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Field write-ups from real jobs - what broke, what fixed it, torque specs and part numbers included. Ask it a question; specs answer inline.

MerCruiser (3)Sea-Doo (2)Yamaha (2)Catalina (1)Evinrude-Johnson (1)Honda (1)Mercury (1)Sea Ray (1)Suzuki (1)Volvo Penta (1)

3 direct answers and 9 articles for “cooling”

Coolant Capacity Closed Cooled · cooling
5 to 6 US qt (heat-exchanger system)
From Westerbeke W-13/18/21/27/33 — specs & service (from free OEM manual) · Source: Westerbeke Pub. 36195 owner's manual
Coolant Capacity Closed Cooled · cooling
7 US qt (thermostatically controlled, with coolant-recovery bottle)
From Westerbeke W46 diesel — specs & service (from free OEM manual) · Source: Westerbeke W46 Operator's Manual Pub. 34468
Thermostat 30b Three · cooling
175-183F
From Westerbeke / Universal diesel — cooling failures & fixes (deep dossier) · Source: Westerbeke 30B literature (VERIFY)

MerCruiser Winterization (Raw-Water-Cooled)

## The stakes A raw-water-cooled MerCruiser holds water in the block, manifolds, and ...

MerCruisersterndrive
2026-07-05 · 1 views

Outboard Overheating: A Diagnosis Flow That Doesn't Guess

... confirm actual temperature before touching the cooling system. 2. **Check the telltale.** Weak or ...

outboard
2026-07-05 · 1 views

Mercury Outboard Water Pump / Impeller Replacement

... unit is the heart of the cooling system. Mercury recommends regular replacement regardless of ...

Mercuryoutboard
2026-07-05 · 1 views

Exhaust Manifold and Riser Inspection on Marine V8s

## The quiet engine killer On raw-water-cooled MerCruiser, Volvo Penta, and inboard V8s ...

inboard/sterndrive V8
2026-07-05 · 1 views

MerCruiser Raw Water Impeller: Alpha vs Bravo Differences

... impeller vane fragments upstream in the cooling system after a failure; find them or ...

MerCruiserAlpha / Bravosterndrive
2026-07-05 · 1 views

Two-Stroke vs Four-Stroke Oil: What Goes Where and Why It Matters

... formulated for water-cooled engines that run cooler than air-cooled equipment. Lawn-equipment ...

2026-07-05 · 3 views

Sea Trial Checklist for Mechanics

... 7. **Back to idle** — does it idle hot after load (cooling restriction tell)? Restart ...

2026-07-05 · 1 views

Anodes and Galvanic Corrosion, Explained for the Dock

... engines carry pencil anodes in the cooling system — check the service manual for locations ...

2026-07-05 · 1 views

Reading Marine Spark Plugs: A Diagnosis in Your Hand

... on a hot engine let it cool — plugs in aluminum heads gall when removed ...

2026-07-05 · 2 views
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