Duratrax Maximum ST Pro User Manual

Warranty

• DuraTrax®will warranty this kit for 90 days after the purchase date from defects in materials or

workmanship. DuraTrax

will either 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.

• To return your Maximum ST Pro for repairs covered under warranty you should send your truck to:

Hobby Services

1610 Interstate Drive

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

Before Building:

We want the building and operating of this vehicle to be a success, so BEFORE removing any parts from the parts bags please read this manual thoroughly and watch the included video to familiarize yourself with the model. If for any reason you think this model is not for you, return it to your dealer immediately. PLEASE NOTE: Your hobby dealer cannot accept a return on any model after assembly has begun.

ASSEMBLY AND OPERATION MANUAL

Introduction.................................................................................2

Safety Precautions .....................................................................2

Helpful Hints................................................................................2

Stress-Tech

™

Parts Guarantee...................................................2

Repair Service.............................................................................3

Specification & Description Changes.......................................3

Screw Information ......................................................................3

Required Items for Completion .................................................3

Tools You Will Need....................................................................3

FINISHING THE RTR VERSION..................................................4

ASSEMBLY OF THE PRE-BUILT VERSION...............................6

Preparing the Radio System ..............................................6

Steering Servo Assembly ...................................................6

Assembling the Radio Tray ................................................8

Installing the Throttle Servo...............................................9

Throttle and Brake Linkages ............................................10

Radio Adjustments ............................................................11

Prepare the Engine............................................................12

Finishing.............................................................................12

Carburetor Settings ..................................................................13

Breaking in the Engine.............................................................13

Running the Engine..................................................................14

Engine Maintenance .................................................................15

Performance Tuning .................................................................16

Maintenance Tips......................................................................17

Engine Trouble Shooting.........................................................18

Thank you for purchasing the DuraTrax Maximum ST Pro. This manual contains the instructions you need to build, operate and maintain your new nitro R/C stadium truck. Read over this manual thoroughly before building or operating the Maximum ST Pro.

When the safety precautions are followed, the Maximum ST Pro will provide years of enjoyment. Use care and good sense at all times when operating this radio controlled stadium 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 Maximum ST Pro near people.

Spectators should be behind the driver or at a safe distance away from the vehicle.

• The engine and exhaust produces quite a bit of noise. If

you are disturbed by the amount of noise this truck produces, wear ear protection such as earplugs. 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 carbon dioxide just like real cars. Do not operate this model indoors.

• Before turning on the transmitter, make sure that no one else is on your frequency.

• Avoid working over a deep pile carpet. If you drop a small part or screw, it will be difficult to find.

• Place a mat or towel over your work surface. This will prevent parts from rolling off and will protect the work surface.

• 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.

• Test fit all parts before attaching them permanently.

We have engineered the Maximum ST Pro to take the rough and tumble abuse that makes R/C stadium trucks fun. We are so confident of the quality and durability of the StressTech™plastic parts that we will replace any Stress-Tech plastic part you break during the first 6 months you own the truck. Just send in the part to us and we will send you a Free replacement. Please see the Maximum ST Pro parts list for the items covered under the Stress-Tech guarantee.

To receive your free replacement part please send the following to the Hobby Services address listed on the cover of this manual:

• The broken part must be included.

• The part number and description of the broken part.

• Dated copy of your invoice or purchase receipt.

• Your name, phone number and shipping address.

STRESS-TECH™PARTS GUARANTEE

HELPFUL HINTS

SAFETY PRECAUTIONS

INTRODUCTION

TABLE OF CONTENTS

Repair service is available anytime.

• After the 90 day warranty, you can still have your Maximum ST Pro repaired for a small charge by the experts at DuraTrax’s authorized repair facility, Hobby Services, at the address listed on the front page of this manual.

To speed up the repair process, please follow the instructions listed below.

1. Under most circumstances return the ENTIRE system: truck

and radio. The exception would be sending in a Stress-Tech part. See the instructions under Stress-Tech Guarantee.

2. Make sure the transmitter is turned off, all batteries are

removed and fuel is drained from the tank.

3. Send written instructions which include: a 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).

4. Also be sure to include your full return address.

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.

Do not use too much force when tightening self-tapping screws into plastic. Overtightening will cause the threads in the plastic to strip. We recommend that you stop turning a self-tapping screw when you feel some resistance as the head of the screw comes in contact with the plastic. Avoid using powered screwdrivers when assembling this kit. They tend to overtighten the screws. Do not use thread locking compound on any self-tapping screws. The thread locking compound may damage the plastic. IMPORTANT: Use thread lock on any fastener that is threaded into metal or fastened with a nut. Vibration from the engine will cause the screws to loosen if thread locking compound is not used.

To operate the Maximum ST Pro these items are required:

• Fuel (DuraTrax Red Alert fuel - DTXP0520)

• Air Filter Oil (DTXC2465)

• Glow plug wrench (DTXR1170)

• Hobby knife (HCAR0105), #11 blades (HCAR0211)

• It is also helpful to have a couple of extra glow plugs on hand (O.S. #A3 plug - OSMG2690)

The DuraTrax Nitro Starter Pack (DTXP0200) contains fuel, fuel bottle, glow plug starter, glow plug wrench and glow plug.

