CF MOTO 500 won't go faster than 40km/h

Started by John90, May 09, 2021, 03:07:33 PM

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John90

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John90
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Hi!

I own, for about one year, a CF MOTO 500 made in 2014, I bought it second hand.
I bought the atv with the dashboard broken, thinking that some day I will replace the dashboard.

About 2 months ago I bought a dashboard from china, using the part no. written on the broken dashboard.
I replaced the broken dashboard with the new one, everything works properly except for one thing, the atv won't go faster than 40km/h, it is stalling, if I lower the gas to go under 40km/h, everything goes back to normal.
I clean the carburetor, spark plug, everything seems ok.

When I replaced back the broken dashboard, the atv runs fine with no problem, I could easily reach 70km/h in no time.
I know that the atv has two mechanical speed limiters, one in the carburetor and one in the throttle (that screw that limits the maximum speed), I remove them.

Does anybody know what is the issue?
It is possible that the dashboard have a speed limit? How do I remove it?

I attached a picture with the dashboard that I bought.

Any feedback is appreciated!
Thanks in advance! :D

NMKawierider

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2015 ZForce 800 53 (Trail)
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NMKawierider
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That doesn't look like any CFMoto dash I have ever seen. Is it identical to the broken one? Yes, there are built-in RPM limiters in the ECU usually. One so it will not exceed like 7750 rpm, one for the reverse and one for the diff-loc in 4wd.
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doug80638

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Ya, that dashboard is suspect. Check page 54/56 of the manual below to see what it should look like.

https://cfmotousa.com/portals/0/2010-2014_500-B,500-C,600-B,600-C_EFI_OM.pdf

But I'm not certain. Checking Alpha-Sports, there are several analogue and LCD dashboard options:

https://alpha-sports.com/cfmoto_parts.htm?fpg=/cfmoto/2014/2014%20CF500-2(carb)/17.htm

Which part number are you using?
2017 Zforce 800 - Red
SuperATV Flip windshield
Tusk soft rear window
Uni-Filter foam air filter
Bandit springs

NMKawierider

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I see by the parts list they made several dash types, 2 ANALOGUE, one in KM/H and one in MPH. and 2 LCD or digital with the same difference. Some are not made any more...but some are.
2015 Z Force 800 53/Trail EPS
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage |7- 9.7" GPS Systems | Bandit Springs Rear & Gen-3 Shocks Front | Cage Chop Mod

My Videos On YouTube

doug80638

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Will it go faster if the limit override switch is held down?
2017 Zforce 800 - Red
SuperATV Flip windshield
Tusk soft rear window
Uni-Filter foam air filter
Bandit springs

John90

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John90
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Hi everyone!

Thank you very much for your help.

Quote from: NMKawierider on May 09, 2021, 04:45:16 PM
That doesn't look like any CFMoto dash I have ever seen. Is it identical to the broken one? Yes, there are built-in RPM limiters in the ECU usually. One so it will not exceed like 7750 rpm, one for the reverse and one for the diff-loc in 4wd.
Yes it is identical.

Quote from: doug80638 on May 09, 2021, 04:52:19 PM
Ya, that dashboard is suspect. Check page 54/56 of the manual below to see what it should look like.

https://cfmotousa.com/portals/0/2010-2014_500-B,500-C,600-B,600-C_EFI_OM.pdf

But I'm not certain. Checking Alpha-Sports, there are several analogue and LCD dashboard options:

https://alpha-sports.com/cfmoto_parts.htm?fpg=/cfmoto/2014/2014%20CF500-2(carb)/17.htm

Which part number are you using?
The part number is the same as the original one: 9010-170110


Quote from: doug80638 on May 09, 2021, 10:20:39 PM

Will it go faster if the limit override switch is held down?
No.

Eventually I found that the dashboard comes with a limit on the speed of the ATV and my dashboard it was limited to 40 km/h (like a tractor).

I will have to find a solution to remove the speed limiter without affecting the good functioning of the dashboard or the ATV.

Thank you for your help!