Duratrax Raze Instruction manual

®
™
ASSEMBLY AND OPERATION MANUAL
www.duratrax.com
ITEMS
INCLUDED
The following items are included with your Raze ST.
Chassis
Body
Body Clips (Qty 4)
Decal Sheet
Transmitter
Transmitter Antenna
Receiver Antenna Tube
250cc Fuel Bottle
2° and 3° Toe-Blocks
Ride Height Clips
Glow Starter
Kwik-Pit™ Super Start
Instruction Manual
Exploded View/Parts Listing
Engine Tuning DVD
YOU WILL
NEED
WRENCH
DTXR1170
ALKALINE BATTIERS
AFTER RUN OIL
HCAP3000
ULTIMATE HEX DRIVER SET
DTXR0292
SPARE GLOW PLUGS
DTXG3005
AIR FILTER OIL
DTXC2465
PHILLIPS HEAD SCREWDRIVER
DTXR0124
PLIERS
DTXR0300
ENGINE TUNING SCREWDRIVER
DTXR0185
2
20% O’DONNELL FUEL
ODOP3320
THINGS TO
KNOW
SAFETY PRECAUTIONS
When the safety precautions are followed,
the Raze ST will provide years of enjoyment.
Use care and good sense at all times when
operating this radio controlled truck. Failure
to use this vehicle in a safe, sensible manner
can result in injury or damage to property.
You and you alone must insure that the
instructions are carefully followed and all
safety precautions are obeyed.
• Do not operate the Raze ST near people.
Spectators should be behind the driver or
at a safe distance away from the vehicle.
• Water can cause the electronics to short
out and can cause permanent damage.
• Always turn on the transmitter before
turning on the receiver.
• Fully extend the transmitter antenna before
operating your vehicle.
• Before turning on your radio system, check
to make sure that no one else is running
on the same frequency.
• The engine and exhaust produce quite a
bit of noise. Do not run this vehicle when
or where it can disturb others.
• The engine and exhaust can become very
hot. Avoid touching any of these parts during
use and until they have cooled down.
• Model engine fuel is poisonous. Make sure
you read and follow all of the precautions
on the fuel container. Keep fuel out of the
reach of children.
• Model engine fuel is flammable and when
ignited has a flame that is difficult to see.
Avoid sparks, flames, smoking, or any
other ignition source when fuel is near.
• The engine emits harmful fumes just like real
vehicles. Do not operate this model indoors.
• Avoid running the truck in cold weather. The
plastic and metal parts can become brittle
at low temperatures. In addition, grease
and oil become thick, causing premature
wear and poor performance.
SPECIFICATION AND
DESCRIPTION CHANGES
STRESS-TECH™ PARTS
GUARANTEE
All pictures, descriptions and specifications
found in this instruction manual are
subject to change without notice. DuraTrax
maintains no responsibility for inadvertent
errors in this manual. Visit www.duratrax.
com for the latest updates and information
for your model.
We have engineered the Raze ST to take
the rough and tumble abuse that makes
R/C buggies fun. We are so confident of
the quality and durability of the Stress-Tech
plastic parts that we will replace any StressTech plastic part you break during the first
12 months you own the truck. Just send in
the part to us and we will send you a FREE
replacement. Please see the Raze ST parts
list for the items covered under the StressTech guarantee.
WARRANTY
• DuraTrax® guarantees this kit to be
free from defects in both material and
workmanship at the date of purchase.
DuraTrax will warranty this kit for 90
days after the purchase date. DuraTrax
will repair or replace, at no charge, the
incorrectly made part.
• Make sure you save the receipt or invoice
you were given when you bought your
model! It is your proof of purchase and
we must see it before we can honor the
warranty. Further, DuraTrax reserves the
right to change or modify this warranty
without notice.
• In that DuraTrax has no control over the
final user assembly or material used for
final user assembly, no liability shall be
assumed nor accepted for any damage
resulting from the use by the user of the
final user-assembled product. By the act
of using the user-assembled product, the
user accepts all resulting liability.
