• Honda BF25D BF30D Outboard shown in side profile on a white background, with large black text reading 'SERVICE, WORKSHOP & REPAIR MANUAL' at the bottom.
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  • A page from a Honda service manual showing instructions and diagrams for checking and replacing the crankcase breather and exhaust emission tubes. The page includes numbered callouts, a line drawing of the engine components, and a small table with standard values.
  • Honda BF25D BF30D outboard service manual page showing alert indicator light circuit diagram and oil pressure switch operation
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Dr. E Manuals

Honda BF25D BF30D Outboard Service Manual

Honda BF25D BF30D Outboard Service Manual

£11.95 GBP
£11.95 GBP
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Honda BF25D BF30D Outboard Service / Repair / Workshop Manual

Instant download after purchase, in PDF form, NOT a physical book.

This manual contains 343 pages in English Language, it is the only manual you will require to maintain, repair and service your Honda BF25D BF30D Outboard.

Sample pages and table of contents can be seen in the third product picture, please make sure you are happy with the quality of the manuals before purchasing.

If you have any issues downloading/accessing your manual, please contact us so we can fix this for you.

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BF25D/BF30D: Honda's Mid-Range Portable Twins, Sharing a Shop Manual With the Earlier A-Series

Honda's own official factory shop manual documentation confirms this exact pairing genuinely bundles four related model designations together: the BF20A, BF25A, BF30A, BF25D, and BF30D, reflecting how closely related these engines are internally despite spanning slightly different displacement classes and control types. The Payhip-hosted reprint confirms the table of contents runs through specifications, fuel system, flywheel and timing belt, recoil starter (tiller handle type only), cylinder head, valves, oil pump, crankcase, cylinder block, crankshaft, piston, propeller, gear case, and full electrical equipment and wiring diagrams, with a dedicated BF30 supplement covering that model's specific differences.

Power delivers 18.4 kW (25 hp) on the BF25D and 22.1 kW (30 hp) on the BF30D, per Honda's own owner's manual. Honda's own product materials confirm the fundamental engineering shared across this whole class of Honda outboards: an Engine Alert System using visual, audio, and RPM-reduction circuits to warn of overheating, low oil pressure, or over-revving, Auto Start Enrichment acting as an automatic choke for quick cold starts, and a standard rectifier/regulator on both manual and electric-start configurations.

The BF25D and BF30D produce a 12-volt, 4- or 10-amp battery-charging current, protected by a 15-amp fuse in the engine compartment — Honda's own owner's manual specifies a minimum 65 Ah (420 CCA) battery for electric-start operation. Correct transom height matters directly to performance: Honda's own manual lists 17.0 inches for the "S" (short) shaft type and 21.7 inches for the "L" (long) shaft type at a 12-degree transom angle, with the antiventilation plate needing to sit 0-2 inches below the boat's bottom for proper cooling and to avoid porpoising at speed.

Honda's own confirmed frame serial number ranges list BF25D covering BATJ-1000001 through 9999999 and BF30D covering BAUJ-1000001 through 9999999 — worth confirming against the specific engine before ordering parts, since some models have multiple manual editions based on serial number.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a Honda BF25D/BF30D outboard running the way it was built to.

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    Due to the nature of digital products, all sales are final. We recommend reviewing the sample preview on the product page to ensure the manual meets your expectations before purchase. Refunds will not be issued for issues related to content quality already disclosed or shown in the preview.