Harken: Identifying Harken Furlers

IDENTIFYING FURLERS

MKI Roll Pin—MKI
These furlers have a series number stamped into the aluminum on top of the spool. For example: 1-189 indicates the furler is a Unit 1 built in January 1989.

MKII
The series number has been eliminated, but changes in style indicate the furler is an MKII.

A. Line spool is plastic.
B. Spool comes in two halves.
C.Torque tube tapers at the top.
D. Halyard swivel is "Air" style.

MKIII
A. Two black line guards replace stainless steel cover.
B. Aluminum anodizing is black instead of grey.

Measurement diagram IDENTIFYING UNIT SIZE

MKI, MKII, MKIII, MKIV
00AL
1. Tack attachment is not on an independent swivel and is riveted to torque tube.
2. Measurement across top is 5 3/4" (146 mm).

MKI, MKII, MKIII, MKIV
Unit 0
1. Tack is on independent swivel
2. Measurement across top is 5 3/4" (146 mm)
3. Clevis pin diameter: 5/16" (8 mm); 3/8" (9.5 mm); 7/16" (11 mm).

ROLL PIN, MKI, MKII, MKIII, MKIV
Unit 1
1. Measurement across top of drum is 7 1/2" (190.5 mm).
2. Clevis pin diameter is 1/2 " (12.7 mm).

3. Roll pin and MKI models: Use series number for identification.

ROLL PIN, MKI, MKII, MKIII, MKIV
Unit 2
1. Measurement across top of drum is 9 1/2" (241 mm).
2. Clevis pin diameter is 5/8" (16 mm).

3. Roll pin and MKI models: Use series number for identification.

MKI, MKII, MKIII, MKIV
Unit 3
1. Measurement across top of drum is 12 1/8" (308 mm).
2. Clevis pin diameter is 3/4"(19 mm); 7/8" (22 mm).
3. Torque tube length is 13" (330 mm).

MKI, MKII, MKIII
Unit 3.25
1. Measurement across top of drum is 12 1/8" (308 mm).
2. Clevis pin diameter is 7/8" (22 mm); 1" (25.4 mm).
3.Torque Tube length is 15" (381 mm).