To return your Raze ST for repairs covered
under warranty you should send your truck to:
Hobby Services
3002 N. Apollo Drive Suite 1
Champaign, Illinois 61822
Attn: Service Department
Phone: (217) 398-0007 9:00 am-5:00 pm
Central Time M-F
E-mail: hobbyservices@hobbico.com
www.hobbyservices.com
To receive your free replacement part
please send the following to the Hobby
Services address listed under the warranty
on the left.
❏ 1. The broken part must be included.
❏ 2. The part number and description of the
broken part.
❏ 3. Copy of your dated invoice or
purchase receipt.
❏ 4. Your name, phone number and
shipping address.
REPAIR SERVICE
Repair service is available anytime.
• After the 90 day warranty, you can still have
your Raze ST repaired for a small charge
by the experts at DuraTrax’s authorized
repair facility, Hobby Services.
• To speed up the repair process, please
follow the instructions listed below.
❏ 1. Under most circumstances return the
ENTIRE vehicle. The exception would
be sending in a Stress-Tech part. See
the instruction under the Stress-Tech
Guarantee.
❏ 2. Make sure the transmitter is turned off,
all of the batteries are removed and
the fuel tank is completely empty.
❏ 3. Send written instructions which include:a
If the buyer is not prepared to accept the
liability associated with the use of this
product, the buyer is advised to return
this kit immediately in new and unused
condition to the place of purchase.
3
list of all items returned, a THOROUGH
explanation of the problem, the service
needed and your phone number during
the day. If you expect the repair to be
covered under warranty, be sure to
include a proof of date of purchase (your
store receipt or purchase invoice).
FINISHING
THE RAZE ST
TRANSMITTER PREPARATION
• Install eight “AA” batteries into transmitter, making sure the
polarity is correct.
• Insert the antenna into the top of the transmitter and tighten.
• Turn the transmitter on and check the battery light.
• If the LED glows constantly, then the batteries are acceptible.
If the LED flashes, the batteries need to be replaced.
RECEIVER BATTERY INSTALLATION
REMOVE
• Remove the receiver battery cover from the
receiver case.
RECEIVER CASE
• Remove the receiver battery holder from the
receiver cover.
RECEIVER BATTERY COVER
• Install (4) “AA” batteries.
RECEIVER
BATTERY
HOLDER
• Reinstall the receiver battery holder to the cover
using the included tie-strap.
• Secure the receiver cover to the receiver case.
TIE STRAP
4
RECEIVER ANTENNA INSTALLATION
• Uncoil and straighten the antenna wire.
GLOW STARTER BATTERY
ANTENNA
CAP
• Route the receiver antenna wire through
the antenna tube.
• Install the tube into the antenna mount.
ANTENNA TUBE
X
DO NOT CUT THE
ANTENNA WIRE!
ANTENNA
WIRE
FUEL
TUBING
ANTENNA MOUNT
• Install the small piece of fuel tubing
(included) onto the base of the antenna
tube/antenna mount to secure the
antenna tube in place.
• Install a “C” battery (not included) into the
glow starter.
• Install the antenna cap onto the top of the
antenna tube to hold the assembly in place.
AIR FILTER MAINTENANCE
AIR FILTER
BASE
FOAM
ELEMENT
AIR FILTER
TOP
• The air filter comes pre-oiled. However, after runs in dusty conditions, clean and re-oil the foam element.
• Remove the air filter top and foam element.
• Clean the foam using soap and water.
• Apply air filter oil (DTXC2465) onto the foam element, squeezing the element until it is completely coated with the oil.
TIP! Placing the element in a plastic bag will help keep your hands clean.
• Remove any excess oil with a paper towel.
• Reinstall, making sure the filter is properly seated on the base.
5
TRANSMITTER
ANTENNA
RADIO SYSTEM CHECK
!
ALWAYS CHECK THE RADIO
OPERATION BEFORE EACH RUN
POWER LED
STEERING
DUAL RATE
SERVO
REVERSING
STEERING
TRIM
1. Fully extend the transmitter antenna.
2. Turn the transmitter on, then turn the
receiver on.
3. The transmitter wheel will move the
front wheels of the car left or right. If
the wheels turn the incorrect direction,
change the servo reversing switch.
ON/OFF
THROTTLE
TRIM
4. When running, adjust the steering trim so that the car
tracks straight.
