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08-29-2022, 09:49 AM | #1 |
Not Yet Wild
Join Date: Aug 2022
Posts: 5
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2021 Express S4, how to increase speed, maybe governor adjustment
Researched this site and not coming up with an answer.
Current top speed is 21mph and really want to get another 5-10 mph. It is a 2021 Express S4 EFI, lifted. Since it is still under warranty, really didnt want to put a different rear end gear in it. Barely fits in the garage so I can't put taller tires on it either. I adjusted the throttle cable and it is at full throttle. Not sure if the governor can be adjusted or what the proper coarse of adjustment might be. |
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08-29-2022, 09:56 AM | #2 |
Gone Wild
Join Date: Dec 2009
Location: Aiken, SC
Posts: 12,997
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
Adjust the small cable on the transaxle so that fewer threads are on the spring side. Don’t get too crazy as you could over rev the motor..
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10-04-2022, 01:06 PM | #3 |
Not Yet Wild
Join Date: Aug 2022
Posts: 5
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
The only cable that has a spring is the gear selection. It seems that there is a governor that is preventing an increase in RPM.
At a total loss on this one. |
10-05-2022, 09:09 PM | #4 |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,421
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
What engine does this have? It could have an electronic governor/rev limiter. If you follow the accelerator cable back to the rear, does it hook onto the transaxle or does it go directly to the carburetor?
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10-05-2022, 09:18 PM | #5 |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,625
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
An extra 5-10mph is a lot to ask of that little cart. You’re gonna need gears to accomplish that without serious impact to the life or reliability of the engine.
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10-07-2022, 08:14 AM | #6 |
Getting Wild
Join Date: Dec 2014
Location: Lexington, KY
Posts: 84
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
Depending on the size of your tires, you might not get much more than 21, if the throttle cable it adjusted already. I always feel like the brakes get very sketchy over 21+
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10-07-2022, 08:40 AM | #7 |
Not Yet Wild
Join Date: Aug 2022
Posts: 5
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
It is a Kawaski 13hp, pretty sure it has a electronic governor.
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10-07-2022, 08:41 AM | #8 |
Not Yet Wild
Join Date: Aug 2022
Posts: 5
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
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10-07-2022, 10:58 AM | #9 |
Gone Wild
Join Date: Dec 2009
Location: Aiken, SC
Posts: 12,997
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
If it is the Kawasaki motor it should have this setup..
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10-12-2022, 10:38 AM | #10 |
Not Yet Wild
Join Date: Jul 2010
Location: Pennsylvania
Posts: 40
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Re: 2021 Express S4, how to increase speed, maybe governor adjustment
I also have a 2021 Express S4 and can't really find that much
info on mods, oil change, clutch etc.. Any place to land info is greatly appreciated |
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