The KK-4981 Intake Housing with Filter is the Air Filter Replacement kit and is the most current air filter replacement.
This KK-4981 Intake Muffler Replacement kit is also the current replacement kit for the KK-4977 Air filter service kit.
The KK-4981 Air Filter Replacement Kit includes the following parts.
1 Intake Muffler Plastic Housing
1 Intake Screen Part # DAC-142
1 Intake Filter Part # DAC-143
2 Two Air Filter Fasteners
1 Installation Instructions
Assure that O-ring seals are seated in the valve plate grooves on both sides of the valve plate.
If needed a little bit of O-ring grease or a similar substance can be used to help keep the O-rings in place during reassembly.
Align the gasket, intake muffler and valve plate and tighten the head bolts to 7-10 ft. lbs.
If either of the O-rings are damaged you should replace the damaged O-rings with new O-rings.