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Parts list   

When ordering parts, specify gun’s model, part name with ref. No. and 

marked No. of air cap set, fluid nozzle and fluid needle. 

When replacing fluid nozzle or/and fluid needle for pressure feed 

application, please order nozzle needle set. 

 

 

 

Troubleshooting 

   

Spray Pattern 

Problems 

Remedies 

 Fluttering 

1. Air enters between fluid nozzle and tapered seat of gun body. 
2. Air is drawn from fluid needle packing set.. 
3.Air enters at fluid container fitting nut or fluid hose joint. 

1. Remove fluid nozzle to clean seat.

  I

f it is damaged, replace nozzle. 

2. Tighten fluid needle packing. 
3. Fully tighten joint section. 

 Crescent 

1. Paint buildup on air cap partially clogs horn holes. 

Air pressure from both horns differs. 

1.

 

Remove obstructions from horn holes with attached brush. 
But do not use metal objects to clean horn holes. 

  

nclined 

1. Paint buildup or damage on fluid nozzle circumference and air cap 

center. 

2. Fluid nozzle is not properly fitted. 

1. Remove obstructions.   

Replace if damaged. 

2. Remove fluid nozzle and clean seat section. 

  Split 

1. Paint viscosity too low. 
2. Fluid output too high. 

1. Add paint to increase viscosity. 
2.

 

Tighten fluid adj. knob to reduce fluid output. 

Or turn pattern adj. valve set clockwise. 

  Heavy Center 

1. Paint viscosity is too high. 
2. Fluid output is too low. 

1.

 

Add thinner to reduce viscosity. 

2.Turn fluid adj. valve knob counter-clockwise to increase fluid output. 

    Spit 

1. Fluid nozzle and fluid needle set are not seated properly. 
2.The first-stage travel of trigger

 

(when only air discharges) decreases. 

3. Paint buildup inside air cap set. 

1.

 

Clean or replace fluid nozzle and fluid needle set. 

2.

 

Replace fluid nozzle and fluid needle set. 

3. Clean air cap set. 

R1

retighten   R2

adjust    R3 :

 

clean    R4 : replace parts 

Remedy 

Problem 

Where it 

occurred 

Parts to be checked 

Cause 

R1 

R2 

R3 

R4 

Air valve 

* Dirt or damage on seat   

 

 

 

 

* Dirt or damage on seat   

 

 

 

 

Air valve seat set 

* Wear on air valve spring 

 

 

 

 

Air leaks 

(from tip of air cup) 

Air

 

valve set 

O ring 

* Damage or deteriorated 

 

 

 

 

* Dirt, damage, wear on seat 

 

 

 

 

* Loose fluid needle adj. knob 

 

 

 

 

Fluid nozzle 

 fluid needle set 

* Wear on needle spring 

 

 

 

 

* Insufficient tightening   

 

 

 

 

Fluid nozzle

gun body 

* Dirt or damage on seat   

 

 

 

 

* Needle does not return due to packing set too tight 

 

 

 

 

Fluid nozzle 

Fluid needle

packing set 

* Needle does not return due to paint buildup on fluid needle 

 

 

 

 

Needle packing set

needle set 

* Wear 

 

 

 

 

Paint leaks 

Fluid needle 

Packing seat 

* Insufficient tightening   

 

 

 

 

Fluid adj. knob 

* Insufficient opening   

 

 

 

 

Tip hole of nozzle 

* Clogged   

 

 

 

 

Paint does not   

come out 

Tip of gun 

Paint filter 

* Clogged 

 

 

 

 

 

 

 

Fluid nozzle-fluid needle set combination 

Fluid nozzle 

Fluid needle set 

Orifice

  φ

mm(in) 

Mark 

Mark 

φ

1.0 (0.039) 

W101/T10 

10008 

φ

1.3 (0.051) 

W101/13 

10013 

 

Manual No.T033-05 
Code No.03741612

 

3176, Shinyoshida-cho, Kohoku-Ku, 
Yokohama 223-8501, Japan 

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