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Ofna Racing DIRT OVAL Instruction Manual
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Ofna Racing DIRT OVAL Instruction Manual

1/8th scale nitro dirt oval late model body
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OFNA RACING
7 VANDERBILT
IRVINE, CA 92618
PHONE: (949) 586-2910
FAX: (949) 586-8812
MODEL SHOWN MAY BE PROTOTYPE AND MAY VERY SLIGHTLY FROM KIT. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.

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Summary of Contents for Ofna Racing DIRT OVAL

  • Page 1 OFNA RACING 7 VANDERBILT IRVINE, CA 92618 PHONE: (949) 586-2910 FAX: (949) 586-8812 MODEL SHOWN MAY BE PROTOTYPE AND MAY VERY SLIGHTLY FROM KIT. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 3 MUST READ THIS BEFORE RUNNING Running a nitro kit is fun and easy, but to make this a safe • Clean oil and dirt from chassis with a degreaser like Simple Green. and good experience you must observe a few rules. This kit is extremely fast, easily over 40MPH, and can seriously Precautions injure someone if you are not careful.

  • Page 4: Required For Operation

    REQUIRED FOR OPERATION THINGS NEED BESIDES THE KIT 3.5 cc (21 Class) ENGINE REAR EXHAUST OFNA/Picco P-9R EVO #51219 Glow Plug Long Heat with Battery & Charger # 10215..$27.95 (please note OFNA Glow Heats available) Glow Fuel Bottle’s with spout # 10160 - large 500cc # 10161 - large 500 ccAuto Stop # 10162 - small 250cc...
  • Page 5 ASSEMBLY OF THE FRONT AND REAR DIFF. Builds two differentials for front and rear. Step 1 Step 2 94034 30769 ..x2 4x4mm Set Screw 30780 30751 30777 30901 30777 ..x4 P5 O-Ring 30620 30620 30751 30780 2x12.8mm Pin ..x4 30901 30777 30769 30779...
  • Page 6 ASSEMBLY OF THE GEAR BOX AND FRONT SHOCK STAY Step 1 Step 2 5x4mm 94036 5x4mm ..x1 30010 Set Screw 30631 34043 30082 30631 6x13x5mm Apply Ball Bearing ..x2 Grease 30631 4x10mm 30130 30010 94009 ..x2 4x10mm Hex Screw 3x25mm 94023 3x25mm ..x2...
  • Page 7 ASSEMBLY OF THE FRONT KNUCKLE ARMS Assembly for both right and left side. Step 1 Step 2 *Notice the direction of the plastic washer. 36901 94036 5x5mm ..x2 Set Screw 36903 36052 * "L" for left side. 36055 2.5x16.8mm Pin ..x2 36905 36053...
  • Page 8 ASSEMBLY OF THE FRONT STABILIZER 3x3mm 94040 3x3mm 3x8x0.8mm ..x2 Washer 3x3mm Ensure Set Screw ..x2 Free Movement 94002 3x8mm ..x2 Hex Screw 30273 3x8x0.8mm 3x8mm ASSEMBLY OF THE SERVO SAVER 36740 36740 Step 1 Step 2 Step 3 3x16mm 94041 36740 36742...
  • Page 9 ASSEMBLY OF THE SERVO SAVER ONTO THE FRONT GEAR BOX 94041 ..x2 Nylon Nut 3x18mm 94003 3x10mm ..x2 3x10mm 40039 Hex Screw 94022 3x18mm ..x2 Flat Head Screw 3X18mm 40039 ASSEMBLY OF THE GEAR BOX AND REAR SHOCK STAY Step 1 Step 2 5x4mm 94036...
  • Page 10 ASSEMBLY OF THE REAR SUSPENSION ARMS Assembly for both right and left side. Step 1 Step 2 Approx. 3mm 2.5mm Hex 36055 94036 Wrench ..x2 36082 5x5mm Set Screw 36053 34054 5x5mm Approx. 2mm 31304 36053 30656 36053 8x16x5mm Ball Bearing ..x4 *Notice the direction of the plastic washer.
  • Page 11 ASSEMBLY OF THE REAR STABILIZER 94040 3x3mm 3x8x0.8mm ..x2 Washer 94033 ..x2 3x3mm Set Screw 94002 ..x2 3x8mm Ensure Hex Screw Free Movement 3x8x0.8mm 3x8mm 34027 ASSEMBLY OF THE ONE SPEED TRANSMISSION INTO THE CENTER MOUNT 10mm Step 1 35222 94036 30170 30201...
  • Page 12 ASSEMBLY OF THE FRONT GEAR CASE ONTO CHASSIS 94019 ..x2 3x10mm Flat Head Hex Screw 94026 4x12mm ..x2 Flat Head Hex Screw 94023 3x25mm ..x2 Flat Head Hex Screw 34042 3x10mm 4x12mm 3x25mm ASSEMBLY OF THE CENTER DIFF. ONTO CHASSIS *Insert the drive shaft into the cap joint before assembly center diff.
  • Page 13 ASSEMBLY OF THE STONE GUARD ONTO CHASSIS 34080 94019 3x10mm ..x6 Flat Head Hex Screw 3x10mm 3x10mm 3x10mm ASSEMBLY OF THE FRONT SERVO AND RADIO TRAY 3x10mm Step 1 Step 2 3x10mm 34026 Adjust 34026 Servo Washer according to the servo used. 94040 34026 3x8x0.8mm...
  • Page 14 ASSEMBLY OF THE RADIO TRAY AND RECEIVER BOX 30560 *Use the screw provided Step 1 with your switch 3x10mm 2x8mm Screw ..x2 3x10mm 30647 34032 3x10mm 94003 Step 2 3x10mm ..x6 Hex Screw 10282 Receiver Switch *Put the servo wire into receiver box and connect to Battery receiver.
  • Page 15 ASSEMBLY OF THE FUEL TANK ONTO THE CHASSIS Step 1 Step 2 3x10mm 3x8x0.8mm 3x8x0.8mm Washer ..x2 94040 Do Not 3x10mm Over Tighten Flat Head Hex Screw ..x2 94018 40066 3x8x0.8mm Pressure Nipple 94003 3x10mm Hex Screw ..x2 30646 3x10mm ASSEMBLY OF THE CLUTCH Step 2 Step 1...
  • Page 16 ASSEMBLY OF THE CLUTCH ONTO ENGINE MOUNT AND MUFFLER Step 1 Step 2 3x16mm 31989 94041 ..x4 Nylon Nut 10185 30481 ..x4 3x16mm Cap Screw ZIP TIE 31990 ZIP TIE *Slide the 3mm nylon nut into engine mount. 30480 ASSEMBLY OF THE ENGINE ONTO CHASSIS Note book Paper.
  • Page 17 ASSEMBLY OF THE THROTTLE LINKAGE Step 1 Step 3 30172 30802 2x4mm 94033 3x3mm ..x3 2x7mm Set Screw 30172 30802 3x3mm ..x2 2mm Nut 3x10mm 3x3mm 10300 2x25mm 30531 3x3mm 2x4mm 36140 Screw ..x1 30802 30802 2x8mm 10300 2x8mm Step 2 Screw ..x2 2x25mm...
  • Page 18 ASSEMBLY OF THE FRONT AND REAR SHOCKS Make 4 shocks for Front and Rear Step 1 Step 2 40634 40636 40640 40090 *Fit the o-ring into groove beforeassembly. 40090 40090 3.5mm O-Ring ..x8 40633 40090 40090 40090 1mm Washer ..x4 40090 * Fit the pressure top into the groove of the...
  • Page 19 ASSEMBLY OF THE FRONT SHOCK ABSORBER 3x25mm 94041 ..x2 Nylon Nut 94007 3x20mm ..x2 Hex Screw 40531 3x8mm 90018 ..x2 3x25mm Cap Screw 3x20mm Assembly for both right and left side. ASSEMBLY OF THE REAR SHOCK ABSORBER 94041 ..x2 Nylon Nut 94007 ..x2 3x20mm...
  • Page 20 ASSEMBLY OF THE FRONT BUMPER Choose the correct body post pin hole for your body. 33011 Step 1 Step 2 31159 94011 4x16mm ..x2 33011 Hex Screw 94028 33011 31159 4x20mm ..x4 Hex Screw 34090 33011 4x16mm 4x16mm 4x20mm ASSEMBLY OF THE AIR FILTER Step 2 Step 1 40128...
  • Page 21 ASSEMBLY OF THE TIRES AND WHEELS (Left Hand Side) *Notice the direction of the tires. *Pull back the tire bead slightly and spot glue in four spots as Make two the same for the left and 2 for the right. *Notice the direction shown.
  • Page 22 ASSEMBLY OF THE REAR WING Step 1 Step 2 Cut out the rear wing as shown. Cutting and making holes in the rear wing. Cut Out Cut Out Cut Out ASSEMBLY OF THE REAR WING Nylon Screw Nylon Screw ..x2 Body Reamer (Not included.) Nylon Nut...

