# F25-F30 — Outboard motor service specifications by brand and model

For F25-F30, brand is Yamaha; spark plug is NGK DPR6EA-9; gap is 0.035" (0.9mm), recorded from its source on 2026-08-05.

- **Brand:** Yamaha
- **Model / range:** F25-F30 _(verified: appears in the quote below)_
- **Spark plug:** NGK DPR6EA-9 _(verified: appears in the quote below)_
- **Gap:** 0.035" (0.9mm) _(verified: appears in the quote below)_

## What the source says

> F25-F30 | NGK DPR6EA-9 | 0.035" (0.9mm)

## Source

- https://seasierra.com/blogs/outboard-101/outboard-spark-plug-replacement-the-right-plugs-and-gaps

Last verified: 2026-08-05. Review by: 2028-08-04.
Part of [Outboard motor service specifications by brand and model](https://referencesource.org/outboard-motor-service-specs/).