Introduction: Changing Rear Sprockets on WR250R

This is an overview on how to remove the rear sprocket along a wr250r to change the gear ratio. I started with a 12 tooth in advance and 48 tooth rear which is a great ratio for off road. My bicycle is my commuter horse so  I penury a practically more street able ratio. Thence this instructable. Also, it is NOT obligatory to variety both front and rear sprockets. I recommend replacing both gears and mountain chain as a rig

Step 1: Changing Rear Sprockets on WR250R

First step is to lift the cycle using a buddy operating theater brute force. Place a sturdy pulley-block or bucket under subframe. ( Or use a motorcycle lift if you wish).

Footprint 2: Changing Rear Sprockets connected WR250R

Next move out axle nut and remove axle.

Step 3: Changing Rise up Sprockets on WR250R

 Now get rid of the adjuster blocks.
First you loosen the operate nut, which is a twelve millimeter on this particular bike. You loosen this up and the same matter along the other side. Then you'll grow the actual adjustment screw or make off, and if information technology's too loose then you need to go backward with the bolt. If it's too tight, and so you need to go forward with the make off.

Step 4:

Remove the drive sprocket. Depending happening your bike you may need to naked the peened part of the nut to absent.

Step 5:

Install new sprocket on output shaft. Also information technology is a good idea to practice thread lock.

Step 6: Changing Nates Sprockets on WR250R

Place a opus or cardboard or towel on floor, and rest tire along floor. Using a act 12 wrench and  Allen wrench,remove bolts connected sprocket.

Step 7: Ever-changing Rear Sprockets on WR250R

Depending on the size of your sprocket option & length of chain, you power need to add a unite to your chain. In this case I replaced the chain on with the sprockets. There are many references on the web that will direct you to the right combinations.

Step 8: Changing Rear Sprockets on WR250R

Ahead re-assembly, make sure to compress bum brake calliper pistons to allow the rotor to accommodate back in the caliper. Using an quondam brake pad or piece of flat tire metal, compress with a c clamp operating theatre duct lock pair of pliers.

Footmark 9: Dynamical Rear Sprockets on WR250R

Once the new sprockets and chain are reinstalled, array rear wheel and reinstall axle.

Gradation 10: Changing Fundament Sprockets on WR250R

Now it is time for chain adjustment. This is a very world-shattering step and you must economic consumption the revised  procedure from Yamaha

Step 11: Dynamic Rise up Sprockets on WR250R

At this step constrain axle nut and check for tight spotss in your chain. If you don't suffer any, it is good. If you find binding Re-adjust. Formerly good you are ruined!
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