AI Overview
When installing a new plastic
Kohler CH670-0011 fuel pump, the
snap ring is not a permanent part of the engine—it is a
special installation tool. The
1/8" pipe plug is used to seal off an unused port. [
1,
2,
3]
1. Where the Snap Ring Goes
The snap ring goes
directly over the fuel line port openings on the new pump housing. [
1,
2]
- Its Purpose: The new pump uses a twist-lock style retainer with internal locking tabs. Forcing the plastic fuel line fittings (hose barbs) into the pump without compressing these tabs will shear the O-rings or break the pump. [1]
- How to use it: Slide the open end of the snap ring down over the port. Pull or push the ring until its two "ears" compress the internal release tabs on both sides of the port simultaneously. This expands the locking mechanism so your fuel barb fitting can drop seamlessly into place. Once the fitting is flush, remove the snap ring and save it for future repairs. [1, 2, 3, 4]
2. Where the 1/8" Pipe Plug Goes
The 1/8" plug goes into the
unused vacuum/pulse port on your engine block or valve cover. [
1,
2]
- Its Purpose: Kohler uses modular kits that fit multiple engine variations. If your previous setup used a valve-cover-driven pulse pump but you are converting to a mechanical crankcase pump (or vice versa), you will have an open vacuum hole. [1, 2, 3]
- How to use it: Screw the plug into the old, vacant pulse line port to prevent oil leaks and maintain the correct crankcase vacuum. If your exact engine configuration uses all available ports for your hoses, the plug can be discarded. [1]
