Primal RC Raminator User manual

1/5 SCALE RAMINATOR MONSTER TRUCK
INSTRUCTION MANUAL
WWW.PRIMALRC.COM

Table of Contents
01
01
11-12
Assembly
13
14-18
19-21
21-25
25-27
28-32
33
34-36
36
37
38
02
02
39-41
41-43
43-44
44-49
Differential
Front Axle
Rear Axle
Transmission
Engine
Chassis
Fuel Tank
Receiver Box
Main Sway Bar
Linkage
Axle
Shock
Sway Bar Link
Tire
Roll Cage
Body
1/5th RAMINATOR MONSTER TRUCK
50-51
Parts List
03
04
04
05
06
07
Safety Guidelines
Terms of Use
Safety is Your Responsibility
Gas Engine Use Warning
Assembly Instructions
Wiring Diagram
Remote Engine Killswitch & Fail-Safe
Radio Details
Before You Drive
Running Your Truck
After you Drive
Choke Removal Instructions
07
08
Steering Servo Saver Adjustments 08
Troubleshooting Guide
09
Transmission Gears Adjustment 10
Brake Adjustments
Pg.
This product is sold by Primal RC with the understanding that the buyer accepts full responsibility for all actions associated with its use. Serious injury,
property damage, or death can result from driving the monster truck or using any of the included accessories in an unsafe or irresponsible way. The
buyer assumes all liability with this product including any actions that occur due to a failure to follow its safety and operating instructions resulting in
unsafe or improper use or any action that violates the pertinent laws and regulations. Primal RC, and all the Primal RC dealers, will not be held
accountable under any circumstances with the use of this product resulting in property damage, personal injury, or death. This includes any willful or
unintentional damages that may arise out of the assembly or use of the product or its accessories. The user accepts all liability by the act of using and
operating the truck and releases Primal RC, and all Primal RC dealers of any and all liability associated with its use. Primal RC requests that you do not
use this product if you as a user do not accept liability of ownership. If you don’t accept liability, please do not open any of the enclosed accessories, do
not attempt to start it, and contact us to make arrangements to return the product. Used vehicles cannot be accepted for returns or exchanges under
any circumstances. The material included in this manual can be changed without notice. Primal RC reserves the right to make improvements to the
products with no commitment to integrate those improvements into products sold previously. The manual is subject to change at the discretion of Primal
RC. For the latest version of the manual please visit www.PrimalRC.com.
If you have any questions regarding this Terms of Use, stop and do not go any further. Do not run your vehicle and contact Primal RC at
[email protected].
Terms of Use
Thank you for purchasing the Primal RC 1/5 Scale Monster Truck.
This manual contains the instructions you need to operate and
maintain your truck. It is very important that you take the time to read
and understand the instructions and radio manual. Make sure you read
and follow the precautions and warnings in the Safety Guidelines
section. These guidelines will educate you on how to run your truck
safely and maximize its longevity and performance.
This truck requires advanced R/C user experience and expertise. You
must be 18 years of age or older to operate this vehicle. Even if you
are an experienced R/C driver, it is important to read and follow the
safety guidelines in this manual.
If you have any questions regarding this vehicle or this manual: Stop.
Do not use this vehicle and contact us at [email protected].
Thank you again for your purchase and we look forward to exceeding
your expectations.
Safety Guidelines
WARNING – RISK OF FIRE, INJURY OR DEATH
The truck is not a toy. The truck requires an advanced set of skills and is not
intended for use by children or minors under the age of 18. The truck is
intended to be purchased and operated by competent, adult R/C users
possessing qualified skills and experienced driving ability. The user of this
vehicle should be practical, mature, intelligent and display good common
sense.
Caution must be taken to ensure the safety of yourself and others around you.
This truck is very large and is capable of high speed and quick acceleration.
Collisions of a critical nature (injury, death, severe property damage) can
result if the truck is operated in a careless or unsafe manner. Always take
great care to make sure all systems are working properly before operating.
The user must be aware of their limits and abilities. Make certain to have
adequate space where the truck can be run safely.
The truck requires the use of 2-stroke gasoline for its engine. Gas engines
and 2-stroke gasoline have a very high risk of fire and injury if they are
handled improperly. The truck comes equipped with a NI-MH receiver battery.
Please read and understand the proper procedures for charging the battery.
The user must read and understand all the included instructions regarding the
proper operation, maintenance and safety precautions in using a 2-cycle gas
engine and charging batteries.
Instruction Videos Available at
PrimalRC.com/Video/TruckInstructions
1
52

