Ofna Racing Titan Monster Track 4WD User manual

INSTRUCTION MANUAL
PLEASE READ INSTRUCTIONS CAREFULLY BEFOREASSEMBLING
THIS MODEL.
KEEP THIS MANUAL FOR PARTS NUMBERS WHEN ORDERING.

REQUIRED FOR OPERATION
THINGS NEEDED
AA Batteries ( 12 pcs )
Glow Fuel
20%
Cross Wrench
#17109 $3.95
You need to get batteries for the radio transmitter and the car receiver
packs.
• Radio TX needs (8) eight AAbatteries.
• Car/Truck needs (4) four AA Ni-cad batteries, Alkaline type batteries
will work, but braking will be reduced. The best is to use a 5 cell hump
pack for increased voltage..
Recommended Option:
You may want to upgrade the car battery pack to a Ni-Cad or NiHm 5
cell type(600AE). This will give more run time. OFNA #10212
You will need to buy a few items to start the engine and run the car.
• Use 20% nitro CAR fuel. Do not use airplane or heli fuels, they will
over heat engine.
• Buy LONG glow plugs, like OFNA/PICCO Plug (#51007). Use plugs
without idle bar. Do NOT use plugs, like the MC-59 or OS-8
In your box you will find..
• #10163 - Bottle, spout top
• #10218 - Red “C” size glow heater
#10212 NiHm Hump Pack,
see charger 10214.
10214
Over-nite
Charger
TOOLS NOT INCLUDED IN KIT INCLUDED WITH KIT
Shock Oil
1.5mm
Hex Wrench
Grease Box
Phillips Type Screw Drivers ( L )
Phillips Type Screw Drivers ( S )
Needle Nose Pliers
Cutter
Curved Scissors
Knife
Super Glue
Precision Caliper
2.5mm
Hex Wrench
3mm
Hex Wrench
5mm
Hex Wrench
7mm and 5.5mm
Hex Wrench
Wheel Nut
Wrench

MUST READ THIS BEFORE RUNNING
Running a nitro kit is fun and easy, but to make this a safe rusting.
• Clean oil and dirt from chassis with a degreaser.
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. • This kit is not a toy. Always run car with a second
person as a spotter and pitman.
Where to run car?
• Any running area you choose must be dry. Do not run • Hot Parts - The pipe, manifold, engine and head are very
car near any water or wet dirt. hot and will cause burns.
• Do not run on public streets. It is very easy to have the
car run over or damaged by hitting the curb. • Rotating Parts - Keep hands away from the drive train,
• Do not operate car in tight confined places. The car is wheels, and engine when engine is running.
very fast and will easily hit something.
• Do not run near people or animals. • Radio - Check batteries life before running the car. If
radio does not have full control of the car with steering
• Due noise, you will want to consider the surrounding and/or throttle/brake do not run until corrected. Failure to
area when operating the car. correct this will result in possible injury and damage to the
• Do not operate the car at night. You will not be able to car or property.
drive it without hitting something.
• Do not operate the car indoors. Engine exhaust is not • Glow fuel - Do leave the glow fuel unattended with the lid
healthy. off. Fuel contains Methanol and Nitro Methane and is
flammable and poisonous.
Glow Fuel
• Glow fuel is poisonous! Store fuel in cool ventilated location. Refer the glow fuel
• Glow fuel is flammable!
• Do not leave in fuel bottle with lid off at any time. label for additional precautions.
• Do not use any fuel other than glow fuel in this engine. • Car Fuel tank - Never store fuel in car tank, it will ruin the
First Time Starting the Engine engine if left in tank.
Caution! When starting engine make sure the following is
observed. • Always turn off the car BEFORE turning off radio.
• Set engine Master needle to 3 turns (rich setting)
• Do not do this alone, get an experienced friend to help at • DAMAGE DUE CAR RUN AWAY IS NOTAWARRANTY
first. ISSUE.
• Fill fuel tank, try not to spill fuel. Do not spill fuel on
receiver IF YOU DO NOT BREAK-IN ENGINE
• Hold car off the ground, so it will not runaway when first CORRECTLY, MAINLY AT LOW RPM,
starts
• Turn on Radio and check the linkage before starting YOU WILL BREAK THE CONNECTING
engine. ROD!
• Turn on car receiver battery switch.
• Always have an air filter on the carburetor to keep dirt
out. FAILURE TO NOT READ AND
Engine Break-in FOLLOW BREAK-IN ENGINE
• See Engine Page.
Emergency Stopping Engine When Running INSTRUCTIONS WILL VOID
• Remove air filter and cover carb. intake.
• Squeeze fuel line and hold until engine stops. WARRANTY!
• With a rag, cover exhaust outlet.
Storing Car After Running CHECK RADIO SETTING AND
• Remove fuel from tank and fuel lines
• Turn off radio in car LINKAGE BEFORE STARTING
• Put a few drops of after run in engine to keep it from
The car is very fast
and will too easily hit someone.

