油加入进气道，摇车使其附着在活塞顶部、气缸套内壁及气门密封面上，置气门于关闭状态，使气缸套与外界隔开。

Oil is added to the intake port, and the engine is cranked to attach it to the top of the piston, the inner wall of the cylinder liner, and the valve sealing surface. The valve is placed in a closed state to isolate the cylinder liner from the outside.

当确定沼气发动机要长时间不用的时候，我们要尽量放掉冷却水和润滑油。让沼气发电机组干干净净的。

When determining that the biogas engine will not be used for a long time, we should try to drain off cooling water and lubricating oil. Keep the biogas generator unit clean.

将空气滤清器、排气管及油箱覆盖，以免灰尘落入。

Cover the air filter, exhaust pipe, and oil tank to prevent dust from falling.

要保障发动机组干干净净的。除去表面的尘土和油污。

Ensure that the engine set is clean. Remove dust and oil from the surface.

拆下沼气发动机气门室盖，用刷子沾少量无水机油，刷在摇臂等到零件上。

Remove the valve cover of the biogas engine, dip a small amount of anhydrous engine oil with a brush, and brush it on the rocker arm and other parts.

沼气发动机应放在通风良好、干燥清洁的地方。严禁与化学药品（如化肥、农药等）存放一处。

The biogas engine should be placed in a well ventilated, dry and clean place. It is strictly prohibited to store chemicals (such as fertilizers, pesticides, etc.) together.