1/5th RAMINATOR MONSTER TRUCK
Safety is Your Responsibility
•Your radio system may be subject to radio interference from many sources that are out of your control. Please be aware that
radio interference may cause a temporary loss of control. Allow adequate space in all directions when running your truck to
prevent collisions if radio interference should occur.
Test the range of your transmitter in the area you are driving. Make sure not to drive too far and go out of range.
After testing the range, start by driving slowly in the area to make sure there is no interference that can cause temporary losses
of control.
Always test the failsafe system every time before use to ensure it’s working properly (instructions are in the radio manual).
Use new or freshly charged batteries in order to boost signal output power and range.
The motor and exhaust become hot during use. Be careful not to touch them while hot to avoid getting burned.
Drive in the proper area. This product is not designed to be used in heavy traffic areas where its operation would cause
pedestrian and vehicle interruptions. This is recommended to prevent collisions causing property damage, injury, or death.
Try to always bring a friend while driving. Another set of eyes is helpful to identify potential hazards such as an animal or person
crossing in the driving path.
Always have a clear view of the model when driving. Do not drive at night or when your vision may be blocked in any way.
Don’t drive the model too close to you, other persons, or property where collisions may occur. Allow a comfortable amount of
space to maneuver the truck.
Be sure to check over the truck after each driving session. Check for damage or any loose parts and correct any issues right
away before using again. Make sure to check and tighten the wheel nuts before each session.
Do not pick up the truck by its wheels or tires. Keep your hands free and clear of any moving parts when the electronics are
turned on. Gravel, dirt, sticks, and other debris can be kicked up from the rear wheels during aggressive starts. Avoid standing
directly behind the truck and make sure other watchers are at a safe distance to avoid being hit. Eye protection is always
recommended.
Avoid making changes not shown or suggested in the instruction manual. You can cause damage to the model and injury to
yourself or others if the product is altered in a way not intended.
Remember: SAFETY FIRST. Create a safe environment to run the truck and use good common sense. This will ensure
maximal enjoyment while using the truck.
Gas Engine Use Warning
•A mixture of gasoline and 2-stroke oil is used for fuel. Please use caution when handling fuel.
Keep fuel away from open flames, heating sources, direct sunlight, smoke, batteries or any ignition source. Store fuel in a well-ventilated area.
Store fuel and truck in a location children can’t access.
Keep fuel and truck away from children.
Gasoline is flammable, toxic, and can produce noxious vapors. The exhaust emitted from the truck can also produce noxious vapors. These
vapors can irritate eyes, respiration, and be dangerous to your health. Always operate the truck in a well-ventilated area.
The 2-cycle engine that comes on this truck only uses a mix of gasoline and 2-stroke oil. The oil/gas mix is how the engine is lubricated. Never
run straight gas through the engine as catastrophic damage may result. Never use glow fuels intended for R/C car use.
•
•
•
•
•
WARNING – FIRE RISK: EMPTY THE FUEL TANK BEFORE STORING THE TRUCK.
•
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2