A
B
C
CHECKING ENGINE THROTTLE
* Insert into transmitter.
1. Insert AA batteries into
transmitter (8 Pcs).
2.Turn on transmitter.
3.Turn on receiver.
4.Center throttle trims as
shown .
ABC
1. Pull Full Throttle. 1. Push trigger to full
brake position.
2. Adjust alum. Stopper to
increase or decrease
the brake.
Idle Position (A)
Brake (C)
Full Throttle (B)
* Align throttle servo same
as shown.
A
B
C
• Full brake arm position.
Spring compresses
forward and brake 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 RUNNING CAR
Insert 8 pcs AA batteries into transmitter.
Note:
Battery life is short when using Alkaline batteries. For safety, we
recommend checking Alkaline batteries after 30 minutes. Battery
strength affects radio range; in the case of a monster truck, it affects
brake power. If voltage drops while running the car, you will loose
control and destroy your car! This is NOT covered under warranty.
To increase run time, upgrade receiver batteries to AA Ni-Cad or
NiMH type. But, the most important step you can make, “is to
always use fully charged or fresh batteries when running your car”.
The beat performance is achieved by changing to a 6 volt 5 cell
hump pack, OFNA #10212. The servo have their greatest power at
6 volts.
Radio shown may vary depending on
availability. Therefore radio pictured on
box may or may not be the same.

40003
Diff. Case 40017
Front and Rear Gear Boxes
PLASTIC PARTS
36901
Front Knuckles, Pivot Ball
40031
Servo Saver Plastic Tree
40056
Plastic Shock Parts Tree
40201
Front and Rear Upper Arms
31304
Rear Hub,
Pivot Ball
40202
Front and Rear Lower Arms.
40204
Chassis Skip Plate
40203
Shock Tower part 40205
Arm Holder/Center Diff. Mount /Side Chassis Brace
Plastic Parts
40207
Bumper Mounts 40206
Chrome Roll Bar
Plastic Parts(w/spot light)
40040
Center Diff Mount Tree

ASSEMBLY OF THE DIFFERENTIAL
40006
Cap Joint
40006
Cap Joint
30701
4x4mm
Set Screw
40010
2.5x13.8mm
Pin
40010
2.5x13.8mm
Pin
36053
8x16mm
Bearing
36053
8x16mm
Bearing
36053
8x16mm
Bearing
36053
8x16mm
Bearing
( Builds two differentials for front and rear.)
40009
P6
O-Ring
40009
P6
O-Ring
40012
6x15mm
Washer
40012
6x15mm
Washer
40004
Diff.Gear
(Large)
40004
Diff.Gear
(Large)
40003
Diff. Case
40004
Diff. Gear
(Small) 40004
Diff. Gear
(Small)
Option:
49001 - Gears, HD Steel
Note: Diff must always use
gear shim. If no shims are used,
we have found that diff may break.
30779
4 x 10mm
washer
30779
4 x 10mm
washer
30779
4 x 10mm
washer
30773
4mm
Cross pin
30773
4mm
Cross pin
Note:
- Add grease into diff case before closing.
*Put the O-ring
in inside of the diff. case
and press it flush against
the bottom.
40011
Diff. Gasket
3x12mm
Flat Head
Tapping Screw
40214
Large
Bevel Gear
40214
Large
Bevel Gear
ASSEMBLY OF THE GEAR BOX
( Builds two gear box for front and rear.)
40017
Gear Box
40017
Gear Box
49012
13T
Bevel Gear
(l)Smal
40024
13x16x0.2mm
Shim
Note: ALWAYS USEOR ADD MORE!
Adjust gear mesh by using#40024 shims. Add
shim to either side for mesh. Recommend a
tight feel but not binding or loose.
No need to add shims to
this side. Loosening gear
mesh will only cause gear
to skip.

