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1. Remove the air hose from the paint gun so that it is easier to work on. 

2. Remove the E-clip and pin that secure the trigger to the paint gun. 
Remove the trigger from the paint gun.

3. Remove the lock screw from the back of the paint gun. This will allow 
you to remove the trigger valve assembly and needle. Be careful not to 
damage the needle when removing it from the paint gun assembly. 

4. Clean the needle and the inside of the paint gun thoroughly with 
the correct cleaner for your paint.

5. Re-assemble the needle, trigger valve and lock screw back onto 
the paint gun body.

6. Re-install the trigger and pin then secure them in place with the 
E-clip.

A good quality masking tape or Hobbico

®

 Master Mask

 are both 

good masking materials. The job should be evaluated and then 
decide which will work best for each situation. Make sure to properly 
seal the masking tape down to prevent bleeds. If using Hobbico 
Master Mask, make sure you follow the instructions on the container. 
Using too little of the Master Mask will cause problems when you try 
to remove it.

WARRANTY

 Model 

Maker

 warrants this product to be free from defects in 

material and workmanship for a period of one (1) year from the date of 
purchase. During that time, we will repair or replace, at our option, any 
product that does not meet these standards, You will be required to provide 
proof of purchase date (receipt with UPC proof-of-purchase or invoice).
 

If, during the one year warranty period, your Model Maker product 

shows defects caused by abuse, misuse, or accident, it will be repaired 
or replaced, at our option, at a service charge not greater than 50% of 
the current retail list price. Be sure to include your daytime telephone 
number in case we need to contact you about your repair.
 

Under no circumstances will the purchaser be entitled to 

consequential or incidental damages. 
 

This warranty gives you specific legal rights, and you may also 

have other rights, which vary from state to state. 
 

If you attempt to disassemble or repair this unit yourself, it may void 

the warranty. 
 

For service on your Model Maker product, either in or out of 

warranty, send it post paid and insured to:

Hobby Services

3002 N. Apollo Drive, Suite 1

Champaign IL 61822 USA

(217) 398-0007

www.hobbyservices.com

 

This warranty applies to USA and Canada only. For service in other 

countries, please inquire at the place of purchase. Customers residing 
outside the Usa and Canada who wish to have service performed at our 
USA service center will be responsible for all postage charges.

AFTER EACH USE

MASKING

PROBLEM: 

The paint gun does not spray when the trigger is pulled.

SOLUTION:

1. The paint may be too thick.
2. The PSI may be too low.
3. The paint gun may be clogged.

PROBLEM:

 The paint pulsates.

SOLUTION:

1. The nozzle is loose on the body.
2. The air hole in the top of the jar assembly is plugged.

PROBLEM:

 The trigger action is rough.

SOLUTION:

1. The needle is bent.
2. The paint gun needs cleaned.

PROBLEM:

 Paint bubbles in the color cup.

SOLUTION:

The paint gun is clogged.

PROBLEM:

 The paint sprays out grainy.

SOLUTION:

The paint is too thick. Gradually thin the paint using the proper solution.

PROBLEM:

 Splattering.

SOLUTION:

This is caused by letting the tip snap back into place. Always release the trigger gently.

 1 

HCAR4301

 BODY 

 2 

HCAR4302

 

COLOR CUP 22CC

 3 

HCAR4303

 CUP 

COVER

 4 

HCAR4304

 AIR 

TIP 

SEAL

 5 

HCAR4305

 FLUID 

TIP 

FINE

 6 

HCAR4306

 LOCK 

NUT

 7 

HCAR4307

 O-RING

 8 

HCAR4308

 

FLUID NEEDLE FINE

 9 

HCAR4309

 

FLUID NEEDLE SPRING

10 

HCAR4310

 NEEDLE 

O-RING

11 

HCAR4311

 TRIGGER 

VALVE

12 

HCAR4312

 VALVE 

SEAL

13 

HCAR4313

 SEALING 

SCREW

14 

HCAR4314

 VALVE 

SPRING

15 

HCAR4315

 

LOCK SCREW O-RING

16 

HCAR4316

 LOCK 

SCREW

17 

HCAR4317

 

 FLUID ADJUSTMENT SCREW 
O-RING

18 

HCAR4318

 

FLUID ADJUSTMENT SCREW

19 

HCAR4319

 

CUP ADAPTER SCREW

20 

HCAR4320

 CUP 

ADAPTER

21 

HCAR4321

 LOCK 

NUT

22 

HCAR4322

 TRIGGER 

RIVET

23 

HCAR4323

 TRIGGER

24 

HCAR4324

 CIRCLIP

25 

HCAR4325

 O-RING

26 

HCAR4326

 SEAL 

NUT

27 

HCAR4327

 

AIR FLUID LOCK SCREW

28 

HCAR4328

 

 AIR FLUID ADJUSTMENT 
SCREW

29 

HCAR4329

 PLUG 

SCREW

30 

HCAR4330

 

CUP FIXING SCREW

31 

HCAR4331

 

CUP FIXING SCREW O-RING

TROUBLE SHOOTING

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