5 Yamaha Moto 4 Common Problems– Easy Fixes Added

The Yamaha Moto 4 are a very solid, capable machine. But some of them have been through the wringer and back, and often require only minor repairs to get them in good riding condition.

Although the number of problems is on the lower side, they are not non-existent. Starting problems, problems idling, suspension, electrical and braking are quite common Yamaha Moto 4 common problems.

In this article, you will find all the dirt and good on Yamaha Moto 4 and their fixes too. So read till the end! 

Yamaha Moto 4 Common Problems

One of the most common complaints about the Yamaha Moto 4 is that replacement parts for older models can be difficult to find. 

Repairing the frequent engine and transmission problems can be costly too. It is possible that the ATV will be out of commission for an extended period of time as a result of this.

Furthermore, starting issues with these ATVs are common.

However, the most common issues with the Yamaha Moto 4 are discussed below:

Common Problems of Yamaha Moto 4

1. ATV Won’t Start

From some of the users, we’ve heard that sometimes their Yamaha Moto 4 engine cranks but won’t start, or sometimes starts but stalls immediately.

It will require several attempts to start. Also, it runs rough or has poor acceleration.


Check the fuel tank for fuel and ensure it’s clean and not contaminated with water or debris. Then inspect the spark plug and clean or replace it if necessary.

Make sure to check the carburetor for clogs or buildup. Inspect the air filter. Finally, inspect the ignition system and wiring for any damages or loose connections.

Also, spray some starting fluid into the carburetor. 

2. Transmission Shifting Problem

In Yamaha Moto 4 ATV, there’s usually difficulty in shifting gears or shifting gears abruptly. Sometimes the transmission slips and disengages. 

You may also hear grinding or clicking noises when trying to shift gears. The vehicle may jump forward when shifting gears


The first step is to inspect the transmission fluid level and condition. Check for dirt or grime. 

If the transmission fluid is low or dirty, change or top off the fluid as needed. Replace any worn-out components. 

Next, ensure that the shift linkage and shifter mechanism are in good working order. 

Finally check for worn gears, bearings, or synchros in the transmission.

3. Suspension Problem

More often, the suspension of the Yamaha Moto 4 feels stiff and unresponsive when riding over bumps or rough terrain.


Check the shocks, springs, bushings and bearings for leaks or damage. If there is oil or debris on the shocks, they may need to be replaced.

Replace the leaking shocks, worn-out bushes and bearings, as well as switch to a stiffer spring.

4. Electrical Problem

The Yamaha Moto 4 may not start due to electrical reasons as well. You will notice the battery dying and the headlights not working.

The engine stalling or misfiring is a common symptom of this problem. 

Check for bad battery connections and a faulty starter solenoid or starter motor. Also, check for a bad spark plug or spark plug wires.

A blown fuse or bad relay or a faulty ignition switch or key may also be the reason. Another common but overlooked cause is a bad stator or voltage regulator


Replace the battery or clean the battery connections. Replace the starter solenoid or starter motor if they have gone bad.

Also, take care of bad spark plugs, spark plug wires, blown fuses or bad relays.

Replace the ignition switch or key, the stator or the voltage regulator if they have gone bad. 

5. Braking Problem

Often times the Yamaha Moto 4 does not engage the brakes properly. You may also hear ungodly noises. 

Check for worn or damaged brake pads, the air in the brake lines, faulty brake calliper or master cylinder or warped brake rotors.

Visual inspection is the key. 


Replace worn or damaged brake pads with new ones. If there is air in the brake lines, bleed the brake lines to remove those.

Replace faulty brake calliper or master cylinder and warped brake rotors.

Which Year Yamaha Moto 4 Has the Most Problems?

The most problems have been reported with Yamaha Moto 4 models manufactured between 1987 and 1995. 

One of the most common complaints from Moto 4 owners is that the engine overheats and loses power. 

Some of Yamaha Moto 4 common problems exhibit transmission issues, such as difficulty shifting gears and excessive noise.

Warranty and Recalls for Yamaha Moto 4

The Yamaha Moto 4 comes standard with a one-year limited warranty. But you can also purchase the extended warranty, which is preferable.

The warranty covers material and workmanship defects under normal use and service. But it does not cover any repairs or replacements that are required to correct these flaws. 

However, even the extended warranty will not cover the unauthorized repairs. The warranty does not cover damage caused by accidents, misuse, or poor maintenance.

However, Yamaha recalled certain Yamaha Raptor and Yamaha Grizzly models, including some Moto 4 models, in 2019. 

There was a problem with the vehicle’s gear shifter, causing it to shift gears unexpectedly. This would pose a crash hazard.

However, Yamaha offered affected customers free repairs.

Frequently Asked Questions (FAQs)

What is the fuel capacity of the Yamaha Moto 4?

It varies depending on the model, but most have a fuel capacity of around 2.5 to 3.0 gallons.

What is the top speed of the Yamaha Moto 4?

Around 45-50 mph.

What is the spark plug gap on a Yamaha Moto 4 225?

It’s “0.028”.


The Yamaha Moto 4 is a great ATV. I love its durability and smooth ride. However, sometimes I have also experienced some problems with this ATV.

These are the most common problems of the Yamaha Moto 4.

  1. Won’t start
  2. Transmission shifting problem
  3. Suspension problem
  4. Electrical problem
  5. Brakes problem

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