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BS903T & BS933T 1/10 4WD NITRO-POWERED TRUCK

FEATURE
  • 4WD drive system.
  • 18CXP powerful engine with two speed needles and slide carb.
  • Waterproof dustproof sealed bearbox.
  • Auto-shifting 2-speed transmission. 
  • Sealed superduty p;astic driveshaft.
  • Fast easy assembly and disassembly receiver and battery cover.
  • Supper diff.with four bevel gear. 
  • Blue anodised 6061T chassis.
  • Adjustble threaded long oil-filled shock absorber.
  • integrated roll-hoop and carry handle.
  • Precise sealed ball bearing.

TECHNICAL PARAMETERS
  Length -------------------------------- 410 mm
  Width --------------------------------- 320 mm
  Height ---------------------------------- 165 mm
  Wheelbase ---------------------------- 305mm
  Ground clearance ----------------------23mm
  Tire size ------------------------------ 100*51 mm
  Weight ------------------------------- 2.5 kg
 

Engine-------------------------------- 18#

 

 

 

 
 
BREAK IN PROCEDURE

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 ansmitter antenna fully extended when running the engine!

1.Fill the fuel tank.

2.Prime the engine-while the engine is cool,place your finger over the tuned pipe's exhaust hole   and pull the recoil gently several times.Do not over-prime!Stop when you see fuel in the fuel line at the carb.

3.Install a glow starter(B7004C) into the glow starter ans attach the starter to the glow plug.

4.With the throttle at idle,start the engine by pulling the recoil using short,quick pulls.DO NOT pull the recoil starter's string to the end.You only need 10 to 12 inches of pull to start the engine with the throttle at idle.

Sometimes it is helpful to start the engine at around half throttle.When the engine starts,immediately return the throttle to idle.If this is not done the engine can over-rev and cause engine damage.

IMPORTANT! FIXING A FLOODED ENGINE

If the engine id difficult to turn over with the recoil starter,especially if it is brand new,loosen the glow plow plug a hagf turn before starting the engine.This allows some compression to escape,but the engine will still start.Make sure you tighten difficult to pull,the engine is flooded-there is too much fuel inside the engine.Remove the glow plug,then turn the buggy upside down and pull the recoil 5 or 6 times.This will clear the engine of fuel,and you will notice the recoil pulls easier.Rep;ace the glow plug and repeat the starting procedure.

STOPPING THE ENGINE

Pinch the fuel line that runs to the carburetor.Pinching this line will restrict the fuel flow and the engine will quit within a few seconds.Never place your finger over the exhaust to stop the engine.This could result in serious 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 car. 

 
BREAK IN PROCEDURE

Some things to remember during break-in

1.Run with the body off.This will keep the engine cooler.

2.Keeo 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.

TANK 1

Your first tank of fuel should be running the car 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.

1.Open the high speed needle valve 4-1/2 turns from fully closed(counterclockwise).This is factouy set already,but check it to make sure.When closing the high-speed needle,close until youfeel some resistance.DO NOT overtighten or you will damage the engine.

2.Fill the fuel tank and start the engine.

3.Run the buggy on a smooth surface with the body off.

4.Run back and forth at medium speeds,slowly accelerating and decelerating the buggy.

5.Run the buggy 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 noumally takes around 10-15 minutes.

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 buggy 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 buggy 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 buggy 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 buggy for the complete tank and then let cool.The engine is now ready to be perfoumanced tuned.

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 buggy off the ground.

                          
 
         BS903 2-Speed transmissions                    BS933 Three Diff
 
2-CHANNEL TRANSMITTER SYSTEM:
The servo must be set at the center position befor installation,to set the neutral turn on the transmitter and receiver,set the trim tabs in the center position,and turn off the receiver and transmitter in succession,the servo will be in the proper neutral position for installation.
  
 
 
     
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