Cleaning and lubing your mountain bike is an essential routine maintenance procedure that can prolong the life of your bike and enhance its performance. To clean your bike, you need to rinse it with clean water, use a bike-specific cleaning detergent to wash your bike, scrub the chain, cassette, and derailleur with a brush, rinse again, and dry with a towel. After cleaning, you can apply lube to the chain, derailleur, and cassette to reduce friction and prevent wear. Make sure you use the appropriate type of lube for your bike’s conditions, and wipe off any excess lube after application.

To do jumps on a mountain bike, start by approaching the jump at a moderate to high speed and standing up on your pedals. As you approach the jump, bend your knees and use your arms to lift your front wheel up, then quickly extend your legs to launch your bike off the jump. While in the air, keep your weight centered over the bike and use your arms and legs to adjust your balance. Land smoothly on both wheels and bend your knees to absorb the impact. Practice on smaller jumps before moving on to larger ones.

A good cheap mountain bike is a highly functional and durable bike that comes with a reasonable price tag. It should be made of lightweight, sturdy materials, and have a reliable gear system, efficient suspension, and responsive brakes. Additionally, a good cheap mountain bike should be comfortable to ride and able to handle different terrains and conditions, making it suitable for both beginners and experienced mountain bikers.

To check if a mountain bike is stolen, you can start by checking the serial number of the bike. You can look for it on the frame, and then search online databases like Bike Index or National Bike Registry. If the bike has been reported as stolen, the authorities will have a record of it, and you can contact them to return the bike to its rightful owner. Additionally, you can ask the seller for proof of purchase or any other documentation that proves the bike is legitimately theirs.