ASSEMBLYOF THEFRONT ARMSHOLDER
4X15MM
Tapping Screw
( Small Head)
4X45MM
Tapping Screw
( Small Head)
40022
Front Lower Arm
Holder (Front/Alum.)
Screw Cement
90026
5x5mm
Set Screw
36730
Cap Joint
4x16mm
Flat Head
Tapping Screw
4x16mm
Flat Head
Tapping Screw
40015
Front Lower Arm
Holder (Rear/Plastic)
40015
Front Upper Arm
Holder ( Rear/ Plastic)
3x12mm
Tapping Screw
4x15mm
Screw
(Small Head)
40205
Upper Arm
Holder
Option:
49002
CNC 7075
Front Lower Arm
Holder
ASSEMBLYOF THEFRONT KNUCKLE ARMS
36905
Plastic Washer
36905
Plastic Washer
36903
14mm
Steering Ball
36903
14mm
Steering Ball
36904
14mm
Alum. Nut
36904
14mm
Alum. Nut
( Left-Side )
( Right- Side )
36901
Ball Type
Knuckle Arm
36901
Ball Type
Knuckle Arm
40242
Misc. Screws and Hardware
Note:
Thread nut into knuckle straight,
do not cross thread.
Do not over tight Nut. Adjust nut
for smooth movement. If too
tight, knuckle will not turn.

Screw Cement
Screw Cement
ASSEMBLYOF THE FRONT CVA JOINTs
36052mm
CVA Joint
36052
8mm
CVA Joint
36053
8x16mm
Ball bearing
36053
8x16mm
Ball bearing
40245
Hex Hub,
Orange
Spare:
15073
Nut, Hex Hub,
Orange
36053
8x16mm
Ball bearing
36053
8x16mm
Ball bearing
36054
8mm Alum.
Wheel Hub
36055
2.5x17mm
Pin
36055
2.5x17mm
Pin
90026
5x5mm
Set Screw
5x5mm
Set Screw
90021
3mm
E-Ring
90021
3mm
E-Ring
90020
2.5mm
E-Ring
90020
2.5mm
E-Ring
40226
Upper
Arm Shaft
40023
Lower
Arm Shaft
40201
Upper Arm
40202
Lower Arm
ASSEMBLYOF THEFRONT SUSPENSION ARM
4X16mm
Flat Head
Screw
40235
Lower Chassis
40239
Servo Saver
Post
4x10mm
Flat Head
Screw
* Insert the driveshaft
into diff. cap joint before
assembly.

