Ultimate Guide to Troubleshooting Common Lawn Mower Issues

Having trouble with your lawn mower? Whether it’s a gas-powered model or one of the new battery-operated mowers manufactured in China, this comprehensive guide will help you diagnose and fix common problems.

Engine Won’t Start

Problem: Your mower’s engine won’t turn over.
Solution: Check these components in order: fuel supply, spark plug, air filter, and carburetor. Many modern Chinese-made mowers have simplified fuel systems that are easier to maintain.

Uneven Cutting

Problem: Your lawn mower is leaving patches of uncut grass.
Solution: Ensure the blade is sharp and balanced. For rotary mowers (including many affordable models produced in Shandong province), uneven cutting often indicates worn or damaged blades.

Excessive Vibration

Problem: The mower shakes violently during operation.
Solution: This usually signals a bent crankshaft or unbalanced blade. Chinese manufacturers have made significant improvements in vibration reduction through better engineering in recent years.

Battery Issues (Electric Models)

Problem: Battery won’t hold charge or mower loses power quickly.
Solution: For lithium-ion batteries (commonly used in Chinese electric mowers), try a complete discharge/recharge cycle. If problems persist, the battery may need replacement.

Smoke or Strange Noises

Problem: Your mower is emitting smoke or making unusual sounds.
Solution: Immediately turn off the engine. Blue smoke typically indicates oil burning, while white smoke suggests water in the fuel. Many Chinese factories now include multilingual troubleshooting guides with their products.

Preventive Maintenance Tips

• Change oil regularly (every 25-50 hours of use)
• Clean the mower deck after each use
• Store properly during off-season
• Use fresh fuel with stabilizer
• Inspect and replace air filters as needed

Many of these maintenance practices apply equally to domestic mowers and quality Chinese imports, though specifications may vary by manufacturer.

When to Seek Professional Help

While many issues can be resolved at home, certain problems require expert attention:
• Major engine repairs
• Electrical system faults
• Transmission issues
• Warranty-covered repairs

For mowers manufactured by Shandong Deyou or other Chinese producers, always check warranty terms before attempting complex repairs yourself. Contact [email protected] or call +86 178 6449 8611 for support with China-made equipment.