The motorcycle chain is an essential component that transfers power from the engine to the rear wheel. To ensure that the motorcycle runs safely and efficiently, it is important that the chain is properly tensioned and correctly aligned. A poorly tensioned or misaligned chain can not only lead to premature wear, but also compromise safety.
In this article, we will show you step by step how to properly tension your motorcycle chain and ensure that it runs straight.
A correctly tensioned chain not only ensures optimum power transmission, but also protects the drive train components from excessive wear. Even a few millimeters too much or too little slack can have negative effects:
Chain too loose: May jump off the sprocket and cause unstable riding behavior. In addition, the chain wears out more quickly.
Chain too tight: Overloads bearings, sprockets, and the chain itself, accelerating wear and tear and shortening the service life of the parts.
In addition, the alignment of the chain plays an equally important role. If the rear wheel is not aligned exactly straight, the chain will be subjected to diagonal stress, which can damage both the chain and the sprocket and lead to unsafe riding behavior.
Before you begin, ensure you have the following tools readily available:
Optional:
Place the motorcycle on its center stand or use a mounting stand to allow the rear wheel to rotate freely. This makes the work easier and allows you to check the chain tension more easily.
Most manufacturers specify in the instruction manual how much slack the chain should have—usually between 20 and 30 millimeters. Measure the slack in the chain in the middle between the front and rear sprockets by pressing the chain up and down. Too much or too little slack requires readjustment.
Loosen the rear wheel axle nut using the appropriate wrench. Be careful to loosen it only enough so that the wheel can be moved easily. The axle nut does not need to be removed completely.
The chain tensioners are located on both sides of the swing arm. Carefully turn the adjustment screws to increase or decrease the tension of the chain. It is important that you adjust both sides evenly so that the wheel remains straight.
To ensure that the chain runs straight, the rear wheel must be precisely aligned. Most motorcycles have markings on the swing arm that help you check the position of the wheel on both sides. Make sure that the markings on both sides are identical. This ensures that the wheel is parallel to the swing arm and that the chain does not run crooked. At Moviba, we use a specially developed laser measuring tool to align the chain as straight as possible.
After adjusting the chain tensioners, check the chain slack again. If the chain is still too loose or too tight, you will need to adjust the tensioners further.
Tighten the axle nut again once the chain tension and alignment are correct. Observe the torque recommended in the operating instructions to ensure that the axle is properly secured.
Turn the rear wheel by hand to ensure that the chain runs smoothly and does not make any unusual noises. If everything is OK, you can lower the motorcycle again.
Tensioning and aligning the chain on a motorcycle is an important maintenance task that should be performed regularly to ensure optimal performance and safety of your motorcycle. Always make sure that the chain is not only correctly tensioned, but also clean and well aligned to avoid unnecessary wear and tear and enjoy a smooth ride.
Just as important as having the right chain tension is keeping your chain in good shape. Everything you need to know about caring for your chain can be found here.