ASSEMBLYOF THE
SERVO SAVER ASSEMBLYOF THE SERVO SAVER UNIT
ASSEMBLYOF THESERVO SAVER ONTOLOWER CHASSIS
40035
Alum.
Servo Saver
Tube
40031
Servo Saver
Horn Plastic
40031
Servo Saver
Horn Plastic
40033
Servo Saver
Spring
40034
Servo Saver
Adjuster
40037
Steering Plate
Hex Screw
40037
Steering Plate
Hex Screw
40031
Servo Saver
Plastic Bushing
40031
Servo Saver
Plastic Bushing
4x8mm
Plastic Bushing
4x8mm
Plastic Bushing
40032
Servo Saver
Connecting Plate
49006
CNC Servo Saver
Connecting Plate
ASSEMBLYOF THESTEERING RODS
ASSEMBLYOF THESERVO SAVER ANDSTEERING RODS
40039
3mm
Cone Washer
35313
3mm
Nylon Nut
35313
3mm
Nylon Nut
35313
3mm
Nylon Nut
36850
7mm
Ball End
36850
7mm
Ball End
36700
Steering
Ball End
36790
4x46mm
Turnbuckle
* Made two steeringrods for leftand right hand side.
3x15mm
Screw
3x12mm
Flat Head
Screw
3x12mm
Flat Head
Screw
Option: 49014
Servo Saver Alum.Tube
( Ball bearing Type )
* Place the servosaver into
the servo post.
* Take the 4x8mm Plastic Flange bushing
and Plastic Bushing from servo saver plastic
parts tree

36860
5x35mm
Turnbuckle
40201
Upper Arm
36850
7mm Ball 36690
7mm
Plastic
Ball End
ASSEMBLYOF THEREAR UPPER ARM
31307
11mm
Ball & Screw
31304
Rear Hub
( Ball Type )
31305
Plastic Washer
31306
12mm
Alum. Hex Screw
Screw Cement
20245
Wheel Hub,
Orange
36055
2.5x16.8mm
Pin
36081
8mm
Rear Wheel Axle
36053
8x16mm
Ball bearing 36053
8x16mm
Ball bearing
40215
Rear
Drive Shaft
(91.5mm)
40215
Rear Drive Shaft
(91.5mm)
40023
4mm
Lower Arm
Shaft
30702
3x25
Hex Screw
35313
M3
Nylon Nut
90020
2.5mm
E-Ring
90020
2.5mm
E-Ring
90021
3mm
E-Ring
3mm
E-Ring
Upper Arm
Washer
ASSEMBLYOF THEREAR HUB
ASSEMBLYOF THEREAR HUB
AND SUSPENSIONARMS
INTO GEARBOX
Assembly of the right and left hand side
are the same.
Assembly of the right and left hand side
are the same.
Assembly of the right and left hand side
are the same.
90026
5x5mm
Set Screw
*Builds two arms forleft and righthand side.
*Builds two hubs forleft and righthand side.
8mm
*Insert the rear driveshaft before assembly
the rear lower arm.
40202
Rear Lower Arm
90021
Note: This Axles part is not needed
if your kit has CVA joint for rear instead.

ASSEMBLYOF THE FRONT GEAR BOX ONTO
UPPER CHASSIS
4X16mm
Flat Head
Tapping Screw
35314
M4
Nylon Nut
35314
M4
Nylon Nut
35314
M4
Nylon Nut
4x15mm
Screw
4x15mm
Screw
40205
Center Diff. Mount
ASSEMBLYOF THEFRONT SHOCK TOWER
3x16mm
Tapping
Screw
4x25mm
Screw
4x16mm
Tapping Screw
40040
Center Brace
Mount ( Front )
4x10mm
Flat Head
Screw
40234
Main Chassis
40203
Shock Tower

4x16mm
Flat Head
Tapping Screw
4x10mm
Flat Head
Screw
Rear Gear Box
Assembly
3x15mm
Tapping Screw
40203
Shock Tower
40040
Center Brace
Mount ( Rear )
35314
M4
Nylon Nut
ASSEMBLYOF THETWO SPEED GEAR
ASSEMBLYOF THEREAR GEAR BOX ONTO
UPPER CHASSIS
ASSEMBLYOF THEREAR SHOCK TOWER
35245
45T Spur Gear
35249
49T Spur Gear
35229
18mm
E-Ring
35230
8x12mm
Flange
Ball bearing 35230
8x12mm
Flange
Ball bearing
35226
2nd Spur Gear
Holder
35225
1st Spur Gear
Holder
35228
Alum. Nut
(Anti-clockwise)
4x25
Screw
4x15
Tapping
Screw
Option:
40241 - 2-Speed Trans. W/
Steel Gears.
40247 - Gear, Steel 47T
40251 - Gear, Steel 51T