1/5th RAMINATOR MONSTER TRUCK
Assembly Instructions
This truck is shipped in two boxes. One box contains the main chassis with body installed, 3 sticker sheets, two wheels,
transmitter, battery, charger and accessories. The second box contains front and rear axle, brake system, two wheels and four
shocks.
Before assembling and starting your truck, read and understand all manuals and familiarize yourself with the truck completely.
If you decide this truck is not the right choice for your or you do not want to assume responsibility for your safety, then do not
attempt to assemble or start it. Do not run the vehicle at all and please contact us to make arrangements to return the vehicle.
If your vehicle arrives with damage from transit please do not run the vehicle, and contract us instead. Used vehicles cannot be
accepted for returns or exchanges under any circumstances. If you have any questions about your truck, please email us at
[email protected]. Maintenance and replacement parts may be purchased directly from www.PrimalRC.com.
If you are prepared to assemble the truck, visit our website and view the installation videos.
See instruction video on www.PrimalRC.com/Video/TruckInstructions
Then follow along the instructions provided below. If you do not feel comfortable completing the assembly below. STOP. Do not
use the truck. Contact us and we can discuss the concerns with you on the phone or by email.
This truck is intended for users that have extensive experience with gas R/C vehicles and 2-Stroke engines.
1. Position main frame and axles on a surface with enough clearance for assembly.
2. Install the brake rotor on the driveshaft and install the drive shaft pin through the drive shaft and pinion gear shaft.
3. Slide the drive shaft from the axle into the drive shaft coming out of the transmission. Make sure the brake rotor is installed on
the axle.
4. Attach the axle to the four links already assembled on the main chassis.
5. Install shocks on the main chassis and axles. Note: hardware is already installed on axles and chassis.
6. Connect the two servo wires to the wires coming out of the receiver box. There is no preference for left or right servos –either
servo can go into either plug.
7. Attach top sway bar links to already installed sway bar on the chassis. Then attach lower sway bar links to the axle.
8. Install the brake calipers with one pad on each side of rotor (see diagram assembly instructions #66).
Note: The two bolts that hold the brake pads to the caliper should be installed using RED lock tight at the right position.
Without lock tight, these screws will come undone very easily.
10. Install the brake cables (see diagram assembly instructions #66). Make sure to route cables as smoothly as possible for
ease of operation. Cables should not be bent sharply. Zip-tie cable in strategic location to avoid snagging during operation.
Ensure suspension can travel smoothly without pulling on brake cable. See instruction video on www.primalrc.com/video/
TruckInstructions.
11. Initial brake cable adjustment: First, ensure your throttle servo is working properly and giving full throttle to carburetor. Then
in neutral (i.e. your throttle is not being applied) slide the brake cables into the brake servo cable splitter. Adjust the stop collars
so that the breaks are about to apply as soon as you trigger the transmitter to brake position. This adjustment is something that
you will fine tune to your needs. Front and rear bias can also be adjusted at the same time.
See instruction video on www.PrimalRC.com/Video/TruckInstructions.
12. Install wheels using supplied lug wrench. The hex nuts have a serrated side, ensure it is facing the rim.
13. Remove protective body film, then install stickers on the body.
See instruction video on www.PrimalRC.com/Video/TruckInstructions.
14. Charge the battery with included charger.
15. Install batteries into transmitter.
16. Follow the instructions in the “Before You Drive”, “Running Your Truck” and “After You Drive” sections of this manual.
Note: Looking at the pictures of the truck on our website can guide you to ensure that you are assembling the truck correctly. Also
viewing the instruction videos will give you tips on how to install everything correctly and easily.
3

Wiring Diagram
_
+
S
_
+
S
_
+
S
_
+
S
_
+
S
_
+
S
_
+
S
_
+
S
S
+
-
CH1
CH1
CH2
CH4
CH4
Switch
T plug
To battery To receiver CH1
To Y-link
To receiver CH4
To receiver BATT.
When using extra battery for the receiver,
pull out the positive pin (Red).
VCC
Steering servo 1
Steering servo 2
Throttle servo
Brake servo
Reverse servo
Receiver
_
+
S
_
+
S
_
+
S
CH2 Y-link
To Engine Switch
CH3 S
Reverse switch
Bind/VCC
REMOTE ENGINE KILL-SWITCH & FAIL SAFE
Features
Setup
1. If receiver loses signal, the RED LED will light and engine will cut off. The fail safe will also engage the brakes to stop the vehicle.
2. The engine can manually be cut off by CH3(AUX) from the transmitter. The RED LED will flash.
3. If low battery voltage is detected the RED LED will light and engine will cut off.
LED DESCRIPTION Engine status
System Ready Can start
Cut-off
Cut-off
Low Battery Voltage or no signal
CH3(AUX) is on
DON'T start the engine yet!
Hold the throttle trigger fully to the brake position and set the brake end point adjustment (EPA) to 100%. The RED LED should light signaling
an engine cut-off. If the LED doesn't light, toggle the REVERSE SWITCH and try again. As you setup the receiver's Fail-Saf function, push the
throttle trigger to full brake. Once the Fail-Safe function is setup, return the EPA to its original setting. To verify the Fail-Safe function has been
correctly set, turn off the transmitter. The RED LED should turn on.
If everything is setup and connected correctly the GREEN LED will light up and you're ready start the engine.
The engine can be manually cut-off at any time by pressing the CH3(AUX) button. The RED LED will blink red when successful.
LED Status Display
Green
Red
Red Blinking
1/5th RAMINATOR MONSTER TRUCK
4

