1. Choose the right detergent
When using a manual washing machine, it is critical to choose the right detergent. Manual washing machines usually do not have the strong stirring function of electric washing machines, so the detergent needs to be easily soluble and low in foam. Excessive foam is not only difficult to clean, but also affects manual operation and increases the difficulty of rinsing. Therefore, it is recommended to use detergents designed specifically for hand washing, or to reduce the amount of conventional detergents when using them. In addition, avoid using detergents containing strong chemical ingredients. Although such detergents can quickly remove dirt, they are more damaging to clothing fibers and are prone to irritation to the skin. Choosing mild and environmentally friendly detergents can not only better protect clothing, but also be more environmentally friendly.

2. Washing volume and water volume control
The capacity of manual washing machines is usually small, and putting too much clothing in at one time will affect the washing effect. Therefore, when using a manual washing machine, it is necessary to reasonably control the number of clothes washed each time to ensure that the clothes can move freely in the washing tank to achieve better washing results. It is also important to control the amount of water. Too much water will waste resources, and too little water will not be able to effectively wash clothes. According to the number and material of clothes, add water in an appropriate amount to ensure that the clothes can be fully soaked and effectively washed. At the same time, pay attention to the control of water temperature. Excessive water temperature may damage clothing fibers, especially some fabrics that are easy to shrink or fade, while moderate water temperature can not only effectively remove stains, but also protect clothing.

3. Clothing classification and pretreatment
Before using a manual washing machine, classify the clothes by color and material. This is an important step to effectively avoid clothing staining and damage. Washing dark and light clothes separately can prevent staining problems. In addition, using different washing methods for clothes of different materials can also extend the service life of clothes. For some stubborn stains, it is recommended to pretreat before formal washing. For example, detergent can be applied to the stains, gently rubbed and then soaked, which can improve the washing effect. Pretreatment can not only better remove stains, but also reduce the washing pressure during the main wash.

4. Operation methods and skills
The operation of a manual washing machine requires certain skills. Mastering the correct operation method can improve the washing effect. Usually, a manual washing machine washes clothes by manually stirring, rolling or shaking. When washing, you should apply force evenly to ensure that all clothes can be washed with enough force, especially those thicker and dirtier parts. Avoid excessive force to avoid damaging the clothing fibers. You can use the method of segmented washing, first deal with the dirtier clothes, then wash the cleaner clothes, to ensure that the washing process is efficient and does not waste energy. At the same time, arrange the washing time reasonably. Clothes of different materials and stains require different washing times. Through practical operations, gradually accumulate experience and find the best washing method.

5. Washing time and frequency
Reasonable control of washing time and frequency is the key to using a manual washing machine. According to the degree of dirtiness and material of the clothes, adjusting the washing time can effectively improve the washing effect. Generally speaking, clothes with light stains do not need to be washed for a long time, while heavy stains require longer washing and soaking. In addition, frequent washing will accelerate the wear of clothes. It is recommended to wash clothes when they really need to be washed. For clothes worn daily, you can choose to wash them once every few days, while for some special materials or clothes that are not often worn, you can extend the washing cycle. Reasonable arrangement of washing time and frequency can not only save time and water resources, but also effectively protect clothes and extend their service life.

6. Drainage and rinsing
After washing, thorough drainage and rinsing are key steps to ensure that clothes are clean. Manual washing machines usually do not have an automatic drainage function and need to manually dump waste water. Make sure that each drainage is thorough to avoid residual detergent affecting the next wash. When rinsing, you can rinse the clothes with clean water several times until the water becomes clear. This not only ensures that the detergent residue is completely removed, but also avoids irritation and allergies to the skin. During the rinsing process, gently stir the clothes to help the detergent residue dissolve and drain. Reasonable control of the number of rinsing and water consumption can not only ensure the cleaning effect, but also save water resources.

7. Safe operation and protection
When using a manual washing machine, it is very important to pay attention to safe operation. First, make sure that your fingers and clothes will not be entangled inside the machine. Before use, check whether the various parts of the machine are intact to avoid safety problems caused by loose or damaged parts. Secondly, keep the outside of the machine and the surrounding environment dry to prevent slipping or electrical failures. Especially during drainage and rinsing, pay attention to prevent water splashing and causing the ground to be slippery. Finally, store detergents and other cleaning supplies properly to avoid children's contact. Safe operation not only protects the safety of users, but also extends the service life of the machine.