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1979 Honda CB650 Chain Adjusters

Inspect the rear-wheel adjustment hardware on both sides of your 1979 CB650 before ordering. The listed set supplies two adjusters with bolts and nuts, replacing 40543-425-000. Check the retained swingarm fittings separately, and keep internal primary-chain work apart from rear-wheel service.

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Honda CB750 CB650 drive chain adjuster set 40543-425-000

1979-83 Honda CB750 / CB650 Drive Chain Adjuster Set ~ Replaces 40543-425-000

$42.95 USD
73-0101
Replace your DOHC CB chain adjusters with this Complete Drive Chain Adjuster Set. Includes 2 chain adjusters, 2 chain adjusting bolts, and 2 adjuster...
Honda CB650 CB550 CB500 CB400 CB350 primary chain 23131-426-003

Honda CB Primary Chain ~ Replaces 23131-426-003

$179.95 USD
73-0162
Replace your CB primary chain with this OEM-Quality Primary Chain, 50 link, replacing OEM #23131-426-003 / #23131-323-003.Key Features• Primary chain, OEM quality• 50 link•...
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1979 Honda CB650 · Chain Adjusters Buying guide

Renew the rear adjustment hardware as matched pieces

Two adjusters, two adjusting bolts and two nuts make up the listed set. Compare those six pieces with the existing hardware; the package does not list every component around the rear axle.

Parts to consider

1979-83 Honda CB750 / CB650 Drive Chain Adjuster Set ~ Replaces 40543-425-000 Drive-chain adjuster setTwo adjusters, two adjusting bolts and two nuts are supplied.View part

Check the six-piece contents against the repair

The set supplies hardware for both adjuster positions and replaces 40543-425-000. Lay out the removed pieces and inspect the surrounding swingarm fittings before purchase. The stated contents are adjusters, bolts and nuts, so identify any other damaged axle hardware separately.

Keep chain service in the correct system

The 50-link primary chain serves the internal engine drive, not the rear wheel. Identify the rear-drive chain separately, then use the Honda inspection and adjustment procedure for the fitted chain and sprockets.

Buying questions

Can I rely only on swingarm marks to align the rear wheel?

No. Use both adjusters evenly, verify rear-wheel alignment with an accurate method and set chain slack to the Honda specification. Worn or mismatched index marks are not enough to establish alignment.

What should I inspect and recheck during chain adjustment?

Check the drive chain, both sprockets, axle, wheel bearings and adjuster seating. Tighten the axle and adjuster hardware using the service-manual procedure, then recheck chain slack after the axle is secured.

Is the 50-link chain a rear drive chain?

No. It is an internal primary chain. Keep that engine component separate from the chain that drives the rear wheel when planning parts or maintenance.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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