Removal of sprocket and gears from rear tire for replacement

take a look at the videos.

How do grease the bearings on an mongoose xr 75 Google Search

You don't hook up a sprocket to a disc brake! If you mean how to mount the rear gear cluster (freewheel) on a rear wheel, a special tool is required to remove the old one, then you just screw on the new one by hand. If you mean something else then you need to explain more clearly or provide some pics.

The proper term for that bearing is the headset, the procedure is called overhaul, and it is not not brand-specific. I suggest you go to parktool.com or sheldonbrown.com and look up how to overhaul a headset. There are different types of headsets, so you will need ot make sure you are referring to the proper one for your bike. AFTER you understand written instructions from a reputable site YouTube videos can be useful in showing you how the procedure looks. Bikeforums.net is also a good resource if you get stuck.

Sorry about the request for more info about the bike I did not see the small print right above the How do I.

Anyway this link should help...I hope
26 Women Mongoose XR 75 Dual Suspension Bike


Personally, here in AUS bikes brought from Wallmart type department stores are very general purpose, meaning not professional, so the price doesn't hold in fact depreciates quite quickly so if you want to know for selling purposes than ask google, eBay, Amazon with words like used whether or not it has been, like unwanted gifts.

If I had to guess I'de say anywhere between $60 and $90 at best, but please feel free to do your own investigation and good luck.

clean your garage and you will have it. or try bike shops.

Change the spring to your load.

Adjust Mozo M30 Fork Suspension - Beckman Du-70 Forum

efratoium.xyz/Adjust-Mozo-m30-fork-suspension/

Results 1 - 15 of 15 - Mongoose XR 150 mozo m30 front forks rebuild. A quick ...Mongoose mozo m30 forks are sponggy on my XR150 mongoose mountain bike.

mozo??- Mtbr.com

forums.mtbr.com/shocks-suspension/mozo-167281.html

Feb 20, 2006 - 15 posts - ‎6 authors
... of a mozo m30? is it the junk im assuming came on my mongoose? ... into a halfway decent bike. and all i can get off the fork is mozo m30 ...

Mongoose XR250 Suspension Upgrades ' Bicycling Magazine Forums

forums.bicycling.com/topic/54635607127666779

I am sorry I could not find a manual for your Mongoose.
I will suggest you go to the following website
http://www.youtube.com/watch?v=2j1gSwhsVN8
You can find numerous videos for your bike repair.
in Youtube
Bud

To remove any rear freewheel or cassette you will need to purchase a Park Tool. Park Tool is the best brand when it comes to bike repair. Google Park Tool and you can look through their products. You will need a cassette/freewheel remover. There are dozens of different companies that make hubs and cassettes (gear sprocket). Take a look at yours and see what company made it. You can than find out which tool with properly fit your cassette. These tools are made to fit in a wrench making hand removal easy. Some brands will require a chain whip. The only way you will know which too you need is by find the company name on the cassette/hub. Without this tool removal is virtually impossible. If you need help narrowing down which cassette remover you need you can always let me know the company name and I will let you know the proper cassette tool to purchase.

Mongoose didn't make the chainring. They're generic (like most bike parts) and have many substitutes. Determine the parameters and then go looking for one that fits.

http://www.sheldonbrown.com/gloss_bo-z.html

Other parts may also be worn, like the chain.

http://www.sheldonbrown.com/chains.html

Take this "how do i adjust the gears" to a standard search engine for instant video advice.