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DISTRIBUTED EXCLUSIVELY BY

Global Hobby Distributors

18480 Bandilier Circle, Fountain Valley, CA  92708

All contents copyright © 2005, Global Hobby Distributors

Version V1.0  May 2005

Kit Product # 145619

OPERATION, TUNING GUIDE AND REPLACEMENT PARTS

MAMMOTH ST NITRO STADIUM TRUCK FEATURES:

Factory-Built and Painted

Powerful XTM Racing 24.7 Engine with Tuned Pipe

Hitec Aggressor AM Radio System

High-Torque Metal Gear Steering Servo

2-Speed Transmission for Awesome Speed

Low Center of Gravity for Awesome Handling

Double Bracing Front and Rear

New Upper Arm Design for More Precise Handling

Full Ball Bearings

Heavy-Duty Side Dust Guards

3mm Aluminum Chassis with Curved Edges for Added Strength

Large Front Bumper and Skid Plate

Triple Vented Disc Brakes

Chrome-Plated Universals and Dogbones for Added Strength

Steel Differentials

Gear Boxes Allow Easy Differential Removal

3.5mm Rear Sway Bar

Fully Threaded, Oil-Filled Aluminum Shocks with 3.5mm Shafts

Dish-Style Racing Wheels with 17mm Hex Mounts

Factory-Glued Tires with Inserts

Adjustable Camber, Caster and Toe-In Front and Rear

Water Resistant Receiver and Battery Boxes

IMPORTANT

  Before operating your new XTM Racing Mammoth ST

Nitro Stadium Truck, please read and understand the warnings listed on
the next page.  Failure to do so could lead to bodily harm and/or injury.

The XTM Racing Mammoth ST Nitro Stadium Truck is not intended for
persons under 12 years of age, unless closely supervised by an adult.

I

NCLUDES

 H

ITEC

 A

GGRESSOR

 R

ADIO

 

AND

 P

OWERFUL

 XTM 24.7 E

NGINE

!

Summary of Contents for Mammoth ST

Page 1: ...h Curved Edges for Added Strength Large Front Bumper and Skid Plate Triple Vented Disc Brakes Chrome Plated Universals and Dogbones for Added Strength Steel Differentials Gear Boxes Allow Easy Differential Removal 3 5mm Rear Sway Bar Fully Threaded Oil Filled Aluminum Shocks with 3 5mm Shafts Dish Style Racing Wheels with 17mm Hex Mounts Factory Glued Tires with Inserts Adjustable Camber Caster an...

Page 2: ...attery boxes are not waterproof therefore do not drive through water wet grass mud or snow Because your model is operated by radio control it is important to make sure you always are using fresh and or fully charged batteries Never allow the batteries to run low or you could lose control of the model If your model becomes stuck allow the engine to idle then retrieve your model by hand To prevent e...

Page 3: ...ze Mammoth Performance You ll dominate Unlimited Monster Truck Class with the Mammoth ST This purpose built truck inspired by the awesome performance and size of our original Mammoth is a no compromise no holds barred hi performance race truck Look closely you ll see an incredibly low CG clean and easy to maintain chassis layout a 2 speed tranny all new diff housings new multi support upper arms t...

Page 4: ... fuel Do not use glow plugs intended for four stroke airplane engines or glow plugs with an idle bar Using the wrong type of glow plug will cause the engine to run erratically and make it difficult to tune properly The wrong type of glow plug could also damage the engine AN XTM RACING 3 GLOW PLUG IS INCLUDED IN THE ENGINE XTM Racing 20 Nitro Car Fuel P N 145850 Use For Break In and For Normal Use ...

Page 5: ... AA Alkaline batteries that power the transmitter Crystal This is the frequency crystal of the transmitter You can change crystals in both the transmitter and the receiver so that you and your friends can drive at the same time No two radio systems nearby can be operated on the same frequency On Off Switch Turns the transmitter on and off Three L E D s show the power status of the batteries Servo ...

