5 Most Common CFMoto UForce 600 Problems (And Fixes)

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The UForce 600 is one of CFMoto’s two available utility side-by-side models, along with the UForce 1000.

It is looked at as one of the better values in the industry, and with good reason based on plenty of positive owner feedback.

But it does have its drawbacks, as owners have identified a few common CFMoto UForce 600 problems.

These issues include:

  • Stiff shifting
  • Poor gas pedal response
  • Excessive engine noise
  • Excessive heat in cab
  • Excessive heat under seats

This guide will detail each of these issues, along with some proven fixes for each and how easy they are to overcome.

You can also check out this full review of the UForce 600 for more on this model, as well as the most helpful CFMoto owner reviews for more on the overall quality of their full line of off-road vehicles.

Stiff Shifting

The most common complaint among UForce 600 owners is with the gear shift being stiff and hard to move into different gears.

Owners find that shifting gears is sometimes as easy as a knife through butter, while other times it takes plenty of force to jam the gear shift into the correct gear.

The stiffness occurs most often when shifting into Reverse or Low gear from a stop, and can be especially problematic if on an incline when making a shift.

There are two main causes of this:

  • The shift linkage needs an adjustment
  • Shifting during higher RPMs is tough on the gears

Shift Linkage Adjustment

Stiff shifting is a tell-tale sign of the shift linkage needing an adjustment.

Many times, the lock nuts that hold the shift linkage in place will vibrate loose over time, leading to the shift linkage moving to an incorrect position.

It will need to be adjusted back into the right place to help alleviate this stiffness in the gear shift.

To make this adjustment, locate the shift linkage cable under the passenger seat towards the center of the vehicle.  There will be two locking nuts holding it in place.

Loosen the back nut 1.5 to 2 turns to shift it to the right.  Next, tighten the front nut in the same direction to lock it in place.

Owners can use the gear shift while making this adjustment to ensure the shift linkage is reset in the correct position.

Shifting During Higher RPMS

When the RPMs are high, the gear shift is tougher to shift.  Drivers need to find the sweet spot where there is minimal load on the gears in order to make a smooth shift to another gear.

This is the main reason the problem occurs more often when on an incline.

While adjusting the shift linkage should help, owners can also try bumping the gas pedal while simultaneously tapping the brake when shifting gears.  This should help complete the shift a little easier.

Poor Gas Pedal Response

The second most common complaint surrounding the UForce 600 is poor gas pedal response at lower acceleration leading to a jerky ride.

This jerkiness mostly subsides once the vehicle gets past a speed of 15 to 20 mph, but this issue can make trail riding or stop and go riding tough to do.

This same issue affects the UForce 1000 and a few of the CFMoto ATV models, and is mostly due to an issue with the stock clutch system.

There are two ways owners can overcome this jerkiness at low speeds:

  • Tune the Electronic Control Unit
  • Upgrade the clutch system

Tune The ECU

By having the ECU tuned, the optimal air to fuel ratios for each throttle position and RPM level will be recalculated and applied to your vehicle.

This will result in much better throttle response, which will help to relieve the jerkiness experienced to low speeds.

But tuning the ECU has other benefits, including increased horsepower and torque as well as usually reprogramming the radiator fan to engage at a lower engine temperature to help prevent overheating.

Upgrade The Clutch

Upgrading the clutch should also take care of this issue of jerkiness, and can be done in two different ways.

Re-Clocking The Secondary

For owners who want to save some coin and do this on their own, there is an adjustable spring in the secondary clutch that can be re-clocked to another setting.

This spring offers twelve different settings, each one with a different blend of power, acceleration, and speed.

The UForce 600 should come factory-set on the B-1 setting.  Re-clocking the spring to the A-1 or C-1 settings should help alleviate the jerky ride.

Clutch Kit For The Primary

Owners can also install a clutch kit for their primary clutch, which generally upgrades the spring and weights in the stock clutch system.

There are a couple of different aftermarket clutch kits that will help overcome these clutch issues in the UForce 600 and result in a smooth ride at lower speeds.

Both RNG Performance and Main Street Cycle make clutch kits that are highly recommended and specific to CFMoto utility vehicles.

MORE: CFMoto ZForce Top Speed For Every Model

Engine Noise

Though the UForce 600 is powered by a single-cylinder engine, the engine noise it emits is much louder than that of even the more powerful V-Twin engines that power the UForce 800 and UForce 1000.

This engine noise can be so loud that it’s sometimes hard to hear your passenger when riding, and it’s amplified in vehicles with a full cab enclosure.

A number of owners have overcome this by purchasing sound deadening mats on Amazon and installing them in their vehicles.

Installing self-adhesive sound insulation in areas like the motor cover, motor tunnel, exhaust manifold behind the motor, and store boxes under the seats should help to muffle the noise as well.

MORE: CFMoto ZForce 950 Problems

Excessive Heat In Cab & Under Seats

Aside from excessive noise in the cab, owners also complain of excessive heat in the cab and under the seats of the UForce 600. 

This can be convenient during colder months, but can make riding pretty uncomfortable during warmer days.

This excessive heat is a result of hot air from the radiator venting through areas in the dash and hot air from the motor warming the undersides of the seats and venting up from behind and between the seats.

There are a few ways to overcome this.

Heat Shields

The most effective way to beat the heat in the cab is by installing heat shields.  These generally fit under and up the backs of the seats.

There are a number of heat shields available on Amazon, but owners can also create one on their own by using roofing rubber, windshield sun deflectors, etc. in the same fashion.

Applying heat reflective tape to the underside of the plastics in the center console should help as well.

Remove Doors & Crack Windshield

For those with a windshield installed, this will amplify the heat problem during warmer days.  Be sure and ride with it fully open and cracked if able, as this should help with the air circulation in the cab.

And for those with side doors installed, removing them may not be ideal but will help tremendously with this heat issue.

Install an Automotive Fan Under The Seat

Installing an automotive fan under the seat will help with air circulation in the cab as well, which will minimize the heat and have your legs feeling much cooler.

Parting Thoughts

While the UForce 600 does come with some drawbacks, it is still one of the better performance to price values in the UTV industry and comes with a number of accessories only included as extras in some more expensive models.

For more information on CFMoto UTVs and ATVs, check out these guides before you go: