progress!! The motor tested fine. Based on your throttle comment above I am thinking the throttle could be an issue. The unit only ran when I picked it up from the shop and then had the same issue with no power once I got it home. They stated it needed new batteries....obviously not the case. The controller (they installed) is model ZK2430hp-fs. Is this compatible with the newer style throttle they also installed? What do you recommend? should I go back to the original throttle type and speed controller? any benefit to one or the other?
I have not been able to test the throttle but want to get the scooter fixed ASAP. Based on one of your previous comments about trying a part or two that could be the issue (keep it easy) and since we have pretty much narrowed it down to only two. I would like to order a controller...since it is the easiest to install and to verify if the correct match was used by the previous shop. Can you please provide me the correct updated controller and throttle order info. I definitely want to use or replace the throttle with the newer (5 wire) adjustable throttle and thus controller.