Radio Details
Bind/VCC
LED
Antenna CH 1-6
Receiver
Battery
Compartment
Engine Kill Switch
(Channel 3)
Throttle/Brake
(Channel 2)
LCD
Channel 5
LED Indicator
BIND
NaviKey
(Rotate to “Select”, press to
“Confirm”)
BACK/Exit
Power Switch
Reverse Activation
(Channel 4)
Steering
D/R
Steering Trim
(Channel 1)
Throttle Trim
(Channel 2)
Steering Wheel
(Channel 1)
Channel 6
Antenna
Transmitter
5. Check to make sure everything functions as expected. If not repeat the steps above.
4. Once binding is complete the transmitter will exit bind mode. Remove the power and
bind cable from the receiver then apply power to the B/VCC port.
3. Press and hold the transmitter’s bind key and turn on the transmitter at the same time.
2. Connect power to any other port.
1. Connect the bind cable to the receiver’s B/VCC port.
The transmitter and receiver have been pre-bound.
If you are using another transmitter or receiver, follow the steps below to bind the
transmitter and receiver:
Binding setup
1/5th RAMINATOR MONSTER TRUCK
5

1/5th RAMINATOR MONSTER TRUCK
Before You Drive
It is extremely important that you read, understand, and follow all instructions in the manuals included with this truck
in order to prevent serious damage to your truck, yourself, and your property. If the user fails to follow these
instructions, it will be considered negligence.
Before assembling and starting your truck, read and understand all manuals and familiarize yourself with the truck
completely. If you decide this truck is not the right choice for your or you do not want to assume responsibility for
your safety, then do not attempt to start it. Do not run the vehicle at all and please contact us to make arrangements
to return your vehicle.
Used vehicles cannot be accepted for returns or exchanges under any circumstances. If you have any questions
about your truck, please email us at [email protected]. Maintenance and replacement parts may be purchased
directly from www.PrimalRC.com.
Follow these steps before each drive session:
1. Mix Gas and 2-Stroke Oil
•Pump gasoline – 87 octane or higher – ethanol-free gas is highly recommended
•2-stroke oil. Amsoil Saber (recommended): Mix 25:1 ratio (gas/oil)
2. Check to make sure you have a fully charged receiver/servo battery in truck.
3. Check to make sure your transmitter batteries are good.
4. Check all servos (Steering, Throttle, Brake, Reverse).
• DON’T start your vehicle’s engine yet!
•Turn your transmitter on.
•Turn the truck’s battery switch on (located in the back of roll cage).
•Hold the trigger on the transmitter into full brake position. Confirm that the brakes prevent the truck from moving
when you try to push it. If it rolls easily adjust brakes as described in the Assembly Instructions section above.
•Test left and right steering servos by lifting the front of the truck and moving the servos via the transmitter.
Ensure the servos are moving smoothly and there is no excessive play or binding. Adjust as necessary.
•Test throttle servo by giving full throttle and ensure carburetor is moving to full throttle position.
5. Check Remote Engine Kill Switch:
• DON’T start your vehicle’s engine yet!
•Make sure the Manual Engine switch is ON (located on frame under front right wheel well).
•The Remote Engine Kill switch system is located on the truck near your receiver box and has an LED light. The
light is GREEN when it is ready to start and run. If the light is RED this means the Remote Kill switch is on and
your engine will not start. Your transmitter’s third channel button operates the Remote Kill switch.
•To test the Remote Kill switch, press the third channel button on the transmitter. The light should turn RED.
Press it again to change it back to GREEN before you run the truck.
6. Check the Radio Fail Safe: The radio system that comes with the truck has a fail safe automatically installed
ensuring that if your transmitter’s signal is not reaching your truck’s receiver the brakes will be applied
automatically. To test:
• DON’T start your vehicle’s engine yet!
•Turn your transmitter on.
•Turn the truck’s battery switch on (located in the back of roll cage).
•Turn your transmitter off.
•Your brake servo should now apply the brake on its own.
•You have now confirmed that the failsafe is working. Should the receiver lose signal from the transmitter, the
brake will automatically be applied.
•Turn your transmitter back on for normal use.
7. Go over truck to make sure there are no loose screws.
8. Check lug nuts by tightening with provided wrench. Ensure the serrated side of hex nut is facing the rim.
6

