Dirt Bike Valve Spring Compressor

Dirt Bike Valve Spring Compressor FAQ

Do four stroke dirt bikes have valvetrain maintenance?

Four-stroke dirt bikes have evolved over the years, and are immensely popular among riders and racers alike. While they have a lot of power and are a blast to ride, valvetrain maintenance is a responsibility that comes along with them. Here we take a look at proper practices when replacing valves and valve springs.

How do you remove the spring from a gas valve?

Now take the socket and put it on the valve with the square end up. With it centered and square on the valve spring keeper cap, hit it sharply, but not too hard, with a hammer. The two valve keepers will fall out and you can take the spring cap and springs off the end of the valve.

How do you lubricate an oil pressure regulator valve?

Put some oil on the steel shims for under the valve springs and put them on before the valve seals. Put some lube on the valve seals and push it on the end of the valve. Push it down to the guide, then on to the guide with the right sized, deep well, socket.

How do you know when to replace the valve springs?

Check both the seats and retainers for signs of wear, which usually originate as a result of contact with the valve spring. If heavy wear or indentations are observed, these parts should be replaced. Similarly, it is considered best practice to replace the keepers and valve stem seals as part of the valve overhaul.