How to Adjust a Suntour XC Sport Rear Derailleur Range

Escrito Por: Zachary Leeper
  • Comentários: 0
How to Adjust a Suntour XC Sport Rear Derailleur Range

Dificuldade

Moderate

Passos

6

Tempo necessário

25 - 40 minutes

Introdução

Do you have a bicycle with a chain that slips off the gear cassettes? This is a problem that can be caused by incorrect derailleur ranges, and this guide provides simple steps for fixing the problem.

The specific derailleur used in this guide is a Suntour XC Sport, but the same process can typically be applied to most other derailleurs as well.

You may want a pair of gloves you don't mind getting dirty before starting this guide, as you will likely get much of the bike's grease on your hands. This is not necessary, however, as you will see in the guide pictures.

Note that the manufacturer typically presets the derailleur's range to be correct for your specific bike, but this guide may be useful if you have recently replaced the derailleur or crashed your bike.

This guide does not address the issue of the chain not shifting to a specific gear. That problem is usually related to the derailleur’s indexing mechanism, and solutions can be found in other guides.

  1. fRO3liuXaA6BDUNI

    • Flip your bicycle upside down. We will need to spin the pedals while testing our fix, but we don’t want the bike to go anywhere.

    • If you’re feeling fancy, you can instead place the bicycle in a vice grip and elevate it above the ground, but this isn’t necessary.

  2. xScCYJYxAts4jw2S

    • Loosen the low (L) and high (H) rear derailleur adjuster 5mm Phillips head screws using your Phillips head #1 screwdriver.

    • The screws are 5mm in this example, but as long as you have a screwdriver head close to that, it'll work.

    • If the labels are missing, you can determine the low and high screws by tightening them. The low screw will shift the limits away from the wheel when tightened, and the high screw will shift them towards the wheel when tightened.

  3. wrlMLJdHRTelNEtM
    wrlMLJdHRTelNEtM
    KRtVMmJ1D1VimPmG
    ai1RdWVautcmKubH

    • Shift the back wheel into 1st gear (the largest sprocket).

    • Loosen the low screw with your Phillips #1 screwdriver a quarter turn and spin the pedals.

    • Repeat until the chain slips off towards the wheel.

  4. ZdybLVo5hLqQQGaM
    ZdybLVo5hLqQQGaM
    b3Pi2YLPeS1NSQl3
    fRV1oPkKAQZSrqqM

    • Manually place the chain back on the largest sprocket, and tighten the low screw a quarter turn.

    • Spin the pedals, and repeat this step until the chain stays on the sprocket.

    • If you have trouble putting the chain back on, you can give it some slack by pressing down on the bottom of the derailleur.

  5. vCaNepyIfpUMhYpT
    vCaNepyIfpUMhYpT
    cMUINZDOD3XxGRBp
    KklGLAJE4VGLCFRT

    • Shift the back wheel into the highest gear (the smallest sprocket).

    • Loosen the high screw with your Phillips #1 screwdriver a quarter turn and spin the pedals.

    • Repeat until the chain slips off away from the wheel.

  6. 1gnRj1pUQQRXCkXS
    1gnRj1pUQQRXCkXS
    UaYtlFCd5OSLctH3
    1Iv6yT4k6VnHpQGL

    • Manually place the chain back on the smallest sprocket, and tighten the high screw a quarter turn.

    • Spin the pedals, and repeat this step until the chain stays on the sprocket.

    • Again, if you have trouble putting the chain back on, you can give it some slack by pressing down on the bottom of the derailleur.

    • Flip the bicycle upright again, and you can ride without the chain slipping off.

    • If your hands are covered with grease after completing the repair, it'll wash off with soap and water.

Conclusão

By the end of this guide, your bicycle chain should no longer slip off the rear casette.

Autor(a)

Zachary Leeper

Membro desde: 09/06/25

169 Reputação

0 comentários