Safety Precautions and Instructions for the Use of Garden Machinery

Safety Precautions and Instructions for the Use of Garden Machinery

There are a wide variety of garden machinery on the market, and the use and maintenance of these machines also constitute a considerable expense for garden units. The key points for using the machinery: safe operation, compliance with fuel/机油， daily cleaning, regular lubrication of vulnerable parts, and emptying the fuel for long-term storage, which can significantly reduce malfunctions and extend the lifespan. 

I. General Safety Usage Guidelines 

Personnel protection: Must wear tight-fitting long-sleeved long pants, reflective vests, safety helmets, safety harnesses (essential for high-altitude work), anti-slip safety shoes; wear goggles, dust masks, cut-resistant gloves; for noisy machinery (chainsaws, brush-cutting machines), earplugs should also be worn. 

2. Pre-operation inspection - Clearance: Remove hard objects such as stones, wires, and glass, and establish a restricted area. 

3. Fuel engine: Check the oil level / for any leakage, fuel quantity, air filter, blade/tongue tightness and sharpness, and the condition of the spark plugs. 

4. Electric model: Check the battery level. Ensure that the cables are undamaged and that the switches and protective devices are in good condition. 

5. Environmental Restrictions: Do not use in rainy conditions / when there is heavy fog / on slippery surfaces; do not use when the slope is greater than 25° (to prevent oil shortage and cylinder seizure); keep away from flammable and explosive substances. 

6. Operating principles: Proceed at a constant speed and do not exceed the load capacity; immediately stop the machine in case of abnormal conditions (unusual noise/overheating/oil leakage); for high-temperature operations, stop the machine every 45-60 minutes for cooling for 5-15 minutes. 

II. Key Points for Using Common Models 

1. Lawn mower (four-stroke) 

• Fuel: 90# or higher unleaded gasoline. The engine oil should be SAE 30 four-stroke specific; it is strictly prohibited to mix two-stroke engine oil. 

• Break-in period: The new machine should be idled for 2 hours during the break-in period. After changing the engine oil while the machine is hot, it can be used normally. 

• Operation: Linear movement at a constant speed, with the track overlapping by one-third; Wet grass is not mowed (to prevent clogging of the cutter disc). 

2. Hedge trimmer / Thicket cutter (two-stroke) 

• Fuel: Two-stroke specific engine oil mixed with gasoline in a certain ratio (commonly 1:50), using a dedicated mixing jug. 

• Operation: Keep both hands balanced and move at a steady speed; Do not use the knife tip to forcefully cut thick branches (>

1. After each use (must be done) 

• Cleaning: Remove all grass clippings, dirt and resin thoroughly; Remove rust from the blades/chains; Clean and dry the air filter (use a sponge for cleaning and gently blow with a paper towel). 

• Check for tightness: Check for any looseness or damage in the blades/chains, screws, and protective covers. 

• Lubrication: Apply special chain oil to the chainsaw chain; Grease the moving joints of the hedge trimmer/shear machine. 

2. Regular maintenance (based on working hours) 

• 20 hours: Check the spark plugs of the two-stroke engine (electrode gap 0.3mm, carbon deposits removed); Clean the air filter; Lubricate the bearings/gears. 

• 30 hours: Change engine oil for a four-stroke engine; Replace/clean the air filter; Check for blade wear, polish or replace. 

100 hours: Check/adjust valve clearance; Clean carburetor; Replace fuel filter; Check clutch/belt tension. 

• 250 hours / at the end of the season: Comprehensive maintenance; replacement of worn-out oil pipes/seals; gearbox oil change; anti-corrosion and rust prevention. 

3. Long-term storage (> 30 days, such as during winter) 

Clean thoroughly and dry completely. Apply a thin layer of oil on the metal surface to prevent rust. 

• Empty the fuel: Empty the fuel tank. Run the engine at idle speed to drain the remaining fuel from the fuel filter until the engine stops (to prevent carbon deposits from blocking the filter). 

• Four-stroke engine: Replace with clean engine oil (to prevent corrosion from old oil); Add 10ml of oil to the spark plug hole, pull the starting rope several times, then reinstall the spark plug. 

• Electric model: Once the battery is fully charged, remove it and store it in a cool and dry place; recharge it once every 1-2 months. 

• Storage environment: Place upright in a dry, cool, well-ventilated room, with a dust cover covering it. 

IV. Quick Troubleshooting of Common Faults 

1. Difficulty in starting: Insufficient/fatigued fuel; Excessive/insufficient engine oil; Clogged air filter; Carbon buildup on spark plugs/incorrect spark plug gap; Clogged carburetor. 

2. Insufficient power: Clogged air filter; Blocked fuel filter; Weak spark plug; Dull/uneven blades; Insufficient cylinder compression. 

3. Overheating: Overload; Heat sink blocked; Insufficient/contaminated engine oil; Incorrect fuel mixture ratio (two-stroke engine). 

4. Oil leakage/Seepage: Aging/Loosening of the oil pipe; Wear of the sealing parts; Loose oil tank cover; Fault of the float in the carburetor. 

V. Maintenance Tips 

Regularly check the engine oil and clean the filter; Clean daily to prevent corrosion. 

The screws are properly tightened and lubricated. Regularly change the oil and adjust the clearance. 

Fuel must be used in compliance with regulations and must not be mixed with other fuels. For long-term storage, the fuel tank should be emptied.