How do the chain adjustment nuts on the swing-arms of a motorcycle work?

Adjusting the nuts on the swing arms simply changes the position of the rear sprocket, moving it closer or further away from the drive sprocket, and/or changing the alignment of the wheel.

How do I adjust my motorcycle swing arm?

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Once the carrier is released use a hook spanner to rotate it to tighten or loosen the chain as needed as always check your service hour owners manual for the correct measurement for your motorcycle.

How do you adjust a chain adjuster?

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First crack the axle nut loose don't spin it off just loosen it enough to allow the rear wheel to move in the swingarm.

How do you use a chain adjustment tool?

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You want to push up. Make sure this is in position this is all the way down. Hold this push down you're looking for about 10 pounds roughly. You've got about the same result so is good and consistent.

What does a chain adjuster do?

LighTech Chain Adjusters allow for quick and precise chain adjustments that makes chain adjustments a snap. Rather than guessing the axle’s position, micro measurements are now clearly shown on the laser-etched chain adjuster body. When you make an adjustment, there is a distinctive click from the adjusters.

Where is the tight spot on a motorcycle chain?

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So what we're going to do here. Is you can see there on this sprocket there are dots and this dot is the halfway between the high spot and the law spot.

How much slack should there be in a motorcycle chain?

Push up on the bottom of the chain and note the distance between the full-slack (lower) position and the no-slack (upper) position on the bottom . 1.2–1.6 inches (30–40 mm) is typical for streetbikes, while dirt bikes may need 1.4–2.0 inches (35–50 mm) of slack.

How does a motorcycle chain adjuster work?

The chain stretches over time during normal use. To adjust the chain tension you loosen the axle nut and turn the adjuster bolt to allow the rear wheel to move further away from the front sprocket. I’m not sure about the bike pictured, but on my (old) bike there’s another adjustment bolt on the other side of the wheel.

How do you use a chain tensioner on a motorcycle?

Turning the adjusters clockwise will tighten the chain, and counterclockwise will loosen it. By turning the adjusters, you’re moving the whole wheel up and down the swingarm, so it’s important to move them gradually and equally on both sides of the bike.

What is motorcycle chain tensioner?

The chain tensioner is connected to the rear of the bike either near the monoshock or most preferably on the swingarm near the rear chain sprocket and its cog is connected to the chain drive with an adjustment to give the chain some stretch so as to gain optimum slack and tightness to the chain operation.

How do you know if your timing chain tensioner is bad?

Symptoms of a Bad or Failing Timing Chain Tensioner

  1. Engine may stall or run rough.
  2. Noise in the front of the engine (a rattle or rumble, associated with engine speed)
  3. Check Engine Light may illuminate and set misfire, camshaft sensor, and crankshaft sensor codes.


What is chain slack?

Tension & Slack



If chain is too loose, excessive vibration and pulsation may occur causing chain damage. For normal drives, adequate slack should be adjusted to 4% of the chain span. [Example, if the chain span is 46.5″, slack should be 46.5″ x 0.04 = 1.86″] (C).