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ver.0217-1 

LM-20-3S-EW-LV

Larson Electronics LLC 

READ BEFORE USING OR INSTALLING! 

Read instructions carefully 

before

 attempting to install the mast or operate 

the mast winches.  Failure to comply with instructions and guidelines could 
result in serious or fatal injury, as well as void any warranty. Retain these 
instructions for future reference. 

1.

Position the unit in its desired location. Ensure that the unit is

completely level

 and then anchor the unit using the mounting holes

located at the bottom of the base. When picking a location, ensure
the mast is free and clear from any overhead obstructions.

2.

Put the mast head on with customer provided equipment.

3.

Once the mast head with customer provided equipment is installed,
you are ready to put power to the unit. This unit runs off of 12VDC.
The 12VDC must be constant. This unit has a provided line in.

Connect the 

white

 wire to your 

positive

 and the 

black 

wire to your 

negative

. The red and green wires are for customer use and are not 

tied to any source in the control box. 

4.

You are now ready to use the unit. Locate the control box on the
side of the unit. The lower right switch controls the power to the
whole unit. Turn that switch to the up (

on

) position.

5.

To fold the mast up in the vertical position:

Remove the mast retaining pin located at the bottom of the
mast.

Instruction Manual 

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