The possible malfunctions and solutions of the combined lawn mower flattening machine during operation are as follows:

1、 Cutting system malfunction

Blade breakage or wear

Reason: Encountering hard objects (such as stones, tree roots) during homework, or wear and tear of blades after long-term use.

Impact: Unclean cutting and unstable operation of the cutterhead.

Solution:

Replace broken or worn blades in a timely manner, ensuring that the blades are replaced in pairs to maintain balance.

Regularly polish the blades to maintain sharpness.

Clean up the site before homework to avoid hard objects damaging the blades.

Blade protector damaged

Reason: Deformation of the blade guard or inconsistent adjustment of the fixed blade, resulting in excessive clearance between the blade and the blade guard.

Impact: Decreased cutting efficiency, and even damage to the tool holder.

Solution:

Replace the damaged blade guard and correct the deformed blade holder.

Adjust the position of the fixed blade to ensure that the gap with the moving blade is between 0.2-0.4 millimeters.

The cutting blade connecting rod is damaged

Reason: Excessive resistance of the cutting blade or damage to the drive mechanism bearings (shock-absorbing rubber sleeves).

Impact: The cutting blade cannot move back and forth normally.

Solution:

Check the source of resistance of the cutting blade and clean any blockages.

Replace damaged bearings or shock absorber sleeves, and reinforce the connecting rod fixing screws.

2、 Flattening device malfunction

Improper adjustment of the gap between the flattening rollers

Reason: The gap between the rubber rollers is too large or too small, which affects the flattening effect.

Impact: Insufficient flattening of grass and prolonged drying time; Or excessive accumulation can lead to nutrient loss from forage.

Solution:

Adjust the gap between the rubber rollers according to the type of grass and humidity to ensure that the stems are crushed but not excessively damaged.

Regularly check the wear of rubber roller stripes and replace them in a timely manner.

Abnormal operation of flattening roller

Reason: Loose belt drive or stuck rubber roller.

Impact: The flattening roller cannot operate relative to each other normally, and the grass treatment is uneven.

Solution:

Adjust the belt tension to ensure stable power transmission.

Clean the surface debris of the rubber roller and check the lubrication condition of the bearing.

3、 Transmission and hydraulic system malfunction

Loose or broken drive belt

Reason: The drive belt has become loose after long-term use or has been subjected to unexpected tension during operation.

Impact: The speed of the cutting blade or flattening roller decreases, or even stops working.

Solution:

Adjust the tension of the drive belt to ensure a sinking of 1-1.5 centimeters (press down on the middle of the belt with a force of 150 Newtons).

Replace the broken drive belt and check the alignment of the drive wheels.

Hydraulic suspension system lacks lifting capability

Reason: Low hydraulic oil level, stuck main control valve, or faulty return valve.

Impact: The cutting table cannot be raised or lowered normally, which affects the efficiency of the operation.

Solution:

Check the hydraulic oil level and replenish it to the standard height.

Clean the main control valve and return valve, and replace the sealing gasket.

Lightly tap the distributor housing to return the stuck valve to its original position.

4、 Complete machine operation malfunction

violent shaking

Reason: Blade bending or wear, crankshaft bending, loose engine fixing screws.

Impact: The entire machine is unstable and prone to damage other components.

Solution:

Replace bent or worn blades and calibrate the crankshaft.

Tighten the engine fixing screws and check if the engine base is damaged.

The engine is not running smoothly

Reason: Improper throttle position, loose spark plug wire, clogged air filter.

Impact: The engine power decreases, and the efficiency of mowing and flattening decreases.

Solution:

Adjust the throttle switch to the appropriate position and firmly press the outer wire of the spark plug.

Clean or replace the air filter, and readjust the carburetor.

5、 Operation and maintenance suggestions

regular maintenance

Change the engine oil every 50 hours (25 hours in high temperature or dusty environments).

Clean the debris on the blades, blade protectors, and flattening rollers before homework.

Check the tightness of the drive belt, hydraulic oil level, and various components.

Spare parts preparation

Carry spare blades, drive belts, and commonly used vulnerable parts during homework for timely replacement.

Operating Specifications

Avoid working at high speeds on hard surfaces or complex terrains to reduce accidental impacts.

Adjust the height of the cutting table and the gap between the flattening rollers according to the height and density of the grass.