Page 6: ...nk The fuel tank holds the fuel that your engine uses This fuel tank includes a fuel pressure nipple that connects to the tuned pipe to pressurize the fuel system and also features a quick flip type lid for fast refueling Pull Start Handle Used to start the engine in place of an electric starter Shock Each shock is oil filled and uses a spring that is well suited for most off road conditions The s...

Page 7: ...and tighten it gently until it stops IMPORTANT Do not force the antenna into place or tighten it too strongly Doing so could cause damage to the antenna and or transmitter Remove the plastic battery cover from the bottom of the transmitter Install 8 AA Alkaline batteries into the battery tray double checking to make sure that the polarity is correct Reinstall the battery cover and set the transmit...

Page 8: ... cover When installing the switch make sure that you leave the charge cord outside of the receiver box but secured to the chassis so it doesn t get damaged WARNING Never attempt to recharge non rechargeable batteries The batteries could explode and cause serious injury MAMMOTH ST NITRO STADIUM TRUCK UPGRADE TIP Remove the four screws from the receiver mounting box cover then remove the cover Uncoi...

Page 9: ...r attempt to operate your Mammoth ST Nitro Stadium Truck if the radio control system is not functioning properly MAMMOTH ST NITRO STADIUM TRUCK SAFETY TIP Always turn on the transmitter first followed by the receiver After you re done turn off the receiver first then turn off the transmitter This will prevent the possibility of a runaway model or damage to the servos STEP 3 DOUBLE CHECK THE STEERI...

Page 10: ...le servo reversing switch on the top of the transmitter to change the direction PRO TIP If the carburetor barrel does not open completely turn the throttle trim dial on the transmitter until the carburetor barrel opens completely when you pull back fully on the throttle trigger Push the throttle trigger forward The carburetor barrel should stay in the idle position open about 1 16 1mm and the brak...

Page 11: ...y to make adjustments to the carburetor during the break in process which will be detailed in the next section WARNING PLEASE READ THIS INFORMATION BEFORE PROCEEDING Your Mammoth ST Nitro Stadium Truck comes equipped with the user friendly and powerful XTM Racing 24 7 nitro engine Before starting the engine for the first time you MUST read this section very carefully This section details the diffe...

Page 12: ...ew is closed too far the engine may die during idle Ideally the engine should idle smoothly yet slow enough so that the clutch stays disengaged HIGH SPEED NEEDLE VALVE The high speed needle valve is preset from the factory for the initial starting procedure Do not make adjustments to it at this time The high speed needle valve is used to meter the air fuel mixture at full throttle Turn the needle ...

Page 13: ...GS An XTM Racing 3 Hot Heat Range glow plug is included with your engine We suggest having a couple of extra glow plugs handy because it can be expected that glow plugs will wear out quickly during the engine s break in process This glow plug will suit most users during the break in process You may or may not need to change to a different type of glow plug after break in is complete There are a va...

Page 14: ...perly break in your new engine Please follow the steps closely FUEL RECOMMENDATION Fuel can make a big difference in the way your engine performs For the break in period you should use a fuel specifically designed for R C car engines that contains no more than 20 nitromethane Once the engine has been adequately broken in about 45 minutes of run time you can switch to an R C car fuel containing up ...

Page 15: ... 10 minutes then restart it Set the high speed needle valve mixture to a slightly leaner setting about 1 8 turn more in Repeat the procedure above then stop the engine and let it cool for approximately 10 minutes Repeat the procedure above leaning the high speed needle valve slightly more each time In all you should run the engine a total of about 45 minutes After 45 minutes of run time the engine...

Page 16: ...ou know the proper way to tune the engine you can make slight adjustments to the carburetor until you are satisfied with the performance To keep your engine operating at peak performance there are some basic maintenance procedures that need to be performed on the engine on a regular basis After you are finished running the engine for the day pinch the fuel line to stop the engine This will allow t...

