How to Maintain a Remote Control Lawn Mower Engine?

The remote controlled lawn mower is equipped with straight metal blades and can be precisely operated from a remote control distance of up to 200 meters. While significantly improving the efficiency of lawn mowing, it also ensures the safety of personnel. For this reason, to ensure that its core - the engine - can continuously and stably output excellent performance and extend its service life, regular inspection, adjustment and maintenance are of vital importance. The following are some basic maintenance measures:

Maintenance should be performed according to the indicated months or actual operating hours, whichever comes first.

Note: Turn off the engine before performing any maintenance. The engine should be serviced by a professional.

1. Engine diagram

Engine diagram (The above pictures are for reference only, please refer to the actual product for details)

Note: The oil tank expansion modification in the above figure has been removed, please refer to the actual product for details

2. Engine oil check

• Stop the remote control lawn mower engine and check the engine oil level in a horizontal position.

• Unscrew the engine oil dipstick and wipe it clean.

• Insert the dipstick into the oil filler neck (do not screw it in), take it out and check the oil level.

• Remove the dipstick and check the oil level. The oil level is normal within the 1/2 mark of the dipstick grid.

Oil check diagram (The above pictures are for reference only, please refer to the actual product for details)

Note: Before using the engine, add lubricating oil to the normal oil level according to the engine instructions. Check every 4 hours. If the oil level is lower than the normal state when using the engine, it will cause serious damage to the engine!

3. Engine oil change

• Start the remote control mower engine and heat the oil slightly before draining it. This will ensure that it is drained quickly and thoroughly (for engines with oil filters, replace the oil filter at the same time).

• Unscrew the oil filler cap and drain plug to drain the lubricating oil.

• Reinstall the drain plug and tighten it.

• Re-add the recommended lubricating oil and check the oil level.

• Tighten the oil filler cap to complete the replacement.

Oil check diagram (The above pictures are for reference only, please refer to the actual product for details)

4. Air filter cleaning

• Press the latch on the air filter cover or remove the cover nut to open the air filter cover

• Check the filter to ensure it is clean and in good condition.

• Remove the wing nut and air filter cover, and take out the filter element.

• Blow the dust off the filter element with compressed air. Never try to brush off dirt. A brush will force dirt into the fibers.

• Reinstall the air filter and air filter housing.

Air filter disassembly diagram (the above pictures are for reference only, please refer to the actual product)

Note: Too much dust or moisture in the air filter element will prevent air from entering the carburetor, causing the engine to smoke and damage the engine. The air filter should be maintained regularly. If the lawn mower engine is running in a very dusty area, it must be cleaned every 2 hours.

5. Spark Plug Cleaning

• Replace the spark plug with a spark plug socket wrench.

• Visually inspect the spark plug, and replace it if it is obviously worn or the insulator is cracked or damaged.

• Use a feeler gauge to measure the spark gap. If adjustment is needed, turn the electrode. The correct gap should be 0.70-0.80 mm.

• Check that the spark plug washer is in good condition, and screw it in by hand first to prevent the screw from being misaligned.

• After the spark plug is screwed to the bottom, tighten it with a special socket wrench to compress the washer.

Spark Plug Diagram (The above pictures are for reference only, please refer to the actual product)

Note: When installing a new spark plug, tighten it an additional 1/2 turn after compressing the washer. When reinstalling a used spark plug, tighten it an additional 1/8-1/4 turn after compressing the washer. If the engine has just been running and the muffler is hot, wait until it cools down before operating.

6. Carburetor Idle Adjustment

• Start the remote control lawn mower engine and let it warm up to normal temperature.

• While the engine is idling, adjust the throttle stop screw to obtain the standard idle speed, which is: 1500+150 rpm/min.

The maintenance of the engine of a remote controlled lawn mower is of vital importance. I hope the above suggestions can be of help to you. Manda Intelligent has long been deeply engaged in the field of lawn mowers. The remote control lawn mower offers three lawn cutting widths to choose from: 550, 800, and 900mm, and the cutting height can be adjusted within the range of 20mm to 150mm.  It not only provides customized solutions such as RTK and laser navigation, but also supports the installation of accessories like snow plows and brackets to achieve multi-purpose use with one machine, fully meeting your application needs in different scenarios.