Follow a sacrificial anode schedule — not a guess
Anodes protect lower units and trim tabs. Too little zinc and metal erodes; too much can overprotect.
Why this matters
Anodes protect lower units and trim tabs. Too little zinc and metal erodes; too much can overprotect.
When DIY is not enough
Rapid anode loss, pitting on props, or trim tab erosion signals bonding or galvanic issues — our 200-hour service includes anode and lower-unit inspection.
DIY steps
- Inspect anodes monthly in saltwater service.
- Replace when 50% or more is consumed — don't wait for disappearance.
- Match anode type to your environment (salt vs. brackish).
- Keep spare anodes on board for long trips.
Related FTM services
- 200-Hour Service
- 100-Hour Service
Professional mobile service
Rather have a pro handle it?
Full Throttle Marine comes to your dock in Tampa Bay and on the First Coast. Flat-rate quoted before we arrive. Yamaha and Mercury outboard specialists — no trailers, no waiting rooms.
Common questions
Follow a sacrificial anode schedule — not a guess
Anodes protect lower units and trim tabs. Too little zinc and metal erodes; too much can overprotect. If an anode looks 'fine' but hasn't been changed in two seasons, it's probably wrong for your slip chemistry.
When should I call a professional instead?
Rapid anode loss, pitting on props, or trim tab erosion signals bonding or galvanic issues — our 200-hour service includes anode and lower-unit inspection.
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