# Six Key Points for Carefully Selecting a High-Quality Walk-Behind Tractor

1. Power and Compatibility Engine Type: Prioritize diesel or gasoline engines from well-known brands (such as Honda, Zongshen, Loncin). Diesel engines are more durable and offer high torque, making them suitable for hard ground or large-field operations; gasoline engines are quieter and suitable for small plots. Power Matching: For small plots of 0.5-1.2 mu, 3-5 horsepower is sufficient; for areas over 5 mu or hard soil, 8-12 horsepower is recommended. Insufficient power easily leads to overload, while excessive power wastes fuel. Starting Method: Electric start is convenient but costly; manual pull start is economical but requires physical effort. Choose according to budget and needs. 2. Transmission System and Tillage Efficiency Gearbox Material: All-steel gears are more durable than cast iron. Check for oil seepage traces (a common problem in used machines). Transmission Method: Chain drive is easy to maintain but prone to loosening; gear drive is highly efficient but costly to repair; belt drive is suitable for light loads but requires frequent adjustment. Gear Design: At least 2 forward gears + 1 reverse gear. Multiple gears adapt to different soil conditions (e.g., low gear for land clearing, high gear for rotary tillage). 3. Key Component Materials and Craftsmanship Blade Material: Manganese steel or No. 65 steel heat-treated blades offer better wear resistance. Observe blade thickness (≥6mm is preferable). Frame Structure: Rectangular steel tubing is more resistant to deformation than angle steel. Welds should be smooth and free of cracks. Bearing Sealing: Check whether bearing areas have double-sided oil seals to prevent soil ingress (brands like Luoyang Bearing are more reliable). 4. Applicability and Multifunctional Expansion Compatible Implements: Confirm whether it supports attachments such as ditchers, ridgers, and weeding wheels, and whether the interface is standardized (e.g., national standard three-point hitch). Wheel Track Adjustment: Adjustable wheel track (typically 60-90cm) adapts to different crop row spacings and avoids crushing seedlings. Tillage Depth: The adjustment lever should be flexible. Deep-tillage models should reach 25cm or more (standard models 15-20cm). 5. Safety and User-Friendly Design Protective Devices: Belts/chains must have fully enclosed guards. The emergency kill switch must be responsive. Operating Comfort: Features shock-absorbing handles (rubber-wrapped) and height-adjustable armrests (to accommodate different heights). Center of Gravity Design: Too low a center of gravity affects passability; too high makes it prone to rollover. During testing, check slope stability (recommended: no rollover at ≤15° tilt). 6. Brand and After-Sales Service Market Reputation: Check user reviews on platforms such as Nongji 360, focusing on failure rates (e.g., gearbox failure rate <5% within 3 years is excellent). Service Network: Ensure a repair point within 50 kilometers and parts supply cycle (common parts delivered within 3 days). Warranty Policy: Engine at least 2 years, whole machine 1 year warranty. Keep complete receipts. Additional Tip: Pre-Purchase Testing Checklist No-Load Test: Run at idle for 5 minutes. Observe for abnormal noise or oil leaks. Load Test: Perform actual tillage for 10 minutes. Check whether the clutch slips or black smoke is emitted (incomplete combustion). Steering Test: Check whether single-side brake turning is responsive and whether the differential locks up.