Manuals for Groco Thruhulls and Seacocks

Owner and Workshop Manuals are important documents that should be part of every vessel's library. They contain the detailed information necessary for safe operation, maintenance and correct servicing.  

The manuals on this page are provided for public information and education and can be downloaded for free.  All copyrights belong to copyright holders stated in the documents.

Dennison Berwick at launch of Marine Diesel Basics 1 in Toronto, Canada

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Cover of Marine Diesel Basics 1
Plug Tied to Seacock
Plug for every seacock

Marine Diesel Basics 1
shows how to do over 140 tasks:

•  explains all parts of the marine diesel system - fuel,
lubrication, breathing, electrics, stern gland, propeller etc.
•  300+ drawings, 222 pages
•  tasks are fully explained with clear drawings and minimal text
•  all tools & supplies needed are illustrated for each task
•  paperback US$15.99 £10.99 €12.99
•  ebook (kindle, kobo, ibooks, google, epub) US$9.99

Groco Raw Water Strainers

Groco BV Seacock Manual

BV Series Full Flow Seacocks

Installation, Operation, and Maintenance

1 page



Groco RWM Raw Water Basket Strainers

RWM Series - Raw Water Manifold


Installation, Operation, and Maintenance

1 page


Groco SV Series Seacock Maintenance Guide

SV Series Seacocks

Maintenance, Parts & Assembly


1 page
publ. - no date given


<1 MB file

Groco Hull Strainers

External Hull Strainer with Access Door

APHS series
ASC series
RSC series
SC series

1 page


Groco BVS Series Basket Strainers

Installation, Operation, and Maintenance

BVS Series 

Seacock and Strainer


1 page




Groco SS Basket Strainers

Installation, Operation, Maintenance Manual

SS Series

Seacock / Strainer Combination


1 page


Groco SVS Seacock and Basket Strainer

Installation, Operation, Maintenance

SVS Series
Seacock / Strainer Combination


1 page


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