Yamaha golf cart shaking at low RPMs (What do I do?)

My usually reliable Yamaha G22 golf cart now has this super annoying issue where it starts shaking when running at low RPMs. It’s making my rides unbearable. Please help me.

 

Response

 If I were you, I would check and replace the motor brushes if they look worn out.

 

Solutions that worked for users

Solution	Users Who Found Success	Personal Experience	Estimated Cost (USD)	Time Needed (Minutes)
Check Motor Brushes	2	Replaced worn-out brushes	$20-$50	30-60
Inspect Primary Clutch	2	Removed and inspected clutch	$0	20-40
Check for Flat Spots on Tires	1	Rotated tires	$0	10-20
Check the Weights in Primary Clutch	1	Checked weights	$0	20-40
Check the Bushing	1	Replaced bushing	$10-$20	15-30

Symptoms

• Golf cart shakes or vibrates at low RPMs
• Cart seems to stutter or jerk while accelerating
• Unusual noises coming from the engine or clutch area

Possible Causes

• Worn-out motor brushes
• Damaged or misaligned clutch
• Flat spots on tires due to prolonged parking
• Worn-out or cracked bushings

Solutions that Worked

1. Check Motor Brushes

Steps:

1. Disconnect the battery to ensure safety.
2. Remove the motor cover using a screwdriver.
3. Locate the motor brushes on the sides of the motor.
4. Use a flashlight to inspect for wear and tear.
5. If they look worn out, remove them using pliers.
6. Install new brushes.
7. Reconnect the battery and test the cart.

Expert Tip:

Always disconnect the battery before starting any electrical work to avoid accidents.

2. Inspect Primary Clutch

Steps:

1. Park the cart on a level surface and engage the parking brake.
2. Open the engine compartment or remove the seat, depending on your cart model.
3. Locate the primary clutch connected to the engine.
4. Use a clutch puller tool to remove the clutch.
5. Inspect for wear, cracks, or misalignment.
6. If misaligned, realign using a rubber mallet or replace if necessary.
7. Reinstall the clutch and close the engine compartment.

Expert Tip:

Use a clutch alignment tool for precise alignment.

3. Check for Flat Spots on Tires

Steps:

1. Park the cart on a level surface.
2. Inspect each tire for flat spots.
3. If flat spots are found, consider rotating the tires.
4. Inflate the tires to the recommended PSI.
5. Test drive to check for vibrations.

Expert Tip:

Regularly check tire pressure to avoid flat spots.

4. Check the Weights in Primary Clutch

Steps:

1. Remove the primary clutch using a clutch puller tool.
2. Open the clutch to expose the weights.
3. Inspect the weights for wear or damage.
4. Replace if necessary.
5. Reassemble the clutch and reinstall it.

Expert Tip:

Damaged weights can cause imbalance and vibrations.

5. Check the Bushing

Steps:

1. Locate the bushing in the suspension or steering system.
2. Inspect for cracks, wear, or excessive movement.
3. Remove the damaged bushing using a bushing removal tool.
4. Install a new bushing.
5. Test drive to check for improvements.

Expert Tip:

Regularly lubricate bushings to extend their lifespan.

Handy Tips

• Always wear safety gloves and goggles when working on your golf cart.
• If you’re not comfortable doing these repairs yourself, don’t hesitate to consult a professional.
• Keep a set of basic tools like screwdrivers, pliers, and a rubber mallet handy for quick fixes.

Golf Cart Models Where This Worked

• Yamaha G29 (2012)
• Yamaha G2
• Yamaha G8
• Yamaha G1