Just in case, this has to be.
Good set to be in reserve. Comes with a handy plastic box where parts are stored.
There are no complaints about the quality of the service kit for the pump, everything is at its best,
there are complaints about the completeness, the manufacturer did not include in the kit one important rubber band (seal) that ensures tightness on the output rotating fuel supply union (on the rotating union, which is screwed directly onto the fuel supply hose to the burner).
I think this is a big drawback, since, due to the frequent use of the rotation of the fitting, the seal in this place can quickly wear out and fail.
It is strange that the manufacturer did not consider it necessary to include a rubber ring in the kit for repairing it, because on new versions of pumps this unit is collapsible.
P.S. Therefore, two stars.