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Big Boat High-Load End Controls and Trim Caps

End Controls: 3173, 3174 • Track: 3154, 3155, 3159, 3162, 1846, R32, 3156, R32HB

Trim Caps: 3157, 3158

Read instructions Before You Cut, Drill or Mount Track

To cut track to length, make sure stop holes for control blocks do not interfere 

with hole for mounting track. If necessary, cut both ends of track.

It may be necessary to put trim caps, control blocks and traveler car on track  

before mounting. Slide control assemblies onto track with bumper facing car.  

Keep control assembly loose so it can be moved away while installing track.

Track Cutting Considerations

Dead-ending Line at End Control

Remove any burrs on edges of track. Press 3157 or 3158 trim caps in place. 

Important: insert trim caps before drilling outboard control block hole. 

To determine correct track length, make sure track ends, without trim caps, are 

13

/

16

" (21 mm) from edge of cockpit coaming to allow room for trim caps.

Install Trim Caps in Track Ends

Cockpit Installation—Allow Room for Trim Caps

Cut both ends of track to prevent interference with existing holes in track

No

Yes

Drill

 

27

/

64

" (10.5 mm) hole 

through top surface of track

 only.  

Important: Do not use screw hole in control block as a drill guide.

Position Control Block/Drill Track/Secure Control

Position control block flush with end of track. Drive screw firmly against top 

surface to mark track, then loosen. Slide control block away. 

13

/

16

"  

(21 mm)

4

9

/

16

" (116 mm)

7

/

16

"  

(11 mm)

Secure control block to track by tightening correct screw into hole.

Cockpit 

Edge 

I N S T R U C T I O N S

USA

 

 

Tel:

 (+1) 262-691-3320 • 

Web:

 www.harken.com • 

Email:

 [email protected]

Italy

 

 

Tel:

 (+39) 031.3523511 • 

Web:

 www.harken.it • 

Email:

 [email protected]

IMPORTANT: See Inspection and Maintenance at end of manual.

Note:

 3173, 3174 end controls do not fit older non-CB track. The interior ridges that 

extend into the waist of the track are too deep to fit non-CB track. 3173 and 3174 

controls require track with deep grooves for the wire keepers used on CB cars.

Strictly follow all instructions to avoid an accident, damage to 

your vessel, personal injury or death. See www.harken.com/

manuals for additional safety information.

3156, R32HB 

Use 45 mm Screws

3154, 3155, 3159, 3162, 1846, R32 

Use 25 mm Screws

Big Boat High-Load End Controls and Trim Caps

End Controls: 3173, 3174 • Track: 3154, 3155, 3159, 3162, 1846, R32, 3156, R32HB

Trim Caps: 3157, 3158

Read instructions Before You Cut, Drill or Mount Track

To cut track to length, make sure stop holes for control blocks do not interfere 

with hole for mounting track. If necessary, cut both ends of track.

It may be necessary to put trim caps, control blocks and traveler car on track  

before mounting. Slide control assemblies onto track with bumper facing car.  

Keep control assembly loose so it can be moved away while installing track.

Track Cutting Considerations

Dead-ending Line at End Control

Remove any burrs on edges of track. Press 3157 or 3158 trim caps in place. 

Important: insert trim caps before drilling outboard control block hole. 

To determine correct track length, make sure track ends, without trim caps, are 

13

/

16

" (21 mm) from edge of cockpit coaming to allow room for trim caps.

Install Trim Caps in Track Ends

Cockpit Installation—Allow Room for Trim Caps

Cut both ends of track to prevent interference with existing holes in track

No

Yes

Drill

 

27

/

64

" (10.5 mm) hole 

through top surface of track

 only.  

Important: Do not use screw hole in control block as a drill guide.

Position Control Block/Drill Track/Secure Control

Position control block flush with end of track. Drive screw firmly against top 

surface to mark track, then loosen. Slide control block away. 

13

/

16

"  

(21 mm)

4

9

/

16

" (116 mm)

7

/

16

"  

(11 mm)

Secure control block to track by tightening correct screw into hole.

Cockpit 

Edge 

I N S T R U C T I O N S

USA

 

 

Tel:

 (+1) 262-691-3320 • 

Web:

 www.harken.com • 

Email:

 [email protected]

Italy

 

 

Tel:

 (+39) 031.3523511 • 

Web:

 www.harken.it • 

Email:

 [email protected]

IMPORTANT: See Inspection and Maintenance at end of manual.

Note:

 3173, 3174 end controls do not fit older non-CB track. The interior ridges that 

extend into the waist of the track are too deep to fit non-CB track. 3173 and 3174 

controls require track with deep grooves for the wire keepers used on CB cars.

Strictly follow all instructions to avoid an accident, damage to 

your vessel, personal injury or death. See www.harken.com/

manuals for additional safety information.

3156, R32HB 

Use 45 mm Screws

3154, 3155, 3159, 3162, 1846, R32 

Use 25 mm Screws

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