1/5th RAMINATOR MONSTER TRUCK
Running Your Truck
1. Add 2-Stroke gas and oil mix to gas tank.
2. Turn your transmitter on.
3. Turn the truck’s battery switch on (located in the back of roll cage).
4. Make sure your Manual Engine switch is set to the ON position (located on frame under front right wheel well).
5. Move choke lever to full choke position.
6. Push primer bulb several times, until you see gas going through carburetor and back into gas tank lines.
7. Pull start the engine with a steady, smooth, quick pull until you hear the first pop of the engine trying to start. This is an easy
pull start system. There is no need for aggressive, quick pulls. Do not over-extend the pull-start or your pull starter may
become damaged.
8. Flip the choke lever to off position (down). Make sure it stays in position.
9. Pull start the engine again with short, quick pulls until your engine starts.
Sometimes a little throttle input from the transmitter may be necessary to start the engine.
Be careful to not give too much gas – it may result in the engine flooding.
10. If you are running the truck for the first time, engine break-in is recommended.
The engine break-in process alternates heating and cooling the engine to allow all parts of engine to properly seat
themselves. It also allows 2-stroke oil from the incoming fuel to coat the interior parts of the engine.
Run the engine at varying speeds for periods of 3 to 10 minutes at a time. During this break-in process, never go full
throttle.
Try to stay below half throttle. Always let the engine idle for 30 seconds before turning it off. Allow the engine to cool off for
10 minutes before starting it again. Repeat this process 3 or 4 times (3 or 4 full heat cycles).
11. Reverse Driving Instructions
To drive the truck in reverse, ensure that the truck has come to a complete stop, then switch channel 4 from the
transmitter. Switch to the opposite position – it's a 3-position switch, so be sure to toggle between the furthest positions.
This will cause the servo to active the reverse function in the transmission. Test this by giving it a little gas to confirm that
reverse is engaged. You may need to toggle the switch ON and OFF again to engage if reverse is not working.
To go back to forward driving repeat the process of bringing the truck to a stop and then switching channel 4 to the
opposite position.
Note: Because of the size and weight of the truck, try to avoid steering the truck while it is not moving. This will extend the life
of your steering servos.
Note: This truck is not waterproof. Do not submerge this truck in deep water. Small puddles or shallow water should not be a
problem.
Note: If you are planning on driving this truck in excessive dirt, we recommend that you remove the installed choke.
Follow the Choke Removal Instructions in this manual. It might be more difficult to start the truck without the choke,
however, your engine will last longer because this choke system can let dirt into your engine.
Note: Using a 2S LiPo battery is possible and will provide better steering power, however, the large current will shorten the life
span of the smaller throttle and reverse servos. If you use a LiPo battery, we recommend that you upgrade the throttle and
reverse servos to high-voltage servos.
After You Drive
•Be sure to let the engine idle for 30 seconds to cool before stopping the engine.
•Press the Kill Switch button (channel 3) on your transmitter to shut the engine off.
•Turn battery switch OFF (located in the back of roll cage).
•Turn your transmitter OFF.
VERY IMPORTANT: ALWAYS turn off the truck first, then the receiver, then the transmitter in that order. If your receiver or battery switch is left
ON and your transmitter is OFF the failsafe will cause the servos to overheat and eventually burn out.
•If your truck is wet or dirty, we recommend rinsing the dirt off with a gentle stream of water and then using compressed air to
dry it off.
• Important! Lubricate joint areas and moving parts with WD40 to prevent rust and keep truck working properly for many years
to come.
(example: wheel bearings, suspension links, drive shafts, servo cables)
•Inspect the truck for loose screws, broken and missing parts. We recommend blue lock-tight for screws that are threaded into
aluminum parts that do not have nylon lock nuts.
•If you are storing your truck your truck for a month or more, we recommend draining the gas out of the tank and carburetor.
Love your truck by taking good care of it and it will love you back.
7

