How to Measure the Size of a Chinese ATV Chain

by Blaze Johnson

Chinese all-terrain vehicles come in several different sizes and usually feature 50, 90, 70, 110, 125 or 250cc engines. While multiple Chinese ATV manufacturers exist, certain makes and models emulate the design of Honda and Yamaha ATVs. Certain parts for your Chinese-made ATV may be interchangeable with different brands and models. When replacing the chain for your ATV, you may wish to perform a couple measurements before committing to a purchase. Using the wrong size change for your ATV will cause damage to the drive-train components.

Step 1

Inspect the rear of your ATV and locate the chain master link. The chain master link will feature a small clip that's used to connect to both ends of the chain. Rotate the rear wheels of your ATV if you cannot readily locate the chain master link.

Step 2

Remove the small clip securing the master link to the chain with a pair of needle-nose pliers.

Step 3

Pull the master link off the chain and set it to the side for safekeeping. Lay the chain as straight as possible on a flat surface.

Step 4

Measure the chain from end to end with a measuring tape. Write down the length on a piece of paper for referencing purposes.

Step 5

Measure the chain's pitch by measuring the distance between the centers of two link rivets. Chinese ATVs that feature smaller 50, 70, 90 and 110cc engines may feature a chain pitch of 1/2-inch, while larger ATVs may use a 5/8 or 3/4-inch pitch chain.

Step 6

Measure the inside width of one of the chain links, followed by the width of the roller, located between the link plates. Measure the sizes of these chain components in millimeters and write the figures down on the piece of paper.

Step 7

Find the appropriate chain model number for your particular application using the measurements taken from your chain and a suitable reference chart (see Resources). Common chain model numbers for Chinese ATV applications include "420", "425", "428", "520", "525", "530" and "630."

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