Cummins/Onan 4.0 BF-1R/9500 — Carburetor Disassembly and Repair
Repair & overhaul
For the Cummins/Onan 4.0 BF-1R/9500, from the Cummins/Onan service manual.
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Before you start
- Always work on carburetor in clean conditions
Procedure
- Disconnect fuel inlet hose and crankcase breather hose
- Remove air cleaner assembly
- Disconnect governor, throttle linkage and choke control
- Remove two hold-down screws and lift carburetor from intake manifold
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.