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ENGINE BREAK-IN AND TUNNING

(

BREAK-IN THE ENGINE BEFORE DRIVING THE CAR!)

OPTIONAL OFNA CAR STANDS

TUNING AFTER BREAK-IN

Idle adjuster screw &
Barrel Stop

 
Lean

Rich

• Choose a wide clear outdoor location with low dirt and dust.
• Set the car on box or holder with wheels off the ground.
• Turn on radio and car.  Make sure throttle is at idle position.
• Fill fuel tank and set master engine needle.
• Prime fuel line and Heat glow plug before pull starting engine.
• When started, let engine fast idle for two tanks of fuel.

Close master needle by turning clockwise until it stops.  
Then open needle by turning counterclockwise 3 turns 
(rich setting). 

When running car, adjust carb with 1/8 clockwise turns, 
slowly leaner, until the top speed good.  Check engine 
temp, if possible, for no more 250 degrees.

Adjust barrel stop so it will not close, accept for a small gap.  
This gap will be the idle setting.  You will notice the idle will 
increase with a wide gap.

Adjust low end needle for best throttle response.  Use only 
small turns.  From idle, give it full throttle, if throttle is slow 
lean out needle until good.

WOOD BLOCK

 

3 x 10mm Flat Head
                 Tapping Screw

3 x 15mm  Flate Head 
           Tapping Screw

3 x 20mm  Flat Head
           Tapping Screw  

3 x 25mm Flat Head 
           Tapping Screw 

3 x 25mm Tapping Screw

3 x 20mm Tapping Screw

3 x 15mm Tapping Screw

3 x 5 mm Flat Head
         Screw

3 x 10 mm Flat Head 
                  Screw

3 x 15mm Flat Head 
                 Screw

3 x 20mm Flat Head
                 Screw 

3 x 25mm  Flat Head
           Screw

3 x 5mm Tapping Screw

3 x 8mm Tapping Screw

3 x 5mm Cap Screw 

3 x 10mm Cap Screw

3 x 12mm Cap Screw

3 x 15mm Cap Screw

3 x 20mm Cap Screw

3 X 25mm Cap Screw

4 x 10mm Tapping Screw

4 x 15mm Tapping Screw

4 x 15mm Tapping Screw
                 ( Small Head ) 

4 x 20 Tapping Screw

4 x 25mm Tapping Screw 

4 x 20mm Flat Head 
                 Tapping Screw 

4 x 16mm Flat Head
                 Tapping Screw 

4 x 10mm Flat Head
                 Tapping Screw 

4 x 20 mm Flat Head Screw 
                      

4 x 15mm Flat Head Screw

4 x 10mm Flat Head Screw

4 x 6mm Flat Head Screw

3 X 8mm Washer

M3 Nut

5 X 9mm Washer 

5 X 10mm Washer

5 X 12mm Washer

2mm X 7mm Washer

2 X 6mm Washer

M4 Nut

M4 Nylon Kocknut

M3 Nylon Locknut

3 x 3mm Set Screw

3 x 5mm Set Screw 

3 x 8mm Set Screw

3 x 10mm Set Screw

3 x 15mm Set Screw 

4 x 4mm Set Screw

4 x 10 mm Set Screw

5 x 5mm Set Screw

3 x 30mm Screw Pin
                 ( Silver ) 

3 x 30mm Screw Pin
                 ( Black )

3 x 5mm Screw

3 x 10mm Screw 

3 x 15mm Screw

3 x 20mm Screw 

3 x 30mm Screw

2 x 10mm Screw

2 x 8mm screw

2 x 6mm Screw

2 x 5mm Screw

2 x 4mm Screw

2 x 25mm Screw

2.5mm E-Ring

2mm E-Ring

3 mm E-Ring

5 mm E-Ring

6 mm E-Ring

7 mm E-Ring

0              10             20             30             40             50

mm

0              10             20             30             40             50

mm

1:1 SCREW SHEET

4 mm E-Ring              

3 x 12mm Tapping Screw

3 x 10mm Tapping Screw

M3  Flange  Nut          
       ( Steel )

Summary of Contents for 9.5 RTR

Page 1: ...PURE COMPETITION OFNA Racing 22692 Granite Way Ste B Laguna Hills Ca 92653 949 586 2910 Www ofna com PRE ASSEMBLED ASSEMBLED CHASSIS WITH RADIO AND ENGINE RTR Instruction Manual...

Page 2: ...s Radio TX needs 8 eight AA batteries Car needs 4 four AA batteries Recommendation You may want to upgrade the car battery pack to a Ni Mh 5 cell Flat type This will give more run time You will need t...

Page 3: ...te the car indoors Engine exhaust is not off Fuel contains Methanol and Nitro Methane and is healthy flammable and poisonous Glow Fuel Store fuel in cool ventilated location Refer the glow fuel Glow f...

Page 4: ...ke rods pull brake levers Full throttle arm position Spring rod pulls throttle barrel open and brake rods release pressure on brake cams IMPORTANT CHECK RADIO THROTTLE AND STEERING SWITCHES BEFORE RUN...

Page 5: ...ES ABOVE Notes Non Pull Start Engines Alum Washer behind the flywheel is not needed when using Force engines or similar types O S Engines will require washer spacer To check place the brass corn 10330...

Page 6: ...2mm Tie Rod End 2mm Tie Rod End 2x6mm Washer 2x6mm Washer 2x4mm Screw 2x4mm Screw Screw Cement ALIGN THROTTLE SERVO AND BRAKE SAME AS SHOWN Brake is not on Engine at idle Neutral Position Brake is on...

Page 7: ...r To start the engine use hand held starter motor or starter box 10250 Starter Box ASSEMBLY OF THE TIRES FOAM INSERTS AND WHEELS 86044 Red 86045 White 86046 Lime 86047 Yellow 17mm 5 Star Wheels 86091...

Page 8: ...ine When started let engine fast idle for two tanks of fuel Close master needle by turning clockwise until it stops Then open needle by turning counterclockwise 3 turns rich setting When running car a...

Page 9: ...ead Tapping Screw 4 x 10mm Flat Head Tapping Screw 4 x 20 mm Flat Head Screw 4 x 15mm Flat Head Screw 4 x 10mm Flat Head Screw 4 x 6mm Flat Head Screw 3 X 8mm Washer M3 Nut 5 X 9mm Washer 5 X 10mm Was...

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