TRUSS ROD INFORMATION
September, 2010

Due to some confusion regarding setting the relief on our Europe Series Basses™ we would like to clarify the following important truss rod information.

 

IF YOUR EURO BASS HAS A TRUSS ROD WITH A 5mm NUT IT IS SINGLE ACTION.

 

USA SERIES: Dual action

EUROPE SERIES: Any Europe Series Bass with 5mm truss rod nut is single action

PROFESSIONAL SERIES: Dual action

We will be switching all of our Euro Models to Double Action Truss Rods shortly.

To loosen your guitar's truss rod, with the fingerboard facing you, carefully turn the truss rod adjustment nut to the left.  Lefty = Loosey - Righty = Tighty. 

When your truss rod is completely loose, the neck should be straight with no curve. 
We will call this Zero Degrees of Relief.

Back Bow is also called Negative Degrees of Relief
Standard Relief can be measured in Positive Degrees of Relief. 

It is very unusual that one of our neck-thru models will need negative relief.  If you need to adjust your SINGLE ACTION truss rod for Back Bow, please follow these instructions carefully.

WARNING: Over-tightening your truss rod can break it.  This will void your instrument's warranty.  Please take caution when adjusting your instrument's truss rod.

  1. Remove the Strings.
  2. Remove the Truss Rod Cover.
  3. Loosen the Truss Rod with the appropriate 5mm Hex Key Wrench until the neck is at Zero Degrees Relief and the truss rod is free from the neck. 
  4. Carefully remove the truss rod from the neck, make sure to note which side of the truss rod is facing you, you can use a sharpie to make a mark on the truss rod nut.
  5. Once free from the neck, ROTATE THE TRUSS ROD 180 DEGREES and carefully reinsert it into the neck.
  6. Thread the truss rod back into the neck slowly to ensure you do not misthread it.  NEVER FORCE THE TRUSS ROD
  7. Carefully tighten the truss rod until the amount of BACK BOW is achieved.  BE CAREFUL TO NOT OVERTIGHTEN THE TRUSS ROD. 

If you are not comfortable with this procedure, DO NOT ATTEMPT TO ADJUST your truss rod.  Use our DEALER LOCATOR for the nearest SPECTOR® Dealer near you or take your guitar to a qualified luthier. 

 
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