Skip to content
Köysan Marine Gearboxes
CompanyProductsReferenceQualityGuideContact
TRENFRعAR
Get a Quote
01Company02Products03Reference04Quality05Technical Guide06Contact
TRENFRعAR
Get a Quote
Home/Technical Guide

Technical Guide

Technical Guide

Technical guides drawn from half a century of manufacturing experience, to help you select the right gearbox and keep it running.

Marine Gearbox Failure Symptoms and Maintenance Checklist

Learn about common failure symptoms, early warning signs, and the periodic maintenance checklist to prevent costly repairs in marine gearboxes.

Read the guide →

ATF Selection and Oil Change Intervals in Marine Gearboxes

Learn about choosing the right transmission oil, the break-in process, periodic oil change intervals, and critical maintenance tips to extend your gearbox's life.

Read the guide →

Mechanical vs. Hydraulic Clutch: Which is Right for Your Boat?

Learn the differences between mechanical and hydraulic clutch systems in marine gearboxes, their advantages, and how to make the best choice for your boat.

Read the guide →

How to Choose the Right Reduction Ratio?

Learn how to select the correct marine gearbox reduction ratio for your boat by matching engine power, RPM, and propeller diameter.

Read the guide →

How to Check SAE Bell Housing Compatibility?

Learn about global SAE standards for marine gearbox and engine connections, bell housing dimensions, and adapter usage.

Read the guide →
Köysan Marine Gearboxes

Turkish engineering for marine power transmission since 1977.

41.0048° N — 29.1642° E

PAGESCompanyProductsReferenceQualityContactTechnical Guide
CONTACT+90 216 364 31 92+90 216 314 36 31/32+90 533 612 24 79info@koysan.com.tr
© 2026 Köysan® Deniz Şanzımanları — All rights reserved.Cookie Policy