BRAKE
5. Pull the throttle trigger to make sure the carburetor opens
fully and the throttle linkage functions without binding.
6. Adjust the throttle trim until the carburetor is at the idle
position. Always adjust the idle speed with the idle stop
screw on the car, not the throttle trim.
THROTTLE
7. Push the trigger and roll the car to make sure the brakes
are applied.
!
• USE THE STEERING DUAL RATE KNOB TO INCREASE
OR DECREASE THE TOTAL STEERING AMOUNT!
• Decal the body to your liking. Use the
photos on the box as a reference.
• Install the body onto the chassis
using four body clips.
6
MAKE SURE NOBODY ELSE
IS ON YOUR CHANNEL
ENGINE
RUNNING THE
ENGINE
TUNING GUIDE
HIGH-SPEED NEEDLE
The “high-speed” needle
is sticking up from the
carburetor. This controls
the fuel to air mixture of
the carburetor. The needle
is pre-set for break-in from
the factory at 4-1/2 turns
out from fully closed. Once
the engine is broken-in, the
high-speed needle would
typically run from 4 to 4-1/4
turns out from closed, depending on the weather, humidity and
altitude above sea level. To richen the mixture turn the needle
counterclockwise. To lean it, turn the needle clockwise.
Before running the engine, read the manual and watch the
assembly and engine tuning video that came with this kit.
STARTING THE ENGINE
IMPORTANT! Your radio system must ALWAYS be turned
on and the transmitter antenna fully extended when running
the engine!
1. Fill the fuel tank.
2. Charge the 6-cell battery (not included) for the Kwik-Pit
Super Start. Install the battery into the unit and connect it
to the starter. Press the button on the starter to check that
it is functioning properly.
3. Attach the glow starter to the glow plug.
4. With the throttle at idle, start the engine using the Kwik-Pit
Super Start.
LOW-SPEED NEEDLE
The “low-speed” needle is
located on the side of the
carburetor. It controls the
fuel mixture at low throttle
settings/idle and is preset
from the factory at 121/2 turns from fully closed
while holding the carburetor
open. Low speed needle
adjustment should only be
done after break-in. There
is a simple way of adjusting the low-speed needle correctly
called the “pinch test.” With the engine at idle, pinch the fuel
line and listen to how the engine speeds up or slows down.
If the engine increases its speed for about 2 or 3 seconds
and then loses speed, the needle is set correctly. If the engine
loses RPM quickly, it is set too lean and the low-speed needle
needs to be opened (counterclockwise) to richen the mixture.
Pinch again to check the mixture. If the engine takes longer
than 4 seconds to slow down, lean (clockwise) the low-speed
needle and then pinch again to check the mixture.
IDLE STOP SCREW
The “idle stop” screw is
located on the backside of
the carburetor.This increases
or decreases the idle speed
without changing the fuel
mixture. The barrel should
be approximately 1mm from
fully closed.
Sometimes it is helpful to start the engine at around half
throttle. When the engine starts, immediately return the
throttle to idle.
IMPORTANT! FIXING A FLOODED ENGINE
If the engine is difficult to turn over with the Super Start,
especially if it is brand new, loosen the glow plug a half turn
before starting the engine. This allows some compression to
escape, but the engine will still start. Make sure you tighten
the glow plug after the engine starts. If the Super Start is still
having problems turning the engine over, it is flooded – there
is too much fuel inside the engine. Remove the glow plug,
then turn the truck upside down and run the Super Start for
5 or 6 seconds. This will clear the engine of fuel, and you will
notice the engine turns over easier. Replace the glow plug
and repeat the starting procedure.
STOPPING THE ENGINE
Pinch the fuel tubing leading to the carburetor until the engine
stops running. Never place your finger over the exhaust to
stop the engine. This could result in serious burns on your
finger. It also causes fuel to back up in the engine, making
it harder to start the next time you run your Raze ST.
BARREL 1mm
FROM FULLY
CLOSED
IDLE STOP SCREW
IMPORTANT! To insure long life and good performance from
your engine, you MUST break-in the engine. The break-in
period is critical for long life of the internal parts of the engine.
This should be done over the first 5 tanks of fuel.
7
Important! At this point, the engine will likely be running at a
faster idle speed than needed (This is typical after break-in).
