Pour out the fuel and impurities from the filter, and blow the filter screen from the outside to the inside with compressed air (or rinse with clean gasoline).
Check the filter screen for any damage or blockage, and reinstall it into the fuel tank (ensuring complete insertion).
Every 100 hours/6 months
Spark plug cleaning:
Open the spark plug inspection cover on the left side of the body and remove the spark plug cap (pull vertically upwards with force to avoid damage from side pulling).
Clean the dust and oil around the spark plug with a cloth, and use a spark plug socket wrench to unscrew the spark plug counterclockwise.
Check the spark plug: there are no cracks in the insulator and no excessive wear on the electrode; If there is carbon deposition, clean the electrode with a wire brush.
Adjust spark plug gap: Measure with a plug gauge, the gap is 0.6-0.7mm, and adjust by bending the grounding electrode.
Reinstall spark plug: Tighten clockwise by hand until it fits the cylinder head, then use a wrench to tighten (old spark plug by 1/8-1/4 turn, new spark plug by 1/2 turn, torque not exceeding 12Nm).
Insert the spark plug cap back in place, ensuring it is fully engaged, and close the maintenance cover.
Spark Arrester Cleaning:
Unscrew the 8 screws on the left muffler maintenance cover of the body and remove the maintenance cover.
Loosen the spark arrester clamp screw counterclockwise and remove the clamp and spark arrester filter.
Use a wire brush to remove carbon deposits and debris from the surface of the filter screen. If the filter screen is damaged or has holes, it needs to be replaced.
Reinstall the filter screen and clamp in place, tighten the screws, and reinstall the inspection cover.
Every 250 hours/1 year
Oil change (as before).
Spark plug replacement: Replace with recommended models (Torch A5RTC, NGK CR5HSA, etc.), and check the clearance before installing the new spark plug.
Fuel system cleaning:
Drain the fuel tank, remove the fuel filter, and thoroughly clean it.
Check the fuel pipeline for aging and leaks, and replace it if necessary.
Valve clearance inspection (professional maintenance): Operated by certified technicians or authorized dealers, adjust the valve clearance to the standard range (to avoid damaging the engine by self operation).
3. Long term storage and maintenance (over 3 months)
Preparation before storage:
Clean the surface of the generator, remove dust, oil stains, and debris.
Drain fuel:
Unscrew the fuel cap, remove the fuel filter, and use a siphon pump or directly pour out the fuel from the tank.
Open the fuel emission inspection cover (Phillips screwdriver), loosen the fuel emission screw (Phillips screwdriver), drain the residual fuel in the fuel pipeline, then tighten the emission screw and reinstall the inspection cover.
Reinstall the fuel filter and fuel cap, and close the fuel cap vent.
Oil change: According to the oil change process, drain the old oil and add new oil (400mL).
Anti rust treatment of cylinder:
Remove the spark plug and inject 1 tablespoon of new engine oil into the cylinder.
Pull the recoil starter handle 3-5 times by hand (without inserting the spark plug) to evenly distribute the engine oil on the cylinder wall.
Reinstall the spark plug and pull the starter lever until you feel an increase in resistance (piston in compression stroke, valve closed).
Cover with a dust cover and place in a dry, ventilated, and cool room (do not store in areas with flammable materials).
After storage, remove and use:
Remove the dust cover and check the appearance of the generator for any damage or debris.
Check the oil level of the machine and replenish it if it is insufficient.
Add fresh fuel (do not use fuel that has been stored for too long).
According to the normal start-up process, the engine may emit smoke for a short period of time (residual oil in the cylinder), which is a normal phenomenon and will disappear after running for 1 minute.
4. Maintain taboos and precautions
Do not use flammable solvents such as fuel or banana oil to clean components (such as air filters and machine bodies) to avoid causing fires.
Mixing different brands and models of engine oil is prohibited, and the use of two-stroke engine oil or inferior engine oil is also prohibited.
When replacing spark plugs, the recommended model must be used and the tightening torque should not be too high (to avoid damaging the cylinder head threads).
When cleaning the air filter, do not twist or tear the foam filter element, otherwise the filtering effect will be reduced.
After all maintenance operations, it is necessary to ensure that the components are securely installed and the screws are tightened to avoid detachment during operation.
Deep troubleshooting of common faults (including causes and solutions)
Possible causes of malfunction, troubleshooting steps, and solutions
The engine cannot start. 1. Insufficient oil (low oil protection); 2. Fuel depletion or deterioration; 3. The position of the air damper is incorrect; 4. Spark plug malfunction (carbon buildup, improper clearance, damage); 5. The fuel control switch is not turned on; 6. The fuel cap vent is closed; 7. Air filter blockage 1. Check the oil level of the machine and replenish it to the standard; 2. Check the fuel gauge and add fresh fuel; 3. Confirm the position of the air damper (cold engine START, hot engine RUN); 4. Remove the spark plug and check its condition; 5. Confirm that the fuel control switch is in the ON position; 6. Open the fuel cap vent; 7. Check if the air filter is clogged. 1. Add engine oil; 2. Replace with fresh fuel; 3. Adjust the position of the air damper; 4. Clean spark plugs, adjust clearances, or replace with new spark plugs; 5. Switch the fuel control switch to ON; 6. Unscrew the fuel cap vent; 7. Clean or replace the air filter
Email:wang@kongjiangauto.com