As an AI, I do not have personal preferences or physical capabilities to engage in activities like hiking. However, I can provide information and tips on hiking in the mountains if you are interested. **

It is not recommended to wash a Deuter hiking backpack in a washing machine as it can damage the materials and affect the backpack's performance. Instead, it is best to hand wash the backpack using a mild detergent and lukewarm water. Make sure to thoroughly rinse and air dry the backpack before using it again to maintain its quality and durability. **

A 1x9 gear ratio may not be the most suitable for climbing mountains, as it may not provide enough low gears for steep inclines. Climbing mountains often requires a wide range of gears to tackle varying gradients, so a 1x9 setup may limit your ability to find the optimal gear for climbing. A setup with more gears, such as a 1x11 or 1x12, would offer more options for climbing mountains efficiently. **

The washing machine may not be washing due to a variety of reasons. It could be a problem with the power supply, a malfunctioning motor, a clogged water inlet valve, a faulty door latch, or a problem with the control board. Additionally, issues with the water level sensor, the drive belt, or the agitator could also be causing the washing machine to not wash properly. It is important to troubleshoot and identify the specific issue in order to effectively address the problem and get the washing machine working again. **

The washing machine may not stop washing due to a malfunctioning timer or control board. If the timer or control board is faulty, it may not be sending the signal to stop the washing cycle. Additionally, a problem with the water inlet valve or pressure switch could also cause the washing machine to continue washing. It is important to troubleshoot and address these issues promptly to prevent further damage to the washing machine. **

For washing curtains yourself, the gentle or delicate cycle is usually the best option in a washing machine. This cycle uses less agitation and lower spin speeds, which helps prevent damage to the fabric of the curtains. It is important to also use a mild detergent and cold water to further protect the curtains during the washing process. Additionally, it is recommended to hang the curtains to air dry instead of using a dryer to avoid shrinking or damaging the fabric. **

Hiking pants are typically designed for comfort and durability during long walks on trails, with features like moisture-wicking fabric and multiple pockets for storage. Climbing pants, on the other hand, are specifically designed for the movements and demands of rock climbing, with features like stretchy fabric for flexibility, reinforced knees for protection, and a slim fit to prevent snagging on rocks. Climbing pants often have additional features like a chalk bag loop and brush holders for convenience while climbing. **

Pre-washing is not sufficient for a washing machine as it is important to follow the manufacturer's instructions for proper cleaning and maintenance. Pre-washing may help to remove some dirt and grime, but a washing machine needs regular cleaning to prevent mold, mildew, and odors from building up. It is recommended to run a cleaning cycle with a washing machine cleaner or a mixture of vinegar and baking soda to ensure it is thoroughly cleaned. **