Adjust the idle stop screw to lower the idle speed so that the
wheels do not, or just barely, rotate when you lift the truck off
the ground.
BREAK IN
PROCEDURE
SOME THINGS TO REMEMBER DURING BREAK-IN
1. Run with the body off. This will keep the engine cooler.
2. Keep the air cleaner on at ALL times
3. Run on a smooth, hard surface. An empty parking lot
is perfect.
4. Use the same fuel that you will use for normal running.
5. Resist the urge to accelerate and decelerate quickly.
6. Break-in puts stress on the glow plug and can burn it out.
Make sure you have an extra plug or two on hand.
7. Do NOT overheat the engine (see page 9). You can check the
head temperature by using one of the temperature gauges that
are readily available (DuraTrax Flashpoint™, DTXP3100).
TUNING TIPS
After break-in, run the truck where you plan to do most of
your driving (grass, street, track, etc). Tune the high speed
needle so the engine makes good power without overheating.
Using a temperature gauge, tune the engine so that it will
consistently stay under 230° F. Keep in mind, RC engines
usually take a minute or two to warm up. It is common not to
reach full power right away. Never tune a cold engine!
If needed, tune the low speed needle so that the truck idles
and accelerates smoothly and consistently. Note: You may
sometimes experience “run-on” when running the truck.
“Run-on” is when the engine does not drop back down to idle
after the trigger on the transmitter is released. To correct this,
richen the low-speed needle using 1/8 turn increments until
the engine idles normally when the trigger is released.
TANK 1
Your first tank of fuel should be running the Raze ST at a
very rich needle valve setting. This allows the fuel to carry as
much oil as possible into the engine to properly lubricate the
internal parts during the break-in.
ENGINE CARE
Never store your Raze ST with fuel in the tank. We recommend
that after the final run of the day, you empty the fuel tank and
then run the engine at idle until all the fuel is out of the fuel lines
and engine. Remove the air filter and glow plug. Then place
two drops of Hobbico® After Run Engine Oil (HCAP3000) in the
carburetor and two into the cylinder to help prevent corrosion.
Run the Super Start a few times to circulate the oil.
1. Open the high speed needle valve 4-1/2 turns from fully
closed (counterclockwise). This is factory set already,
but check it to make sure. When closing the high-speed
needle, close until you feel some resistance. DO NOT
overtighten or you will damage the engine.
2. Fill the fuel tank and start the engine.
3. Run the truck on a smooth surface with the body off.
4. Run back and forth at medium speeds, slowly accelerating
and decelerating the truck.
5. Run the truck until the tank is almost out of fuel. Do not
allow the tank to run out of fuel during break-in. This leans
out the engine and can cause overheating.
6. Stop the engine and allow it to cool. This normally takes
around 10-15 minutes.
10 WAYS TO ENSURE LONG LIFE FROM YOUR ENGINE
1. Keep your engine and air filter clean. Dirt will act as
insulation on an engine. It will not be able to shed heat as
easily. Clean and re-oil the element often.
2. Do not over-lean your engine.
3. Do not run your engine with little or no load. Don’t throttle
up the engine to full throttle when the wheels are not in
contact with the ground.
4. Do not overheat the engine (see page 9).
5. Do not use a fuel with a low oil content. Make sure you use
a model car fuel from a reputable manufacturer, such as
O’Donnell Fuels.
6. Avoid using old fuels in the engine.
7. Do not scratch the piston or cylinder sleeve. Avoid jamming
something into the exhaust port when removing or reinstalling the clutch or flywheel. Use a special tool called
the Ultimate Flywheel Wrench (DTXR1105) to keep the
crankshaft from moving.
8. Do not use silicone sealer on the engine joints. Silicone
sealer contains acetic acid, which is corrosive if it gets
inside your engine.
9. Do not allow any water to get inside the engine. This sounds
easy, but temperature changes can cause condensation
inside the engine. This is a good reason to use an after-run
oil. Store your engine inside the house, not in a garage or
shed where there will be temperature extremes.
NOTE: If your engine does not stay running consistently, increase
the idle speed by turning the idle stop screw clockwise.
TANK 2
Lean the high-speed needle 1/12 turn from “tank 1” setting.
