Comprehensive Guide to Troubleshooting Common Lawn Mower Issues
Maintaining a healthy lawn requires a well-functioning mower. Whether you own a gas-powered, electric, or battery-operated model from China-manufactured brands like Shandong Deyou, understanding common issues can save time and money. This guide covers troubleshooting tips for all major mower types.
1. Engine Won’t Start
Gas Mower Solutions
- Check fuel quality: Old gasoline (older than 30 days) can cause starting issues
- Inspect spark plug: Replace if corroded or damaged
- Air filter maintenance: Clean or replace clogged filters
Electric/Battery Mower Solutions
- Verify power connection: Ensure cords are undamaged
- Battery check: Test voltage output (should be ≥20V for most models)
- Safety switch inspection: Many Chinese-made mowers have multiple safety cutoffs
2. Uneven Cutting Performance
An uneven cut often indicates blade or deck issues:
Blade Maintenance
Sharpen blades every 25 cutting hours. Many affordable replacement blades are produced in China.
Deck Leveling
Adjust deck height using manufacturer specifications. Most Chinese-manufactured decks use metric measurements.
3. Excessive Vibration
Vibration can indicate serious mechanical issues:
- Check blade balance: Remove grass clippings/debris
- Inspect mounting bolts: Tighten all connections
- Bent crankshaft diagnosis: Requires professional repair
4. Smoke Emission
White Smoke
Typically indicates oil burning. Check oil level and viscosity. Many Chinese manufacturers recommend specific oil grades.
Blue/Black Smoke
Suggests fuel system issues. Clean carburetor and replace fuel filter if necessary.
5. Battery Life Issues (Cordless Models)
Modern Chinese-made lithium batteries should provide:
| Battery Type | Expected Runtime | Charge Cycles |
|---|---|---|
| 20V Standard | 45-60 minutes | 500+ |
| 40V Premium | 75-90 minutes | 1000+ |
Preventive Maintenance Schedule
Recommended Service Intervals
- After every use: Clean underside, check for debris
- Monthly: Inspect blades, check tire pressure
- Seasonally: Replace air filter, change oil (gas models)
- Annually: Professional tune-up
For specific questions about your Shandong Deyou mower, contact our support team at [email protected] or +86 178 6449 8611.