FAQs

1. Check the Oil
   LevelMake sure the oil level is correct. Too much or too little oil can prevent the mower from starting. After adding oil, always check the level with the dipstick.
   
2. Check the Starter Cable
   Ensure the starter cable connector is securely attached and has not come loose or fallen off.
   
3. Inspect the Spark Plug
   Confirm that the spark plug connection is secure and not loose.
   
4. Check for Engine Flooding
   If the engine has been started repeatedly, excess fuel or oil may prevent the spark plug from firing properly. Remove the air filter and let the mower sit for about 30 minutes to allow any excess fuel to evaporate.
   
5. Use the Primer Bulb
   When starting the engine for the first time, press and release the primer (ignition) bulb three times before pulling the starter cord.

1. Check the Oil Level
   Ensure the oil level is correct. Too much or too little oil can prevent the mower from starting. Use the dipstick to confirm the proper level after adding oil.
   
2. Check the Starter Cable
   Make sure the starter cable connector has not come loose or fallen off.
   
3. Inspect the Spark Plug
   Check if the spark plug connection is loose or carbonized. Carbon buildup can reduce ignition efficiency.
   
   For normal household use, carbon buildup is unlikely within 1–2 years unless poor-quality gasoline is used.
   
   Clean the spark plug with a suitable cleaner. If it cannot be cleaned and the product is still under warranty, we will send a replacement.
   
   
4. Check for Engine Flooding
   If the engine has been started repeatedly, it may be flooded with fuel, preventing the spark plug from firing. Let it sit for a while before trying again.
   
5. Inspect the Air Filter
   Remove the air filter and check if it’s wet with gasoline. If wet, dry the sponge in the sun and reinstall before starting. A wet filter blocks airflow and can cause stalling or starting issues. Contact us if you need a replacement filter.
   
6. Check the Carburetor
   If the mower hasn’t been used for a long time, gasoline may evaporate and form a gel that clogs the carburetor. Cleaning the carburetor may fix the problem.
   
7. Use the Primer Bulb
   When starting the engine for the first time, press and release the primer bulb three times to help the engine start more easily.
   

If the Engine Can Be Pulled but Won’t Start

Ignition Problems

• The spark plug may be faulty or have carbon buildup, which can affect ignition.
  
• Remove the spark plug and inspect it.If it’s dirty, clean the burnt areas with gasoline, or replace the spark plug if necessary.
  

Fuel Supply Issues

• Check that fuel is flowing smoothly from the tank to the carburetor.
  
• Ensure the fuel valve is open.
  
• Loosen the carburetor screw slightly to release a small amount of gasoline, which can help clean the carburetor.
  

Electrical Issues

• Confirm the kill switch (stop switch) is working properly and is in the correct starting position.
  

Low or No Oil

• Many engines have a low-oil sensor that prevents starting when oil is too low.
  
• Use the dipstick to check the oil level and add oil if needed.
  

Air Supply Problems

• A dirty air filter can block airflow and prevent starting.
  
• Remove the air filter and inspect it.
  
• Clean or replace the filter if necessary.
  

If the Engine Cannot Be Pulled at All

Starter Pull Assembly Failure

• Remove the starter assembly and pull the rope to check:
  
  Whether the rope can be pulled smoothly.
  
  Whether the pawls extend out properly.
  
  
• If either is abnormal, the starter assembly is faulty and should be replaced.
  

Engine Seized or Stuck

• The cylinder may be seized due to oil inside the cylinder or damage from running without enough oil.
  
• In this case, the engine will need repair or replacement.

Gasoline Overfilled

Some engine models have a fuel pipe connected to the air filter. If gasoline is filled too high, it can flow into the air filter through this pipe and cause leakage.

How to Fix It:

1. Avoid filling gasoline all the way to the top of the tank.
   
2. Open the air filter, remove the sponge, and let it dry in the sun.
   
3. Reinstall the dry filter element and restart the engine.
   

A wet filter blocks airflow into the cylinder and can prevent the engine from starting.

Loose Carburetor Screws

If the carburetor screws are loose, oil may leak. Loosen the oil drain bolt slightly and use the dipstick to check the oil level, draining any excess oil if needed.

Refer to your owner’s manual (drain bolt part number: 303020518) for guidance.

Seal Failure

If oil leaks even when the engine is off, the cause may be a faulty seal (such as bushings, O-rings, gaskets, or washers). These parts may need replacement to stop the leak.

Possible Causes and Solutions

For Horizontal Shaft Models (H Series):

• Damaged or Detached Belt – The drive belt may be broken or detached. Repair or replace as needed.
  
• Worn or Broken Tensioner Pulley – The pulley or its tension spring may be worn out or detached. Repair or replace these parts.
  
• Loose Blade – If the blade is loose and slipping against the blade holder, reinstall the blade and holder, then tighten the bolts securely.
  
• Broken Flat Key – A missing or broken flat key between the blade holder and engine output shaft prevents the engine from driving the blade. Replace the flat key.
  

For Vertical Shaft Models (R Series):

• Loose Blade – If the blade is loose and slipping on the holder, reinstall the blade and holder, and tighten the blade bolts securely.
  
• Broken Flat Key – A broken or missing flat key between the blade holder and engine output shaft can prevent the blade from turning. Replace the flat key.
  

1.Check the Drive Belt: Remove the belt cover located underneath the mower base and inspect the belt.
Make sure it is still intact and properly connected. (You can find a helpful video on Amazon.)
2.Inspect the Rear Wheels: Remove the rear wheels and check the internal transmission gears to see if they are damaged or worn out. 3.Possible Self-Propeller Issue: If both the belt and gears are fine, the issue is likely with the self-propeller itself. In that case, we will help you apply for repair or arrange a replacement.

A. Draining Gasoline: Disconnect the fuel line between the carburetor and the gas tank.

Remove the drain bolt at the bottom of the carburetor to release any leftover gasoline. If your carburetor is connected directly to the gas tank, the fuel in the tank will also drain out at the same time.

B. Draining Engine Oil: Unscrew the oil drain plug. Tilt the machine toward the drain plug side to let the oil flow out, or use a pump to extract the oil.

A. Draining Gasoline

1. Disconnect the fuel line between the carburetor and the gas tank.
   
2. Remove the drain bolt at the bottom of the carburetor to release any leftover gasoline.
   
3. If the carburetor is connected directly to the gas tank, the fuel in the tank will also drain out at the same time.
   

B. Draining Engine Oil

1. Unscrew the oil drain plug.
   
2. Tilt the machine toward the drain plug side to let the oil flow out, or use a pump to extract the oil.
   

Gas Cap Too Tight

If the gas cap is sealed too tightly, it can block fuel flow. Loosen the gas cap slightly and check if the mower starts.

Engine Is Hot

After emptying the grass bag, the engine may still be hot. Do not press the primer bulb when restarting. Doing so can flood the engine, making it harder to start.

We recommend using 5W-30 or 10W-30 oil in our products. Both are semi-synthetic oils that provide a good balance of performance and protection.

5W-30 Oil

• Best for very cold weather (down to -30°C / -22°F).
• Required for snow blowers toensure smooth starting and proper lubrication in winter.
  

10W-30 Oil

• Performs better in warmer conditions.
• Lower cold-weather performance compared to 5W-30.

For Lawn Mowers

• Either 5W-30 or 10W-30 can be used, depending on your local climate.