Are you facing unexpected issues with your Coleman 125cc ATV? Don’t worry you’re not alone.
From engine troubles to electrical glitches, these common Coleman 125cc ATV problems can be frustrating but are often easy to fix with the right guidance.
In this guide, we’ll uncover 10 hidden issues and provide practical solutions to keep your ATV running smoothly.
Coleman 125cc ATV Problems (Short Overview)
The Coleman 125cc ATV can face problems like starting issues, engine stalling, or weak acceleration.
Electrical malfunctions and brake troubles might also occur over time.
But don’t stress, most of these issues have simple fixes, so you can get back to enjoying your rides quickly!
Read 10 Common Problems With Fixes In Easy Ways…
1. Starting Issues
One common problem with the Coleman 125cc ATV is trouble starting. This can happen due to a weak battery, loose connections, or a clogged carburetor.
These issues often frustrate riders, especially when they’re eager to hit the trails.
But don’t worry, most of these starting problems have simple fixes that can get your ATV running smoothly again.
Causes
- Weak or dead battery
- Loose or corroded electrical connections
- Dirt or debris clogging the carburetor
Fixes
- Charge or replace the battery if it’s not holding a charge.
- Check and tighten any loose or corroded wires.
- Clean the carburetor thoroughly to remove any blockages.
2. Engine Stalling
Engine stalling is a common problem faced by Coleman 125cc ATV owners. It can be frustrating when the engine suddenly shuts off, especially during a ride.
Stalling usually happens due to fuel delivery issues, clogged air filters, or ignition system problems.
Identifying the cause and addressing it quickly is key to keeping your ATV running smoothly.
Causes
- Dirty or clogged air filters blocking airflow.
- Faulty spark plugs or ignition system failure.
- Incorrect carburetor adjustments or fuel delivery issues.
Fixes
- Clean or replace the air filter regularly.
- Check and replace faulty spark plugs as needed.
- Adjust the carburetor properly and ensure the fuel system is clean.
3. Weak Acceleration
If your Coleman 125cc ATV struggles with weak acceleration, it can make riding frustrating and unsafe.
This issue often happens due to problems like a clogged carburetor, dirty air filter, or worn-out spark plug.
Poor fuel quality or incorrect tuning can also impact the ATV’s performance. Identifying and fixing these problems is key to getting your ATV back to running smoothly.
Causes
- Clogged carburetor reducing fuel flow
- Dirty air filter blocking airflow
- Worn spark plug causing weak ignition
- Low-quality fuel or improper tuning
Fixes
- Clean the carburetor and remove any blockages
- Replace or clean the air filter regularly
- Check and replace the spark plug if needed
- Use high-quality fuel and ensure proper tuning
4. Electrical Malfunctions
Electrical issues are common with the Coleman 125cc ATV and can cause starting problems or interruptions while riding.
Loose wiring, a dead battery, or faulty fuses are often the culprits behind these issues.
Causes
- Loose or damaged wires
- Dead or weak battery
- Blown or faulty fuses
Fixes
- Inspect and tighten all wiring connections
- Replace or recharge the battery as needed
- Check and replace damaged fuses
5. Brake Problems
Brake issues are a common concern for Coleman 125cc ATV owners.
Poor braking performance can arise from causes like worn-out brake pads, low brake fluid, or misaligned brake lines.
These problems can directly impact safety and handling, making it crucial to address them quickly.
Causes
- Worn or damaged brake pads
- Insufficient brake fluid levels
- Misaligned or loose brake lines
Fixes
- Replace worn brake pads promptly
- Check and refill brake fluid levels regularly
- Realign or tighten brake lines as needed
6. Battery Drain
One common issue with the Coleman 125cc ATV is battery drain, which can leave your ATV unable to start when you need it most.
This problem often occurs due to factors like improper maintenance, leaving electrical components on, or a faulty charging system.
Causes
- Faulty charging system (alternator or regulator not working properly)
- Electrical components, like lights, left on after use
- Old or damaged battery losing charge over time
Fixes
- Check and replace a faulty alternator or regulator if needed
- Always turn off all electrical components when the ATV is not in use
- Test the battery regularly and replace it if it no longer holds a charge
7. Chain Slipping
If your Coleman 125cc ATV is experiencing chain slipping, it can affect performance and safety.
A loose or worn chain is often the main cause, and it may result from improper tension or regular wear over time.
Causes
The most common reasons for chain slipping include a stretched chain, worn sprockets, or improper alignment.
Dirt or debris stuck in the chain can also lead to slipping issues.
Fixes
To fix the chain slipping, start by checking and adjusting the chain tension. Replace the chain or sprockets if they are worn out.
Make sure the alignment is correct and clean the chain regularly to prevent debris buildup. Proper maintenance can help avoid future problems.
8. Overheating Engine
An overheating engine is a common issue with the Coleman 125cc ATV. If your ATV runs too hot, it can lead to serious damage or breakdowns.
This problem often happens during long rides or in hot weather, making it crucial to address quickly.
Causes:
- Low coolant levels
- Blocked radiator or cooling system
- Faulty thermostat or water pump
Fixes:
- Check and refill the coolant regularly
- Clean the radiator to remove dirt or debris
- Replace faulty parts like the thermostat or water pump
9. Transmission Issues
Transmission problems are a common concern with the Coleman 125cc ATV and can affect the ATV’s performance.
Symptoms may include difficulty shifting gears, slipping gears, or unusual noises coming from the transmission system.
These issues can result from wear and tear, poor maintenance, or incorrect gear usage during rides.
Causes
- Lack of proper lubrication in the transmission.
- Worn-out or damaged gears and parts.
- Misaligned or improperly adjusted gear levers.
Fixes
- Regularly check and refill the transmission oil as needed.
- Inspect and replace any damaged or worn-out gears.
- Adjust the gear lever alignment to ensure smooth shifts.
10. Fuel Blockages
Fuel blockages are a common issue that can cause your Coleman 125cc ATV to stall or struggle to start.
Blocked fuel lines or a clogged fuel filter can stop fuel from reaching the engine, leading to performance problems.
Causes
The main causes of fuel blockages include dirt, debris, or old fuel buildup in the fuel lines or filter.
Over time, these can restrict fuel flow and affect the ATV’s performance.
Fixes
To fix this, clean or replace the fuel filter and inspect the fuel lines for blockages.
Regular maintenance, like cleaning the fuel tank and using fresh fuel, can prevent this issue from happening in the future.
FAQs
How fast does a Coleman 125cc ATV go?
The top speed of a Coleman 125cc ATV is approximately 40-45 mph, depending on terrain and rider weight.
What is the weight limit for a 125cc ATV?
The weight limit for a Coleman 125cc ATV is generally around 220-250 lbs.
How to make Coleman AT125UT faster?
To make it faster, consider upgrading the sprockets, improving the airflow with a better air filter, or using higher-octane fuel.