1/5th RAMINATOR MONSTER TRUCK
Choke Removal Instructions
•Watch the instruction video at www.PrimalRC.com/Video/TruckInstructions.
•Loosen air filter clamp and slide air filter off.
•Remove the two screws that are holding the choke system onto the carburetor. To prevent the carburetor from
falling off while you remove the screws, hold the carburetor in place.
•Remove the choke plate and lever system and reinstall the velocity stack directly onto the carburetor using the
same two screws that you removed earlier, but install 2 additional lock washers on each bolt to act as spacers
and allow for proper tightening.
•Reinstall the air filter and tighten the clamp.
Steering Servo Saver Adjustments
The steering system has both servos linked to an adjustable centralized servo saver system. This system helps
keep the servos from being damaged when force is put on the front wheels. You can adjust the sensitivity of the
system by loosening or tightening the large hex nut on the servo saver spring. Tightening the spring will allow
more control of the steering, however the servos will be more vulnerable to damage upon impact. Loosening the
spring will reduce steering control, but offer more protection for the servos. Finding the optimal ratio is a matter of
personal preference, so test different settings to find one that you prefer.
8

1/5th RAMINATOR MONSTER TRUCK
Brake Adjustments
Watch the instruction video at www.PrimalRC.com/Video/TruckInstructions.
Because the brake system is on the drive shafts, this truck can stop very quickly. If your truck is not stopping
quickly brake adjustment is necessary.
This may include changing brake pads and/or rotors, adjusting brake cable tension, and adjusting servo end
points. We recommend that you watch our detailed videos online to learn how to adjust your brakes.
9

1/5th RAMINATOR MONSTER TRUCK
Transmission Gears Adjustment
The truck uses a single-speed transmission that has five different gear ratios to choose from. The mid-range
gear set is installed in the truck out-of-the-box (spur/pinion ratio 25:25). Other gear sets that are included with
your truck change the driving and power experience. For crawling, we recommend switching to 20:30 or 23:27
ratio. We recommend 27:23 and 30:20 for optional high-performance engines with greater speeds.
The installed ratio is (25:25) is a good overall gear set that we recommend for common use.
To change the gearing in the transmission: (See diagrams #24 and #25 in this instruction manual)
•Remove the rear drive shaft from the rear output shaft of the transmission (a 4mm hex pin holds it in place).
•Remove the six screws (4mm hex) from the transmission case.
•Remove transmission cover and the two ball bearings that hold the gears on.
•Slide off the two gears and install the gear set with your preferred ratio (pinion gear on the left, spur gear on
the right which is also transmission output shaft)
Note: Ensure that the gears are greased. You can use the grease that is already in the transmission.
Note: The smaller the pinion gear, the slower the truck will drive, but the more low-speed power it will have.
•Reinstall the two bearings, the cover and the rear drive shaft to their original positions.
10