Run the truck for the complete tank and then let cool.
TANK 3
Lean the high-speed needle another 1/12
turn from “tank 2” setting. Run the truck
for the complete tank and then let cool.
TANK 4
Lean the high-speed needle another 1/12 turn from “tank
3” setting. Run the truck for the complete tank and then let
cool. You should notice the engine running much better at
this point.
TANK 5
Lean the high-speed needle another 1/12 turn from “tank 4”
setting. Run the truck for the complete tank and then let cool.
The engine is now ready to be performanced tuned.
8
FUEL SYSTEM
The fuel line is susceptible to pinhole leaks. You usually
cannot see the hole in the fuel line, but if you see air bubbles
in the line going to the carburetor, replace the fuel line.
Another symptom of a leak in the fuel line is a surging engine.
A properly tuned engine will surge when the air bubbles hit
the carburetor. It is basically leaning out the mixture.
GENERAL
INFORMATION
GLOW PLUG
The glow plug is an item that will wear
out and need replacement from time
to time. It is a good idea to remove
the glow plug before your first run,
connect the plug to the glow starter and see how well it
glows. You should see a bright orange glow from the filament.
If a coil or two will not glow or the plug will not glow at all,
replace the plug. If the engine quits when you remove the
glow starter, the plug might need to be changed, although
this may be because you are running too rich and need to
lean your high-speed needle. Look at the glow plug when
you are running the engine. If you see some bubbles coming
from around the plug, replace the glow plug. The only real
way to test a glow plug is to replace it. Make sure you have a
spare plug or two on hand every time that you run the Raze
ST. We recommend the DuraTrax Gold Plug (DTXG3005).
Dirt can get caught in the needle seat and cause an
inconsistent running engine. If you suspect that some dirt has
lodged itself in the carburetor, remove the needles and clean
the carburetor with denatured alcohol or fuel. It can help to
use compressed air to blow out the fuel passages as well.
OVERHEATING
One of the worst things you can do to your engine is
overheat it. The oils that lubricate the engine are carried
in the fuel. If your engine is set too lean, there will not be
enough oil in the engine to lubricate the internal parts. This
will cause premature wear in the engine and cause damage.
The easiest way of checking the temperature of the cylinder
head is by using one of the available temperature gauges
(we recommend the DuraTrax Flashpoint Temperature
Gauge, DTXP3100). This will give you a direct reading of
the cylinder head temperature. Hold the temperature gauge
directly on the cylinder head so the gauge is pointed directly
at the glow plug. Do not let the head temperature exceed
230° Fahrenheit.
AIR FILTER
Dirt can get into your carburetor and engine through the air
filter. Ensure that your air filter has a good seal to the top
of the carburetor. Periodically wash the air filter foam element
(using dish soap and water) and re-oil the filter with filter oil
(DTXC2465). Any air filter that has a torn element or a bad
seal should be replaced immediately.
FUEL
Use fuels that are specially formulated for car and truck
engines like O’Donnell 20% Race Fuel (ODOP3320).
Fuel can go bad. The main ingredient in model
fuel is methanol, which is basically alcohol.
Alcohol will absorb water out of the air, so
keep your fuel jug capped at all times. Store
your fuel out of the sunlight and in a cool
place, off the ground away from temperature
extremes. Bad fuel is one of the most difficult
problems to diagnose in engines. If you have
tried everything you can think of to remedy
an engine that is not running correctly, try
using some fresh fuel.
9
MAINTENANCE
TUNING
TIPS
GUIDE
When tuning the Raze ST make sure that you have equal
lengths from one side to the other on the shocks, camber
rods and steering rods. Also, make sure to have the shock
pre-load adjusters at the same setting from left to right. They
do not have to be the same front to rear.
BEFORE EACH RUN
1. IMPORTANT: Check to make sure
that all screws are tight. Always use
threadlock (DTXR2010) on screws
going into metal.
2. Before running always check the
condition of your radio system batteries and replace/
recharge if necessary.
CAMBER
3. Check to make sure that all of the moving parts of the
Raze ST move freely and do not bind.
4. Check the fuel tank and fuel lines for leaks.
5. Before starting the engine, turn on the radio and make
sure the servos move easily and in the proper direction.
