How to Assemble a Mongoose Hardtail Mountain Bike

Get ready to take on the trails with your new Mongoose Switchback! It’s got everything you need for exciting off-road rides.

We’ll show you how to assemble your ride with the quick start guide below. Be sure to read it along with your Mongoose mountain bike owner’s manual. Both contain important safety information.

You’ll need the following tools:

• Scissors
• Lithium-based grease
• 5 mm hex key
• 6 mm hex key
• Phillips screwdriver
• 15 mm wrench
• Bike pump

Let’s get started!

Step1

Unbox the Bicycle

Take all bike parts out of the box and carefully remove packing materials.

Step 2

Install the Seatpost

Apply grease to the inside of the seat tube. Open the seatpost quick-release lever, then slide the seatpost into the frame. Ensure the seatpost is inserted past the minimum insertion line marked on the post. Align the nose of the seat with the frame of the bicycle. Close the seatpost quick-release lever.

Step 3

Install the Handlebar

Use a 5 mm hex key to remove the headset cap and set it aside. With a 6 mm hex key, loosen the side bolts and then slide on the stem. Replace the headset cap and tighten all bolts.

Step 4

Install the Front Wheel

In the box, locate the quick-release skewer, adjusting nut, two springs, and the quick-release lever.

Remove the adjusting nut and one spring. Insert the quick-release skewer through the front wheel axle, from the side opposite the brake disc. Reinstall the spring, narrow end first, and lightly tighten the adjusting nut.

Remove the disc brake pad spacer. Lift the front of the bike and roll the wheel back. Ensure the brake disc goes into the caliper, then lower the fork dropouts onto the axle. Tighten the adjusting nut and close the quick-release lever tightly enough that it leaves a clear imprint on your hand.

Step 5

Adjust and Tighten the Handlebar

Align the handlebar with the front wheel and fully tighten it by tightening the side bolts on the stem.

Tighten and position the front reflector using the Phillips screwdriver.

Step 6

Attach the Pedals 

Pedals are side-specific; match them to the corresponding crank arm using the stickers. Apply a small amount of grease to the pedal threads. Hand-thread and then tighten the pedals toward the front of the bike with the 15 mm wrench.

Step 7

Inflate the Tires

Inflate the tires to the recommended PSI printed on the side of the tire. Never exceed the recommended PSI.

Step 8

Do a Quick Safety Check

Push and pull on the handlebars and seat to make sure all parts are secure. Test the brakes to make sure they work. Finally, be sure to read your owner’s manual.

That’s it! Strap on your helmet, and you’re ready to ride.