For the Pre-Built version of the Maximum ST Pro, you will also need:

• 2-channel radio with two (2) standard servos (FUTJ20**)

• Twelve (12)

“AA” batteries - Four (4) for the receiver and

eight (8) for the transmitter

• Small bottle of thread locking compound (GPMR6060)

• Glow plug starter (DuraTrax Rapid Heat - DTXP3000)

• Fuel bottle (DuraTrax Kwik-Pit Bottle - DTXP0125)

To assemble the Pre-built version (DTXC0090), you will need the following tools:

• Phillips head screwdriver (DTXR0124)

• Flat blade screwdriver (DTXR0158)

• Needle-nose pliers (DTXR0300)

• Wire cutters or diagonal cutters (HCAR0630)

• Hobby knife (HCAR0105), #11 blades (HCAR0211)

• Drill with 1/4", 1/8", 5/64" (or 6mm, 3mm, 2mm) bits

TOOLS YOU WILL NEED

REQUIRED ITEMS FOR COMPLETION

SCREW INFORMATION

SPECIFICATION & DESCRIPTION CHANGES

REPAIR SERVICE

M3x14 Screw

14mm

3mm

M3x14

Self-Tapping

Screw

14mm

3mm

❏ 1. Remove the transmitter and truck from the box.

❏ 2. Remove the twist-tie from the receiver antenna. (The

receiver antenna is a bundled thin wire that is attached to the receiver.) Thread the receiver antenna underneath and through the hole in the radio plate next to the receiver switch.

❏ 3. Remove the antenna tube from the parts bag. Thread

the receiver antenna through the antenna tube. The antenna will be longer than the antenna tube. DO NOT COIL OR CUT THE ANTENNA. Press fit the antenna tube through the hole in the radio plate. Place a 1/8" long piece of fuel tubing over the antenna tube and wire to secure in place. TIP: Run the antenna through your fingers to straighten out kinks before running through the antenna tube.

❏ 4. Thoroughly soak the air filter foam with some oil (not

included) and then squeeze out the excess oil. DuraTrax Air Filter Oil (DTXC2465) is available from your local hobby dealer. Attach the adapter tube to the air filter base with one of the included tie straps. Place the air filter onto the carburetor and secure it in place with the other included tie strap. Cut off the excess part off of both straps.

❏ 5. Remove the four screws from the top of the radio plate

and remove the receiver battery holder.

FINISHING THE MAXIMUM ST PRO RTR VERSION (DTXD90**)

❏ 6. Remove the receiver battery holder from the radio box.

Install (4)

“AA” (included) into the battery holder in the

configuration molded into the battery holder.

❏ 7. Re-install the receiver battery holder under the radio

plate. Make sure that the receiver switch is in the off position. Plug the connector on the receiver battery into the socket on the receiver switch. Tuck the wires between the servo and receiver battery so they will not get caught on anything.

❏ 8. Install the transmitter antenna by screwing it into the

hole on the top of the transmitter.

❏ 9. Slide open the battery door on the bottom of the

transmitter. Place 8 “AA” batteries into the holder in the configuration molded into the plastic on the battery holder. Re-install the battery door.

❏ 10. Turn on the transmitter using the switch on the side

(see photo step 9). The red light on the side of the transmitter should light up. If there is no light on, turn the transmitter off and check to ensure that the batteries are making contact with the metal contacts in the battery holder. Make sure the batteries are installed correctly. Turn the transmitter on and check for the red light. If the red light appears, turn off the transmitter. If the red light blinks, the batteries are low and should be replaced.

❏ 11. Apply decals to body if desired.

❏ 12. Remove the body clips from the

parts bag. Place the body

on the body mounts. On

each body mount place a body clip.

Congratulations, you have completed preparations! Before running your new truck, please take the time to carefully read the instructions and watch the video before running and breaking-in the engine. Make sure you follow the safety precautions and most of all...HAVE FUN!

❏ 1. Install the “AA” batteries in the transmitter and the

receiver holders.

❏ 2. Install and extend the transmitter antenna.

❏ 3. Connect the steering servo, throttle servo and

receiver battery to the receiver.

❏ 4. Uncoil and extend the receiver antenna.

❏ 5. Adjust the servo trims of the transmitter to the

neutral position.

❏ 6. Switch on the transmitter.

❏ 7. Switch on the receiver.

❏ 8. Operate the steering and throttle control. Make

sure the servo arms move in proportion to the movement of the steering wheel and throttle trigger.

❏ 9. Switch off the receiver, then the transmitter.

❏ 1. Remove the Maximum ST Pro stadium truck from

the box.

Place a check mark in the check boxes after each step is completed.

❏ 1. From bags PA001 and PA003, remove (8) 3 x

8mm

self-tapping screws, and the (2) L-shaped servo mounts.

❏ 2. Attach the servo mounts to the steering servo as

shown with (4) 3 x 8mm self-tapping screws.

Note that the

servo spline will mount towards the rear of the

truck.

STEERING SERVO ASSEMBLY

PREPARING THE RADIO SYSTEM

ASSEMBLY OF THE MAXIMUM ST PRO PRE-BUILT VERSION (DTXC0090)

Servo Arm

Steering Servo

Throttle Servo

Receiver Battery Holder

4-AA Batteries

Antenna

Receiver

Receiver Switch

Transmitter

8-AA Batteries

Antenna

Before installing the radio system in the pre-built DuraTrax Maximum ST Pro read the manufacturer’s instruction manual and follow the instructions shown below.

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