6. Inspect the air filter for a torn or damaged element. Also look
for dirt in the air cleaner element and wash it if necessary.
Camber refers to the angle at which the tire and wheel
ride in relation to the ground when viewed from the front or
rear. Negative camber is when the wheels lean inward and
positive camber is when the wheels lean outward. Usually
adding a small amount of negative camber (0° to -2°) will
increase traction. However, adding too much camber will
decrease traction. The objective is to keep as much of the
tire as possible in contact with the running surface. Never put
in positive camber. Make sure that both sides are equal.
7. Check for broken or damaged parts. Replace any broken
or damaged parts before running the Raze ST. Running of
the Raze ST with broken or damaged parts could result in
damage to other parts.
8. Check to make sure that all wires are properly connected.
AFTER EACH RUN
1. Clean any large globs of dirt or debris from the chassis
and moving parts.
2. Drain the fuel tank of any leftover fuel. DO NOT return the
fuel to your fuel jug.
Use the DuraTrax Pit Tech™
Camber Gauge (DTXR1145) to
accurately set up your Raze ST.
3. Check for any broken or damaged parts. This way parts
may be replaced before the next run.
4. Put 2 drops of after-run oil in the carburetor and 2 drops
in the cylinder (removing the glow plug to access the
cylinder) and turn the flywheel several times to work the
oil into the engine. This will protect the engine from rusting,
especially when stored for a long period of time.
ROLL CENTER ADJUSTMENT
AFTER EVERY 10 RUNS
1. Check to make sure that the bearings are free of dirt and
debris, and roll smoothly.
2. Check the shocks for oil leakage. Inspect the shaft and
O-rings for damage and replace if necessary. (A shock
shaft with scratches you can feel with a fingernail should
be replaced.)
3. Make sure the servo saver is free moving and does not bind.
This will help prevent stripping of the servo during running.
4. Check for proper gear mesh between the spur and
clutch bell.
Install the inner upper arm in the lower position for high-traction
surfaces and in the upper position for low-traction surfaces.
10
TOE-IN AND TOE-OUT
REAR SHOCK ADJUSTMENT (IN AND OUT)
Toe-in is when the fronts of the tires point towards each
other. Toe-in increases stability during acceleration and
high speed. However, toe-in also decreases steering when
entering a corner. Toe-out will increase steering into corners,
but will decrease the overall stability during acceleration. The
front typically is set-up with 0° to –2° of toe-in. Toe-out is
when the fronts of the tires point away from each other.
Moving the tops of the shocks in will result in more traction
in the corners and will be smoother over the bumps. Moving
the tops of the shocks out will give the truck more steering
and handle large jumps better.
Rear toe-in affects the traction of both the front and rear of
the truck. Rear toe-in increases the amount of traction in
the rear, but decreases steering. Decreasing rear toe-in will
increase steering, but will give less rear traction. The Raze
ST comes with 2° and 3° rear toe-in blocks.
SHOCK OILS AND SHOCK SPRINGS
Many different combinations can be used between the shock
oils and shock springs. Some basic guidelines when setting
up the Raze ST are that if the rear end is stiff it will give the
truck more steering and have less rear traction. Stiffening
the front will result in less steering and more rear traction.
Changing the shock pre-load adjusters results in ride-height
change only. It does not change the spring tension.
RIDE HEIGHT
The Raze ST shocks use preload clips to adjust the truck’s ride
height. By adding the included preload clips to the shock, the
truck’s ride height will increase. Removing the preload clips will
lower the ride height. Typically, a good place to start is with the
ride height set so the dogbones are parallel to the surface.
Thinner shock oil makes the shocks react faster which works
well on rough tracks, but makes the truck less stable and
may cause the truck to bottom out over large jumps. Thicker
shock oil makes the truck smoother over large jumps and in
straights, but less reactive over rough sections.
FRONT SHOCK ADJUSTMENT (IN AND OUT)
DIFFERENTIAL OIL/GREASE
The Raze ST comes with sealed differentials filled with
medium grease. You can tune the truck by changing the oil/
grease either heavier or lighter.
• For loose track conditions, use a lighter oil/grease. For high
traction conditions, use a thicker oil/grease.