1/5th RAMINATOR MONSTER TRUCK
Troubleshooting Guide
The engine doesn’t start or is not running well
oMake sure your gas and oil are mixed properly.
Mix Gas and 2-Stroke Oil
•Pump gasoline – 87 octane or higher – ethanol-free gas is highly recommended
•2-stroke oil. Amsoil Saber (recommended)
•Mixed 25:1 ratio (gas/oil)
oFollow the instructions in this manual for “Running Your Truck”. If your truck still does not
start, try the following:
•Check to make sure your spark plug is clean and working. Remove the plug from the engine
and inspect the tip. If it is clogged, it will need to be cleaned or replaced. After the plug is
removed, check if the plug is working by:
oAttaching the wire to the top of the plug
oPlacing the tip of the plug very close to the metal of the cylinder.
oPull the pull start a few times. A spark should jump from the plug to the cylinder. If no
spark or a weak spark is observed, replace the plug, ensure the ignition coil and
flywheel are properly gapped, then check again.
oIf still no spark - you likely have a problem with the ignition coil and will need to replace
it.
•The Remote Kill Switch may not be working properly and will need to be tested.
•Check to make sure your carburetor is properly tuned. You may need to adjust the screw
slightly in either direction to find correct tuning for your carb.
•Your engine may be flooded. This can happen if you have pushed the primer bulb many
times, or pulled the pull start a lot of times.
oRemove the spark plug and allow all the fuel in the cylinder to evaporate.
•Your compression may be bad. If you have an older engine, the piston rings may need
replacement.
•Check your carb gasket, intake gasket, cylinder gasket, and crankcase gasket. Can you
hear air whooshing out of the cylinder gasket or crankcase gasket when you pull the
starter? Is air leaking in the manifold gasket behind the carb?
oA gasket leak results in a loss of compression and/or improperly mixed fuel and air. An
easy way to check for intake leaks is to spray the intake manifold and area surrounding
it with WD-40. If the idle changes after you spray the WD-40, there is an intake air leak.
oCommon areas for leaks are between the manifold and the cylinder, and between the
carb and the intake manifold. Inspect the manifold, carb gasket, and intake gasket for
cracks or other signs of damage, replace if necessary.
•Make sure your gas cap is venting properly. There should be a small hole in the plastic cap
and bladder. If it becomes blocked or clogged it can cause issues. Also check to make sure
fuel lines are connected correctly, the fuel lines aren't cut, and the fuel filter is attached.
•Make sure there is no debris (grass/dirt/etc.) clogging the pull start, air filter or engine. This
can result in the engine running too hot and becoming overheated.
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1/5th RAMINATOR MONSTER TRUCK
Troubleshooting Guide (continued)
The servos aren’t moving in correct direction
oCheck servo reverse functions on the transmitter.
The brakes are not working, but the brake servos are moving
oAdjust cable wire to ensure that the brake is pulling properly on the calipers.
oCheck to make sure brake pads are not worn out.
oCheck that drive line axle pins and driveshaft pins are not broken.
Reverse is not working
oMake sure you stop the truck from rolling before switching to reverse.
oCheck that your idle is low. If idle is too high, The clutch may start to engage, preventing the reverse
function from working properly.
oAdjust the reverse servo cable to ensure that it is pulling enough to engage reverse properly.
oCheck that transmitter switch is on
oCheck that truck’s battery switch is on
oCheck the wire connections. Make sure they're intact and connected properly.
oCheck that your batteries are charged
oCheck to make sure your transmitter and receiver are bound.
The servos aren’t responding, or the transmitter is not connecting
oIf the idle is too low, turn the carburetor idle screw clockwise to raise idle. If the idle is too high turn it
counterclockwise until the desired idle is reached. Idling as low as possible is recommended without the
engine stalling. The clutch may start to engage, preventing the reverse function from working properly.
The engine doesn’t idle well
12

1/5th RAMINATOR MONSTER TRUCK
1
Diff Oil
#20000cst
×2
Differential Assembly
MBS4010 MBS4010
MBS4010
×4
M4×10mm
MFS4012
RMT108
RMT145
RMT108
RMT035
RMT051
RMT051
RMT086
RMT108
RMT108 RMT108
RMT108
RMT106
RMT107
RMT107
RMT107 RMT107
RMT107
RMT107
MFS4012
MFS4012
×8
M4×12mm
BBS101504
BBS101504
BBS101504
BBS101504
BBS101504
Bearing 10×15×4mm ×8
BBS203207
BBS203207
BBS203207
Bearing 20×32×7mm ×4
ORS14020
ORS14020
ORS14020
O-Ring D14×2mm ×4
ALWAYS
USE
13

1/5th RAMINATOR MONSTER TRUCK
2
3
4
Front Axle Assembly
MCS4020 ×2
M4×20mm
MCS5040
M5×40mm ×7
MBS5020 ×6
M5×20mm
MCS5014 ×6
M5×14mm
MCS5016
MCS5016
MCS5016
MCS5020
MCS5020
×8
×4
M5×16mm
M5×20mm
MFS6016
MFS6016
MFS6016
×8
M6×16mm
L/R
BBS102206
BBS102206
Bearing 10×22×6mm ×2
BBS122406
BBS122406
BBS122406
BBS122406
Bearing 12×24×6mm ×4
ALWAYS
USE
ALWAYS
USE
ALWAYS
USE
Notice the direction
of the differential
×2
RMT085
RMT001
RMT001
RMT002
RMT006
RMT003
RMT003
RMT007
RMT007
RMT002
MCS5040
MCS4020
MCS5014
MCS5014
MCS5014
MBS5020
MBS5020
14