  • Page 23: Starting Of The Engine

    MOUNTING BODY 31159 31159 31159 31159 STARTING OF THE ENGINE A 12V Starter and Starter Glow Plug (Not Included) 1.2V Glow Plug Igniter and How to start the engine: Ring ( Not Included) Charger (Not Included) 1. Turn on transmitter and then receiver. 2.
  • Page 24 OPERATING YOUR MODEL SAFELY While Running Cautions for Safety Before Running Engine Start-Up Check that the model turns in For engine use, refer to the Your radio control model can Do not run your model through proportion to the amount you manual included with the engine.

  • Page 25: Setting Guide

    SETTING GUIDE FRONT TOE-IN AND TOE-OUT SETTING Use a 5mm allen wrench to adjust toe-in for front .. Adjust the length of the front steering rod to change the toe angle. (Front) NEUTRAL POSITION Making the steering rod longer will make the front tires become toe-in.
  • Page 26 3 4 3 1 5 D I R T P R O L A T E M O D E L P A R T S L I S T O F N A D E S C R IP T IO N R E T A IL O F N A D E S C R IP T IO N R E T A IL...
  • Page 27 LATE MODEL UPGRADE...

  • Page 29: Owner's Registration Card

    The registration card should be filled out and mailed to OFNA Racing within 10 days of purchase date. In the event that the kit is incomplete or component parts are broken due to error in manufacturer, contact your dealer from which you purchased the kit for replacement part or call OFNA at (949) 586-2910 for your nearest dealer location.