Husqvarna 395XP Muffler Screw (Replacement)

This Husqvarna 395XP muffler screw replaces a lost, stripped, or stretched bolt that holds the muffler to the cylinder. A big saw vibrates hard, and a loose muffler can leak exhaust, crack its gasket, or damage the threads in the cylinder.

Why muffler screws go missing

The 395XP is a heavy, high-displacement saw that spends its day in big wood. Heat cycles and vibration work muffler screws loose over time, and once one backs out the others take the load and follow.

Running a saw with a loose muffler can leak hot exhaust where it should not, damage the gasket, and in the worst case strip the threads in the cylinder.

Missing screws also let the muffler shift, which can stress the exhaust gasket and the cylinder ports. It is a small part, but it protects some of the most expensive pieces of the saw.

Fitting and checking

Let the saw cool, clean the threads, and fit the new screw with the muffler gasket in place. Tighten evenly to the torque in the service manual rather than guessing. Check muffler screws as part of regular saw maintenance, along with the spark arrestor screen.

If a thread in the cylinder is already damaged, have a qualified shop repair it rather than forcing a new screw in at an angle.

Confirm the part number against your saw's model and serial plate or the manufacturer's parts lookup before ordering, since parts can change between production runs. Browse other chainsaw parts for big saws.