Tensioners & Pulleys
About Tensioners & Pulleys
A cam chain tensioner keeps the timing chain tight so it cannot slap or jump a tooth. The listings in this category are tensioners for Honda, Kawasaki, Polaris and Yamaha machines, along with a manual tensioner for Gas Gas, Husqvarna and KTM. A new tensioner is the usual fix for a ticking or rattling sound from the top of the engine, and it is often changed along with a new chain.
Most tensioners work automatically, taking up slack with spring force, oil pressure or both, so they are specific to an engine. A manual tensioner is adjusted by hand to a set position instead, and the listing marks it as manual. You cannot swap between types, so match the part to your machine, year and engine. Check the chain at the same time. A chain that has stretched wears out a new tensioner quickly, and a worn tensioner is a common reason a chain makes noise. Follow the service manual for the removal and reset procedure, since the tensioner is often held compressed during installation.
Brands in this category are PSR and Hot Cams. Pick your machine in the Ride Finder at the top of the page to see the right part. The rest of the group is Timing Belts & Chains and Sprockets, part of Timing Components & Kits.
FAQs on cam chain tensioners
What are the signs of a failing cam chain tensioner?
Signs of a failing cam chain tensioner are a rattle or tick from the top of the engine, noise that changes with engine speed, and a chain that feels slack. Have it inspected soon, because a loose chain can skip and upset the valve timing.
What is the difference between an automatic and a manual cam chain tensioner?
An automatic tensioner takes up slack on its own using spring force or oil pressure. A manual tensioner is set by hand to a fixed position and may need readjusting over time. The listing marks manual types, and each is built for specific engines.
Should I replace the cam chain at the same time as the tensioner?
Usually, if the chain has stretched. A new tensioner can only take up so much slack, and a worn chain also wears the sprockets. Inspect the chain and sprockets when the engine is open, and follow the service manual.
Can I install a cam chain tensioner myself?
Many owners do, with the service manual. The tensioner is often held compressed while it is fitted, and the engine must be at the correct timing position. If you are not comfortable with valve timing, have a shop do the job.
Which cam chain tensioner fits my machine?
Tensioners are made for specific engines, so match the make, model and year. Listings name machines or brands such as Honda, Kawasaki, Polaris or Yamaha. Use the Ride Finder or your manual to confirm the right one before ordering.