1/5th RAMINATOR MONSTER TRUCK
5
6
L/R
×2
MBS6020
MBS6020
MBS6020
MBS6020
×6
M6×20mm
MCS5010
MCS5010
×2
M5×10mm
PINS5024
PINS5024
×2
M5×24mm
MCS5016
MCS5016
×1
M5×16mm
MBS5016
MBS5016
M5×16mm ×2
BBS101504
BBS101504
BBS101504
Bearing 10×15×4mm ×2
ORS22025
ORS22025
O-Ring D22×2.5mm ×1
BBS122406
BBS122406
Bearing 12×24×6mm ×2
BBS203207
BBS203207
Bearing 20×32×7mm ×2
ALWAYS
USE
ALWAYS
USE
RMT019
RMT004
RMT052
RMT044
RMT044
RMT044
RMT041
RMT039
RMT009
RMT138
RMT009
RMT039
RMT016
RMT046
MWS202810
1 mm
15

1/5th RAMINATOR MONSTER TRUCK
7
8
9
MFS3014
MFS3014
MFS3014
PRE005
PRE005
MFS3014
MFS3014
×8
M3×14mm
MBS4012
MBS4012
RMT015 RMT015
RMT044
RMT103
RMT103
RMT042
RMT017
RMT018
RMT018
RMT015
RMT015
MBS4012
×4
M4×12mm
MBS6016
MBS6016
MBS6016
×2
M6×16mm
MFS5016
MFS5016
MFS5016
×4
M5×16mm
MBS4012
MBS4012
MBS4012
×2
M4×12mm
MBS6040
MBS6040
×1
M6×40mm
MCS3008
MCS3008
MCS3008
MCS3012
MCS3012
MCS3012
×2
×2
M3×8mm
M3×12mm
MCS2508
MCS2508
MCS2508
M2.5×8mm ×2
ALWAYS
USE
ALWAYS
USE
ALWAYS
USE
16

1/5th RAMINATOR MONSTER TRUCK
10
11
12
159 mm
99 mm
80 mm
20 mm
L/R
MNNS60
MNNS60 MNNS60
MNRS60
MNRS60
MNRS60
M6 Nut
M6 Reverse Nut
×4
×4
MFS6020
MFS6020
MFS6025
MFS6025
MFS6025
MFS6025
×2
×6
M6×20mm
M6×25mm
MCS5012
MCS5012
MCS5016
MCS5016
MCS5016
×1
×4
M5×12mm
M5×16mm
ALWAYS
USE
ALWAYS
USE
ALWAYS
USE
×2 ×2
RMT110
RMT080
RMT038
RMT080
RMT080
RMT050
RMT049
RMT110
RMT111
RMT111
17

1/5th RAMINATOR MONSTER TRUCK
13
14
15
RMT055 ×1
M8×27mm
MFS3010
MFS3010
×4
M3×10mm
MSS4004
MSS4004
×2
M4×4mm
BBS050825
BBS050825
BBS050825
Bearing 5×8×2.5mm ×4
MES40
MES40
E-clip 4mm ×2
MCS3020
MCS3020
MCS3020
×4
M3×20mm
MCS3020
MCS3020
×2
M3×20mm
×2
ALWAYS
USE
ALWAYS
USE
ALWAYS
USE
RMT036
RMT055
RMT095
RMT099
RMT099
RMT095
RMT096
RMT096
RMT097
RMT034
RMT097
RMT054
18

1/5th RAMINATOR MONSTER TRUCK
16
17
18
Rear Axle Assembly
MCS4020 ×2
M4×20mm
MCS5040
M5×40mm ×7
MBS5020 ×6
M5×20mm
MCS5014 ×6
M5×14mm
MFS6016
MFS6016
MFS6016
MFS6016
MFS6016
×8
M6×16mm
BBS102206
Bearing 10×22×6mm ×2
BBS122406
Bearing 12×24×6mm ×2
ALWAYS
USE
ALWAYS
USE
ALWAYS
USE
MBS6010
MBS6010
MBS6010
×2
M6×10mm
Notice the direction
of the differential
BBS102206
RMT085
RMT001
RMT001
MCS5040
MCS4020
BBS122406
BBS122406
RMT002
RMT008
RMT008
RMT002
MCS5014
MCS5014
MCS5014
MBS5020
MBS5020
RMT006
RMT006
19