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Stark VARG EX chain: cleaning, lubrication and 25–32 mm slack

A quiet electric drivetrain makes chain noise easier to hear, but do not wait for noise. A quick post-wash check protects sprockets, guides and bearings.

Stark VARG EX chain, swingarm and adjuster diagram
01

Wash without forcing water into components

Begin with a gentle flow of water and a suitable chain cleaner. Use a cloth to lift away the remaining dirt rather than relying on pressure to do the work.

Keep high-pressure water away from bearings and electrical equipment. The aim is to remove abrasive contamination without driving water into areas where it can create a separate problem.

Allow the chain to dry before applying lubricant. Lubricating over water and dirt traps contamination rather than completing the job.

02

Lubricate with the motorcycle fully off

Turn the rear wheel by hand only after confirming that the motorcycle is fully off. Apply lubricant evenly as the chain moves around the sprockets.

One wheel revolution is enough. More product does not mean more protection; excess lubricant attracts grit, so wipe away anything left on the outside after application.

The maintenance routine calls for lubrication before and after every ride. Tying the post-ride application to cleaning makes the interval easier to remember, while the pre-ride check confirms the chain is ready before you set off.

03

Measure slack at the specified point

Check at the end of the chain slider, where the official measurement is about 25–32 mm. Using the same point each time avoids inconsistent readings and unnecessary adjustment.

When correction is needed, move both sides of the axle equally. The clicker is there to help you count matching quarter turns, reducing the chance of leaving the rear wheel out of alignment.

After adjustment, apply the axle torque stated in the manual. Do not guess the tightening value. A wheel that is misaligned can make the drivetrain run unevenly even when the measured slack appears correct.

04

Inspect the whole drive system

Do not assess the chain in isolation. Check elongation, both sprockets, the slider and the guide during the same inspection, because wear in one part affects how the rest of the system runs.

The Bajamoto finder places these components together on one diagram. Sprocket sizes appear as separate OEM items, allowing you to identify the required part without assuming that visually similar components are interchangeable.

If you find damaged teeth, excessive wear or a guide problem, identify the affected items before ordering. A complete inspection is more useful than replacing the first noisy component and overlooking the cause.