WARNING! Tying to head will cause block to break suddenly, possibly causing an accident.
See www.harken.com/manuals for additional safety information.
Inspect loop for chafe or UV-damage every time you sail.
Replace damaged loop immediately. Replace line with
no visible damage every two-years use.
Inspect Line Every Time You Sail
WARNING! Failure to inspect and replace UV-damaged, worn or frayed line can cause
the line to break suddenly, possibly causing an accident.
Do Not Use Loop in Choker Style
Use Harken supplied loops. Refer to specification chart. If you make your own loops refer to Using
Alternate Line Knots and Splices on last page.
Always Loop to Anchor Post in Mouth of Block
Always loop to anchor post in the mouth of the block. The head is not strong enough to secure line.
CORRECT
INCORRECT
Assembly
Remove one end of loop.
Tip: Use a small hooked tool or hex key to lift loop off the anchor post.
Slip loop around bail. Run loop into head at bottom of block and into mouth as shown.
Tip: use a tool to push loop into mouth.
Secure end of loop to Anchor Post. Pull on block to make sure loop is seated.
Mouth
Head
WARNING! Using loop in a choker style greatly reduces the strength of the loop causing
the loop to break suddenly at high load, possibly causing an accident.
Do not use the loop in the choker style as shown below. Always attach loop to create four strands as
shown under Assembly.
INCORRECT
Make sure spliced loop is long enough to prevent pinching and
binding sheave. Make loop longer than sheave diameter.
Make sure “X” is
greater than “Y”.
X
Y
Using T2 Block as a Becket
CORRECT
Four (4)
Strands
Four (4)
Strands
