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Post subject: Neck Question
Posted: Thu Apr 03, 2008 3:16 pm
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I noticed that I can use an allen wrench on my bass neck at the head stock. what is that for exactly?


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Post subject: Re: Neck Question
Posted: Thu Apr 03, 2008 3:49 pm
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woozie wrote:
I noticed that I can use an allen wrench on my bass neck at the head stock. what is that for exactly?


I think its for adjusting the neck.


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Posted: Thu Apr 03, 2008 9:19 pm
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It is the truss rod for adjusting your neck. If you don't know what you are doing or you don't feel comfortable messing with it, don't monkey with it. Take it to a luthier or your local Fender Authorized Dealer. 1/4 turns at a time and no more than 1/2 turn to allow the neck to readjust itself.


TRUSS ROD
First, check your tuning. Affix a capo at the first fret and depress the fourth string at the last fret. With a feeler gauge, check the gap between the bottom of the string and the top of the 8th fret—see the spec chart below for the proper gap.

Caution: Because of the amount of string tension on the neck, you should loosen the strings before adjusting the truss rod. After the adjustment is made, re-tune the strings and re-check the gap with the feeler gauge.

Adjustment at headstock (allen wrench): Sight down the edge of the fingerboard from behind the headstock, looking toward the body of the instrument. If the neck is too concave (action too high), turn the truss rod nut clockwise to remove excess relief. If the neck is too convex (strings too close to the fingerboard), turn the truss rod nut counter-clockwise to allow the string tension to pull more relief into the neck. Check your tuning, then re-check the gap with the feeler gauge and re-adjust as needed.

Adjustment at neck joint (phillips screwdriver): Sight down the edge of the fingerboard from behind the body, looking up toward the headstock of the instrument. If the neck is too concave (action too high), turn the truss rod nut clockwise to remove excess relief. If the neck is too convex (strings too close to the fingerboard), turn the truss rod nut counter-clockwise to allow the string tension to pull more relief into the neck. Check your tuning, then re-check the gap with the feeler gauge and re-adjust as needed.

Note: In either case, if you meet excessive resistance when adjusting the truss rod, if your instrument needs constant adjustment, if adjusting the truss rod has no effect on the neck, or if you're simply not comfortable making this type of adjustment yourself, take your instrument to your local Fender Authorized Dealer.

Neck Radius
7.25"
9.5" to 12"
15" to 17" Relief
.014" (0.35 mm)
.012" (0.3 mm)
.010" (0.25 mm)


Info taken from here http://www.fender.com/support/basses.php
Some more good info http://www.garywillis.com/pages/bass/ba ... anual.html


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