Going 15/43 ... and the chain ? - Kawasaki Ninja 250R Forum
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Old 03-05-2013, 10:04 PM
GreenNinja250R GreenNinja250R is offline
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Default Going 15/43 ... and the chain ?

Plan on swapping sprockets from stock 14/45 to 15/43.

Do i need to disconnect the chain, or just loosen the tensioners?
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Old 03-05-2013, 10:34 PM
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DaBlue1 DaBlue1 is offline
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Take off the shift lever link and front sprocket cover. make sure you mark how the shift link comes off. Loosen the axle nut and chain tensioners all the way. You will have to push the wheel forward a bit. When you put it back on with the new sprockets, it will move back a little bit from it's original point on the swingarm.
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Old 03-08-2013, 09:41 PM
GreenNinja250R GreenNinja250R is offline
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Thanks, DaBlue1!

Is it better to remove the front sprocket's nut, before or after removing the chain?

I'm thinking ( as if this is a car) of removing that nut while it's still "in gear", so the sprocket won't keep spinning while I'm trying to loosen that nut.

Oh, what are the torque specs on them?

Last edited by GreenNinja250R; 03-08-2013 at 09:42 PM.
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Old 03-09-2013, 06:27 AM
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DaBlue1 DaBlue1 is offline
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Originally Posted by GreenNinja250R View Post
.....Is it better to remove the front sprocket's nut, before or after removing the chain?

I'm thinking ( as if this is a car) of removing that nut while it's still "in gear", so the sprocket won't keep spinning while I'm trying to loosen that nut.

Oh, what are the torque specs on them?
Some have found it easier to remove the front sprocket before removing the chain. You can also use thee rear brake or a 2x4 laid across /under the swingarm and thru the rim. This keeps the engine from turning if the nut is too tight. Having an extra person to help is recommended.

Wheels/Tires- Nm / kgfm/ ftlb

Front Axle Nut- 88/ 9.0 / 65
Rear Axle Nut- 98/ 10.0 / 72

Final Drive
Engine Sprocket Cover Bolts- 9.8 / 1.0 / 87 inlb
Engine Sprocket Nut- 127 / 13 / 94
Rear Sprocket Nuts- 59 / 6.0 / 44

Shift Lever Link Bolt- 12 / 1.2 / 104 inlb
Front Tie-Rod Locknut (LH Threads)- 7.0 / 0.7 / 62 inlb
Rear Tie-Rod Locknut (RH Threads)- 7.0 / 0.7 / 62 inlb
Shift Pedal Mounting Bolt- 25 / 2.5 / 18
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