Page 17: ...gs the same for each side For example if you change the spring tension on the right front shock you should change the spring tension on the left front shock the same amount etc Do not make any changes that are more than 3 degrees from the initial settings listed or the handling characteristics of your truck will become very poor Continued On Next Page The brake linkage on your truck is preset from...

Page 18: ...l out the hinge pins Install the desired toe angle block Installation is the reverse of the disassembly procedure To adjust the toe angle of the front tires turn the tie rods steel rods connecting each wheel to the steering arm in or out with an adjustable wrench To adjust the toe angle of the rear tires you need to replace the toe angle block described below To adjust the toe in on the rear tires...

Page 19: ...se a 1 5mm hex wrench to adjust the grub screw To make the transmission shift at a higher speed turn the grub screw clockwise 1 8th of a turn To make the transmission shift at a lower speed turn the grub screw counterclockwise 1 8th of a turn If you need to reset the 2 speed transmission shift point to the factory setting follow these simple procedures Carefully turn the grub screw using a 1 5mm h...

Page 20: ...ase that is good for most driving conditions You can make fine tuned adjustments to each differential by removing the differentials from the chassis opening them up and replacing the grease already inside the differentials with silicone differential oil Adding heavier silicone oil will tighten the differentials and adding lighter silicone oil will loosen the differentials If your truck feels loose...

Page 21: ...ith Nitro Car Cleaner you should oil the moving parts of the chassis Do not oil the clutch bell spur gears or the brake discs Always use new fuel and keep the cap on the fuel tightly closed As fuel ages it absorbs water which degrades the fuels performance and will cause erratic engine operation After you have finished using the engine for the day remove the glow plug from the engine and squirt se...

Page 22: ...dle mixture screw set too lean C Reset idle mixture to factory setting P12 D Old or contaminated fuel D Replace with new fuel E Engine flooded with too much fuel E Remove glow plug and expel fuel from cylinder P12 F Air leak in fuel system and or engine F Replace fuel lines and or tighten all engine bolts 2 Engine does not draw fuel A Air leak in fuel system and or engine A Replace fuel lines and ...

Page 23: ...ee A One or more shocks sticking A Clean and or rebuild the affected shock B Bent shock shaft B Rebuild affected shock C Bent or otherwise damaged hinge pin C Replace hinge pin 7 Shocks leaking oil A Shock seals worn A Replace shock seals B Bent shock shaft B Rebuild affected shock 8 2 speed transmission shifts A Shift point not adjusted properly A Readjust shift point to shift at a higher speed P...

Page 24: ...ctly from your local XTM Racing dealer If your dealer does not stock XTM Racing products you can order replacement parts and hop ups directly from us at the address below XTM RACING 18480 Bandilier Circle Fountain Valley CA 92708 Phone 714 963 0329 Fax 714 964 6236 Email service globalhobby net SECTION 1 ASSEMBLY MANUAL PAGES 24 49 IMPORTANT INFORMATION ABOUT PART NUMBERS There are two different p...

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Page 49: ...49 EXPLODED VIEW ...

Page 50: ...s These numbers can be used when ordering parts They can also be used to cross reference parts to the 6 digit XTM Racing part numbers Note that most parts drawings also include a list of manufacturer assembly parts numbers and quantity This makes it easy to know what parts are included in each package A parts list is provided starting on page 55 to help with cross referencing parts ...

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Page 56: ...56 SECTION 3 HOP UP PARTS DRAWINGS AND PARTS LIST PAGES 57 61 ...

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Page 59: ...59 HOP UP PARTS LIST BEGINS ON NEXT PAGE ...

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Page 64: ... more details pertaining to the service requested If your vehicle is out of the warranty period you may request an estimate of services at the time you return your vehicle for service An omission of this request implies permission for Global Services to service your vehicle at our discretion Include a method of payment for any service charges Send the unit to us by United Parcel Service Federal Ex...

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