Question about Ctm HS 890 4 Wheel Heavy Duty Power Scooter

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I have a ctm 4 wheel scooter with nearly new batteries. The speed is erratic in the forward position, constantly jerking from fast to slow speed. What is the problem?

CTM 4 wheel scooter heavy duty 400 lbs

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Sounds like throttle pot needs replacing.

Posted on Nov 23, 2014

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Posted on Jan 02, 2017

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wcdoc1953
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SOURCE: tire pressure for the The

This scooter may have air free tires not requiring any inflation. This type of tire has foam in the tire and is maintenance free. Look for a air inflation nozzle coming out of the tire. If you don't see one the tire is air free. If you do have a nozzle, then you can add air up to the maximum inflation pressure written on the side of the tire. Hope this helps.

Posted on Feb 21, 2011

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SOURCE: Need owners manual for A ctm hs 740 mobility

go onto ctm homecare website and into rescource centre then dowloads and click on 740, regards, Bill.

Posted on Nov 06, 2011

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Hi there is a PDF instruction download type in CTM850 mobility scooter schematic. INCLUDES HS-890 or U can get in touch with www.ctmhomecare.com.they might b able to help .good luck

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CTM HS-580 will not go, batteries are fully charged and no fault lights showing


H i, is there a click from the rear of the scooter when you push the lever to go forward or backwards ??

first of all disconnect one battery, now located the controller and follow the leads to the motor and brake , disconnect look at the connectors and refit , using contact cleaner if possible, making sure they are a good fit,,,

couple of points,,

The wiring from the throttle lever to the controller may be damaged so the controller never see's the pot move (resistance change) as it were..


At worse the controller may have failed, i offer a free testing service,, you only pay the return postage..

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www.gewizrepairs.co.uk

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Panther lx4 runs irregularly .batteries are brand new. ride well for 10 minutes after it starts to slow down then accelerate then slow down etc...


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Just bought this from an individual who knew nothing about it. Scooter is in excellent condition however it has been sitting for a bit. The problem is the scooter only goes forward when in the High speed...


Jade
This model Drive Phoenix 3 wheel is found for sale at pharmacies and is subject to floor model abuse.

Most common abuse is not recharging batterys and letting them sulfate thus
reducing life of of charge.

I have found that the foward and back-up levers have been bent
by people sitting and squeezing both levers at the same time. the resulting misshaping of the levers results in a very slow speed comand to the controller because of limitted movment of speed control. The result is that main control (turtle/hare) must be advanced to fast (hare) position to get scooter to move.

I have had success straightening levers by carefully bending them in opposite direction on my Phoenix 3W ( which was a clearence item with no warranty.)

The real (legal)solution is ordering a new lever having a technician
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Hope this helps....jth1939

Apr 02, 2011 | Drive Medical Phoenix 3 Wheel Compact...

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New battery. hooked up correctly. But, scooter will still barely go in reverse super slow. forward speed slow .can throttle cable be problem/ when I push inside of speed lever it moves faster. pushing ends...


Hi. Did the machine used to operate properly in the past? Sometimes previous owners or technicians have changed the programme for owners for different uses. What you describe sounds like a faulty throttle pot ( Wig Wag ). I have changed many throttle pots for this reason.
Also check battery and motor connectors.
Do you have another switch on the machine for controlling the speed, such as an indoor/outdoor switch? Good luck. Neil.

May 12, 2010 | Activeforever Lynx L4 Portable Mobility 4...

1 Answer

My Scooter slows waaaay down to almost stop, then goes, then slows, then goes. Speed dial d/n seem to make any difference? Does this even with batteries changed out to new?


Sounds like a throttle pot fault (the part that the throttle lever is attached to). This would need testing at a dealer or with a volt meter (set to ohm's) and if found to be faulty, will need replacing. If you test it yourself, there is usually a number on the top of the pot, usually 5k or 20k and this is what you need to set your meter too. Place the probes from the volt meter, black onto the centre wire and red onto either of the other wires (there should be 3) and slowly press the throttle lever first forward, then reverse, and constantly keep an eye on the reading from the volt meter. The reading should go up to approx. the number on the top of the pot, i.e. a 5k pot should read about 4.9 to 5.1 ish on the meter. If this number fluctuates up or down quite rapidly while the lever is held in a static position, it will indicate a faulty pot. This is in fact a common fault with nearly all makes and models of scooter and usually a fairly cheap and quick repair.

Mar 28, 2010 | Golden Technologies Avenger 4 Wheel...

1 Answer

I have a 2002four wheel Legend Mobility scooter.


Hi. A lot of scooters have a seperate switch to select a high or low speed setting.
This switch is sometimes labeled indoor/ outdoor.
I have had a few scooters with a similar fault, and the wires that connect to the high/low switch have broken of the terminals on the rear of the switch.
It could also be a faulty speed control pot.
Check these and good luck. Neil.

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