• For more pull in the corners, use a thicker oil in the front
than in the rear.
• To reduce steering and increase overall forward traction,
use a thicker oil in the rear than in the front.
Moving the tops of the shocks out will increase steering
resulting in quicker reaction. Moving the tops of the shocks
in will result in slower steering reaction, but will be smoother
over bumps. Mounting the bottoms of the shocks in the inside
holes will give more slow speed steering but will take away
some high speed steering.
11
MAINTENANCE
GUIDE
The following section is provided to help you with maintenance
and repairs to your Raze ST. Pay extra attention to the notes and
tips for proper assembly.
Use threadlock on all
metal-to-metal screws.
Do not overtighten. The O-ring
should not flatten out.
12
Use threadlock on all
metal-to-metal screws.
Make sure all bearings
are fully seated.
Fill the diff case with quality oil or grease.
NOTE: Fill the case until the bevel gear
shafts are covered. Filling the case
higher will cause oil to spill out when the
other side of the diff is installed.
There are several different viscosities
of oil available, which allow you to tune
your truck’s handling to particular track
conditions. Grease may be substituted if
you don’t have access to diff oil.
13
Use threadlock on all
metal-to-metal screws.
Thread the ball ends
onto the turnbuckles
equally. Adjust after
assembly is complete.
Make sure all bearings
are fully seated.
Fill the diff case with quality oil or grease.
NOTE: Fill the case until the bevel gear
shafts are covered. Filling the case
higher will cause oil to spill out when the
other side of the diff is installed.
There are several different viscosities
of oil available, which allow you to tune
your truck’s handling to particular track
conditions. Grease may be substituted if
you don’t have access to diff oil.
14
Thread the ball ends
onto the turnbuckles
equally. Adjust after
assembly is complete.
Use threadlock on all
metal-to-metal screws.
Make sure all bearings
are fully seated.
Make sure all bearings
are fully seated.
Use threadlock on all
metal-to-metal screws.
15
Make sure all bearings
are fully seated.
Thread the turnbuckle into
the rod ends equally. Adjust
after assembly is complete.
16
Completely fill the shock body with shock
oil. Slowly work the piston up and down
to remove air bubbles. Slowly tighten the
shock cap onto the shock body to allow
the remaining air to escape.
Apply a small amount of
shock oil to the O-ring
assembly before installing
them into the shock body.
Apply a generous amount
of shock oil to the shock
shaft before installing into
the O-ring assembly.
17
Make sure the hex portions of the
braces and wing mount are
properly aligned before tightening.
Use CA glue to secure
the tire to the wheel.
18
Use threadlock on all
metal-to-metal screws.
Use threadlock on all
metal-to-metal screws.
19
ENGINE
TROUBLESHOOTING
The Engine Starts
YES
It should be
ready to go.
Clear the
engine
of fuel.
YES
Is the high
speed needle
setting 3-1/2 to
3-3/4 turns out
from closed
(if the engine
is broken-in)?
Does it run
continuously?
NO
YES Is fuel getting YES
to the engine?
Does the engine
quit when the
glow plug clip
is removed?
YES
Replace the
glow plug.
NO
NO
NO
Make sure the
fuel line is
connected and
check for leaks.
Reset the high
speed needle.
Check that the
pressure line
is connected to
the muffler. The
fuel may be bad.
Try starting the
engine again.
The Engine Does Not Start
NO
Does the engine
turn over easily?
YES
Replace the fuel
line and flush out
the fuel tank.
NO Is foreign matter
clogging the fuel
tank or fuel line?
NO
Does the engine
turn over easily
with the glow
plug removed?
NO
Check that nothing
is caught in the
engine. Check that
the pull starter
operates smoothly.
YES
The engine may
be flooded. Clear
the engine of fuel.
Is fuel in the
fuel line?
YES
YES
Is the glow
plug red hot?
Remove the
obstruction
from the fuel
tank or fuel line.
NO
YES
Check the high speed
needle setting and
prime the engine.
Is the battery for
the glow starter
charged?
NO
Charge or
replace the
batteries.
YES
Replace the
glow plug.
Try starting the
engine again.
Entire Contents Copyright © 2007
DTXZ1114 for DTXD77**