Parts and equipment for motorcycles, quads, scooters and bicycles

Troubleshooting > Failures par brand > FOSTI > FOSTI F51 > The chain of my FOSTI F51 motorcycle is derailed.

My FOSTI F50 boxed 51cc motorcycle has a chain problem.

The failure of a motorcycle chain is a serious and widespread problem which can be very dangerous at times! Especially if it happens when you are stuck in traffic or driving on the freeway. Regular inspection and maintenance will minimize the risk.

motorcycle sprocket control 50 FOSTI F51

Checking the crown and pinion teeth for wear on your 50 FOSTI 51 motorcycle

The number one cause of failure of a motorcycle chain is the rear sprocket . Important piece, the rear sprocket plays an essential role in transmission.

Over time, the sprocket or pinion also wears out. Like the rear sprocket , if the teeth are getting sharp, it is time to think about replacement.

We recommend that you proceed with a complete replacement of the chain kit (crown, pinion, chain).

Poor alignment of the wheels can also be responsible for the failure of the chain. To solve this problem, all you have to do is use a ruler on the rear sprocket and check if it is in alignment with the chain.

Checking the chain tension on your 50cc FOSTI 51 motorcycle

The tension is measured by the movement of the chain. This must be a minimum of 2,5cm but never exceed 3,5cm. Quite often, the ideal value is indicatedepar the manufacturer either on the maintenance manual or directly on the swingarm par a sticker.

It is necessary to adjust the chain tensioners left and right after loosening the motorcycle locknuts. Use a graduated ruler or a meter.

motorcycle chain tensioner 50 FOSTI F51

A few tips for maintaining a chain kit on your FOSTI F51 50 motorcycle

To prevent failure and dropping, cleaning and inspecting a chain kit motorcycles are an integral part of the regular maintenance of any owner. A chain left dirty and exposed to external aggressions such as rain and dustâ € will translate par very expensive problems par the following.

For example, rain and salty roads in winter are significant factors that can cause premature wear and tear on your chain and your sprocket or pinion.

To prevent this from happening to you, we recommend that you clean your chain kit carefully with a degreaser to remove excess grease and dust, to do every km and lubricate it. It is also necessary to remember to regularly check the tension of your chain to ensure the proper functioning of your motorcycle as well as your safety.

Check out our tips for "Maintain your chain of transmission"and find our recommendations for"Choosing the right chain or chain kit"


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