Proline® check valve repair kit for Walbro carburetors. Our kits meet or exceed OEM specs. Please match you part with ours for proper fitment; actual pictures shown. All carburetor kits can be returned only if unopened and in new or unused condition. Any kit that has be opened or installed will NOT be eligible for our return policy.
Includes:
- Check Valve
- Diaphragm
- Welch Plug
Specs:
- 3 piece kit
- A bad check valve will make your engine hard to start and idle erratically but at wide open throttle (W.O.T) will run fine.
Replaces Walbro OEM #:
- 86-523
Suitable for the following carburetors:
- HDC, SDC, HDB, MDC
Carburetor SDC-1-1
Carburetor SDC-12-1
Carburetor SDC-13-1
Carburetor SDC-21-1
Carburetor SDC-23-1
Carburetor SDC-25-1
Carburetor SDC-26-1
Carburetor SDC-28-1
Carburetor SDC-29-1
Carburetor SDC-31-1
Carburetor SDC-32-1
Carburetor SDC-33-1
Carburetor SDC-44-1
Carburetor SDC-45-1
Carburetor SDC-46-1
Carburetor SDC-48-1
Carburetor SDC-67-1
Carburetor SDC-68-1
Carburetor SDC-69-1
Carburetor SDC-73-1
Carburetor SDC-81-1
Carburetor SDC-82-1
Carburetor SDC-9-1
Carburetor HDB-13-1
Carburetor HDB-18-1
Carburetor HDB-19-1
Carburetor HDB-2-1
Carburetor HDB-5-1
Carburetor HDB-6-1
Carburetor HDB-7-1
Carburetor HDB-8-1
Carburetor HDC-1-1
Carburetor HDC-17-1
Carburetor HDC-26-1
Carburetor HDC-29-1
Carburetor HDC-3-1
Carburetor HDC-47-1
Carburetor HDC-48-1
Carburetor HDC-49-1
Carburetor HDC-50-1
Carburetor HDC-55-1
Carburetor HDC-57-1
Carburetor HDC-58-1
Carburetor HDC-59-1
Carburetor HDC-66-1
Carburetor HDC-69-1
Carburetor SDC-12-1
Carburetor SDC-13-1
Carburetor SDC-21-1
Carburetor SDC-23-1
Carburetor SDC-25-1
Carburetor SDC-26-1
Carburetor SDC-28-1
Carburetor SDC-29-1
Carburetor SDC-31-1
Carburetor SDC-32-1
Carburetor SDC-33-1
Carburetor SDC-44-1
Carburetor SDC-45-1
Carburetor SDC-46-1
Carburetor SDC-48-1
Carburetor SDC-67-1
Carburetor SDC-68-1
Carburetor SDC-69-1
Carburetor SDC-73-1
Carburetor SDC-81-1
Carburetor SDC-82-1
Carburetor SDC-9-1
Carburetor HDB-13-1
Carburetor HDB-18-1
Carburetor HDB-19-1
Carburetor HDB-2-1
Carburetor HDB-5-1
Carburetor HDB-6-1
Carburetor HDB-7-1
Carburetor HDB-8-1
Carburetor HDC-1-1
Carburetor HDC-17-1
Carburetor HDC-26-1
Carburetor HDC-29-1
Carburetor HDC-3-1
Carburetor HDC-47-1
Carburetor HDC-48-1
Carburetor HDC-49-1
Carburetor HDC-50-1
Carburetor HDC-55-1
Carburetor HDC-57-1
Carburetor HDC-58-1
Carburetor HDC-59-1
Carburetor HDC-66-1
Carburetor HDC-69-1