40219
3X13.8mm
Pin
40219
3X13.8mm
Pin
ASSEMBLYOF THESLIPPER CLUTCH
ASSEMBLYOF THETWO SPEED TRANSMISSION
30170
Brake Joint 36053
8x16mm
Ball bearing
36053
8x16mm
Ball bearing
36053
8x16mm
Ball bearing
40208
28T Helical
Gear
40218
8x12x1mm
Washer
* Use 3 pcs.
90026
5x5mm
Set Screw
90026
5x5mm
Set Screw
90026
5x5mm
Set Screw 35227
2 Speed
Clutch Cam
40217
Center Gear
Shaft
1st Gear
Assembly
2nd Gear
Assembly
Type 1: Use for slipperclutch.
Type 2: Disable Slipper
Add pin (40219) ontoshaft
to lock out slipperfunction.
40220
Slipper Clutch
Shaft
40223
Slipper Clutch
Plate
40223
Slipper Clutch
Plate
40224
Slipper Clutch
Gasket
40224
Slipper Clutch
Gasket
40209
38T
Helical Gear
ASSEMBLYOF THEBRAKE PADS
36660
Brake Shoe
Plate
36661
Brake Pad
Linings
Front Middle Rear
* Remove the double-sidetape
before assembly
40045
Brake Pad
Adjustment Screw
Brake Pad
Assembly
40044
Brake Pad
Spring
40044
Brake Pad
Spring
Less 2.5mm
* Sett the adjustmentscrew
to keep the spaceof the brake
pad less 2mm.
36730
Cap Joint
Screw
Cement
36053
8x16mm
Ball bearing
4x4mm
Set Screw 90026
5x5mm
Set Screw
40222
Slipper Clutch
Spring
40221
Slipper Clutch
Adjuster
36730
Cap Joint
40040
Center Diff.
Mount
* Don't use Screw
cement in 4x4mm
set screw.
Add pin (40219) ontoshaft
to lock out slipperfunction.

ASSEMBLYOF THE2 SPEED TRANSMISSION INTOCENTER MOUNT
36650
Brake Disk
40040
Center Diff.
Mount
40040
Center Diff.
Mount
40040
Center Diff.
Mount
40216
Center
Drive Shaft
( Long/93mm )
40216
Center DriveShaft
( Long/93mm)
40216
Center
Drive Shaft
(Short/86.5mm )
40216
Center Drive Shaft
(Short/86.5mm )
* Put the brakedisk
into the brake capjoint
before assembly the
center diff. mount.
40225
Center
Diff. Mount
Post
40225
Center
Diff. Mount
Post
* Put the centerdiff. mount post
through the center diff.mount.
ASSEMBLYOF THEBRAKE CAM
AND CENTERDIFF. MOUNTPLATE
30213
Brake Cam
30211
Brake,
Bushing
Option:
30212
Brake
5x8mm
Bearing
3x15mm
Screw
40237
Alum. Center
Diff. Plate
40237
Alum. Center
Diff. Plate
3x3mm
Set Screw
30171
Brake Level
*Screw in 3x15mm screw
for temple use.
* Put the centerdrive shaft before assemblythe
slipper clutch unit.

