Cylinder head trim cylinders YAMAHA 50 to 90 hp 2-stroke KIT_6H1-43821-11-00

Overview

This YAMAHA trim cylinder head serves as the structural and sealing cap for the hydraulic cylinder. It incorporates seal seats that ensure the cylinder rod is sealed and prevent hydraulic oil leaks.

Technical Specifications

Cylinder head for YAMAHA auxiliary trim cylinders (3-cylinder configuration)
for 50G, 55B, 60F, 70B, 75A, 75C, 80A, 85A, and 90A engines

Not suitable for the central lift cylinder
We recommend verifying compatibility using the engine’s serial number.

Includes:

• 1x bare cylinder head 6H1-43821-11-00
• 1x gasket 6H1-43861-10-00
• 1x gasket 6H1-43822-10-00

Recommended Conditions for Use

The trim cylinder cylinder head must be installed after replacing the seals, which are not always included with the part (check the package contents). The cylinder body must be clean before installation to prevent leaks. Tighten the cylinder head to the torque specified by the manufacturer. After installation, check for leaks by operating the trim system under no-load conditions and then under load.

Technical Benefits

• Robust construction ensuring resistance to working hydraulic pressures
• Precise seal seats ensuring the hydraulic circuit is leak-free
• Protection against marine corrosion thanks to suitable materials and surface treatments
• Replacement eliminates hydraulic fluid leaks at the cylinder head
• Guaranteed dimensional compatibility with the original cylinder body

Usage and Maintenance Tips

• Replace the seals every time the cylinder head is removed, even if they appear to be in good condition
• Thoroughly clean the seal seating surfaces before installation
• Follow the manufacturer’s recommended torque specifications to prevent leaks or deformation
• Check for hydraulic leaks after reassembly by operating the trim system
• Inspect the cylinder head every time the boat is stored for the winter

FAQ