Mod WAHTZ WAH K-985 Manual Download Page 13

TIP LUG

TIP 

LUG

GROUND 

LUG

1

2

3

4

5

7

8

9

10

11

12

14

15

16

103K

400V

1.5K

103

K

4

00V

470K

47

0K

1K

10K

22
K

270

.22

µ

E

B

C

MP

S

A1

8

Q2

MP
S

A1
8

E

B

C

Q1

1"

13

Installing the Foam Battery Cushion

Locate the remaining piece of double sided foam tape and the gray foam battery cushion.  This 
will be installed to keep the battery in place.

Remove the backing from one side of the foam tape and attach to the inside of the wah base at 
the heel end roughly centered about 1" away from the rear edge as shown by the rectangle in 
the drawing below.

Remove the remaining backing of the foam tape and place the foam block over the tape so the 
angled corners just clear the screw holes.  Press down on the middle of the foam block to make 
sure it is firmly secured to the base.

Install a fresh 9 volt battery and lay it over the gray foam block.  Place the bottom cover over the 
base and attach the base using the feet and their mounting screws.

Fixing a Squeaky Wah

If you find that your wah pedal is squeaking when you rock the 
treadle, try squirting WD40 into the four junctions where the 
bearing pin meets the bearing pin mounts.

Adjustment of the Footswitch Height

If you find that the 

footswitch engages too easily

while rocking the treadle back and forth with 

your foot, you can lower the height of the footswitch by swapping the location of the large nylon 
washer and the lock washer.

If you find that the 

footswitch does not engage

when pressing the toe-end of the treadle all the 

way down with your foot for bypass mode, you can raise the height of the footswitch by removing 
the lock washer from the switch altogether.

Wah Base

Nylon Washer

Hex Nut

Outside

Inside

Wah Base

Lock Washer

Nylon Washer

Hex Nut

Outside

Inside

Wah Base

Lock Washer

Nylon Washer

Hex Nut

Outside

Inside

Lower

Raise

BASE 

OUTER 

SURFACE

Mount

Mount

Four Junctions

Summary of Contents for WAHTZ WAH K-985

Page 1: ...d the long life potentiometer manufactured specifically for use in wah pedals is included to provide years of smooth quiet operation Point to point construction allows advanced kit builders to easily...

Page 2: ...Allen Wrench to tighten the tension adjustment screw 12 mm Wrench to fasten the wah pot in its mounting bracket Contact Cement or other adhesive to secure the tread and pedal bumpers TABLE OF CONTENT...

Page 3: ...in 1 Rear Bumper 1 Front Bumpers 2 Bottom Cover 1 Wah Base 1 Treadle 1 Rubber Tread 1 Mounting Screws 2 M4 x 0 70 L 16 mm Rack Assembly Parts Rack 1 Small Screw 1 M3 x 0 5 L 12 mm Hex Nut 1 M3 x 0 5 S...

Page 4: ...H Terminal Strip with 8 Terminals P 0802H 2 Terminal Strip with 2 Terminals P 0201H 1 Terminal Strip with 5 Terminals P 0501H 1 DPDT Foot Switch P H498 1 Battery Clip S H155 1 4 Screws 3 8 long S HS44...

Page 5: ...k red gold 1K R A1D5K 1 1 5k Resistor W brown green red gold 1 5K R A10K 1 10k Resistor W brown black orange gold 10K R A22K 1 22k Resistor W red red orange gold 22K R A33K 1 33k Resistor W orange ora...

Page 6: ...e a good solder joint Take your time with each connection and make sure that all components are connected and will remain connected if your project is bumped or shaken Bend the component lead or wire...

Page 7: ...er holders at the toe end This will cushion the footswitch when turning the pedal on and off Front Bumper Holders Remove the backing from the rear bumper and mount it in the hole on top of the holder...

Page 8: ...w with your fingers until its head is flush with the back of the L bracket Do NOT tighten this screw yet Slide the bearing pin out and set it aside The pillow block is now aligned for final assembly B...

Page 9: ...f the adjustment screw with a 5 mm Allen wrench so that the treadle stays in place when you remove your foot and so that it suits your playing preference Base Assembly Looking at the inside surface of...

Page 10: ...terminal 4 to pot lug 3 Do NOT solder the pot connection yet 8 Strip and tin a 1 piece of wire and connect pot lug 3 to footswitch lug 6 Now solder the pot connection 9 Strip and tin a 4 piece of wir...

Page 11: ...f the wire and crimp it around the terminal with needle nose pliers 5 Connect the 33K resistor to terminals 20 and 21 6 Connect the 4 7 F cap and 100K resistor to terminals 19 and 21 Make sure the neg...

Page 12: ...the full counter clockwise position If you measure the electrical resistance between pot lugs 1 and 2 with an ohm meter at this setting you should be measuring the pot s minimum resistance i e close t...

Page 13: ...ay foam block Place the bottom cover over the base and attach the base using the feet and their mounting screws Fixing a Squeaky Wah If you find that your wah pedal is squeaking when you rock the trea...

Page 14: ...Output Jack Input Jack DRAWING 1 RING LUG TIP LUG DC Power Jack GROUND LUG TIP LUG GROUND LUG INSIDE VIEW OF THE BASE ENCLOSURE 14...

Page 15: ...ut Jack Input Jack DRAWING 2 RING LUG TIP LUG DC Power Jack GROUND LUG TIP LUG GROUND LUG INSIDE VIEW OF THE BASE ENCLOSURE 1 2 3 4 5 6 1 2 3 17 18 20 21 22 23 1 2 3 4 5 6 7 8 19 9 10 11 12 13 14 15 1...

Page 16: ...GROUND LUG TIP LUG GROUND LUG INSIDE VIEW OF THE BASE ENCLOSURE 1 2 3 4 5 6 1 2 3 17 18 20 21 22 23 1 2 3 4 5 7 8 19 9 10 11 12 14 15 16 22 33K 4 7 F35V 68K 103K 400V 1 5K 103K 400V 470K 470K 1K 10K...

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