35313
M3
Nylon Nut
35313
M3
Nylon Nut
3x15mm
Flat Head
Screw
3x16mm
Flat Head
Screw
3x16mm
Flat Head
Screw
3x16mm
Flat Head
Screw
3x16mm
Flat Head
Screw
3x25mm
Cap Screw
3x15mm
Screw
3x15mm
Screw
ASSEMBLYOF THEUPPER CHASSIS BRACE
40212
43.9mm
Chassis Stiffener
( Rear/lowe/Long)
ASSEMBLYOF THE LOWER CHASSIS BRACE
40213
35.7mm
Chassis Stiffener
( Front/lowe/Short)
30411
6mm Ball
30411
6mm Ball
30411
6mm Ball
30411
6mm Ball
30411
6mm Ball
30411
6mm Ball
40200
6mm Plastic
Ball End
40200
6mm Plastic
Ball End
40200
6mm Plastic
Ball End
40200
6mm Plastic
Ball End
40200
6mm Plastic
Ball End
40200
6mm Plastic
Ball End
ASSEMBLYOF THEUPPER BRACE
INTO CHASSIS
40203
Center
Brace mount
40210
95.5mm
Chassis Stiffener
(Rear/Upper/Long)
40211
87.5 mm
Chassis Stiffener
(Front/Upper/Short)

3x15mm
Tapping Screw
3x15mm
Tapping Screw
3x15mm
Tapping Screw
3x15mm
Tapping Screw
40207
Bumper
Support
40207
Bumper
Support
40207
Bumper
Support
ASSEMBLYOF THE BUMPER SUPPORT PARTS

ASSEMBLYOF THESHOCK ABSORBER
* Made eightshocks for frontand rear use.
40076
Shock Body
40090
7mm
E-Ring
40090
Washer
(2mm)
40090
Washer
(1mm)
40090
3.5mm
O-Ring
40059
14.7mm
O-Ring
40054
Shock Shaft
2.6x5mm
Washer
32235
Shock Piston
40060
2.5mm
Nylon Nut
3. Pull down piston, attach pressure top
and shock oil overflow with tissue
paper.
1. Pull down piston and pour
oil into shock cylinder.
*Move Slowly.
32033
Pressure Top
40093
Shock Cap
*Fit into the groove.
down.
UP
ASSEMBLY THE DUST COVER AND SHOCK SPRING
40058
Shock Shaft
Dust Cover
2.To remove air bubbles by slowly
moving piston up and down.
FILL THESHOCKS WITHOIL
* Push 6mm ball joint
into ball end.
40243
Shock Spring,
Black
40063
Spring Holder
30411
6mm Ball
40059
14.7mm
O-Ring
* Fit the o-ringinto
groove.
40056
Shock Plastic
Rod End
49041
Alum.
Adjust Nut,
Orange

ASSEMBLYOF THEFRONT ANDREAR SHOCK
INTO SHOCKTOWER
3X15mm
Screw
3X15mm
Screw
3X15mm
Screw
3X15mm
Screw
3X15mm
Screw
3X15mm
Screw
3X15mm
Screw
3X15mm
Screw
3x8mm
Washer
3x8mm
Washer
3x8mm
Washer
3x8mm
Washer
30411
6mm Ball
30411
6mm Ball
30411
6mm Ball
30411
6mm Ball
Shock Assembly

4x20mm
Flat Head
Tapping Screw
4x20mm
Flat Head
Tapping Screw
3x12mm
Tapping Screw
3x12mm
Tapping Screw
40204
Skip Plate
40204
Skid Plate
3x20mm
Flat Head
Tapping Screw
3x20mm
Flat Head
Tapping Screw
3x20mm
Flat Head
Tapping Screw
3x20mm
Flat Head
Tapping Screw
ASSEMBLYOF THEFRONT ANDREAR
CHASSIS SKIPPLATE
( FRONT )
(REAR )

* Put the M4nylon nut into theside chassis
brace plastic before assembly
next step. for
ASSEMBLYOF THESIDE PLATE MOUNT
40205
Side Chassis
Brace Plastic 35314
M4 Nylon
Nut
M4x10
Flat Head
Screw
ASSEMBLYOF THEFUEL TANK
40066
Fuel Tank
3x10mm
Screw
3x10mm
Screw
38120
Alum.
Fuel TankPost
Fuel Nipple
Fuel Nipple
3x12mm
Screw
3x12mm
Screw
Assembly of the right and left hand side
are the same.