Step 4
: Now that your engine is idling, you want to let it do so for an entire fuel tank. Make sure your tank is
completely filled, and then let the car run till it is almost out of gas. It is best not to let the engine run
completely out of gas, because it causes the engine to run lean for a split second when it runs out of fuel. At
this early stage of your engines life, it is best not to do this. You may need to adjust the idle slightly so the car
stays running. The engine should be revving smoothly and wheels should
NOT
be spinning. If wheels are
spinning you must adjust the idle to the point that the wheels do not spin. It is normal for fuel to drip from the
exhaust during break in. When the tank is almost empty, shut the engine off by pinching the fuel line. Move
the flywheel so that the piston is at Bottom Dead Center (BDC). Allow the engine to cool for at least 15
minutes before moving to step 5.
WARNING: THE ENGINE, EXHAUST AND OTHER PARTS OF THE VEHICLE ARE HOT AFTER
RUNNING.DO NOT TOUCH ANY OF THESE COMPONENTS IMMEDIATLEY AFTER RUNNING.
PERMIT THEM TO COOL DOWN FIRST.
Step5
: For this step, you will actually be driving the vehicle. Fill the tank with fuel. Start up the engine and
drive it in figure eight patterns. Do not use more than ¼ throttle during this step. Continue driving the car
in a figure eight until the fuel runs out You want to make sure the engine still sounds like it is running very
rich. It will have a “sputtering” sound to it, and it should be blowing lots of thick smoke out of the exhaust
pipe. In addition to thick smoke, it is common for excess fuel to come out of the exhaust pipe. Many
beginners are concerned when they see so much fuel coming out of the pipe, but do not worry. When the
vehicle runs out of gas, return the piston to Bottom Dead Center (BDC) immediately. Allow the engine to
cool for 15 minutes.
Step6:
For this step, repeat step 5.
Step 7
: For this step, fill the tank with fuel, start the engine and again drive in figure eight patterns. This
time you can bring the car up to ½ throttle. You will notice that the idle of the engine may start to go up. This is
due to the engine breaking in and causing less resistance on the piston and sleeve. You may need to turn the
idle down a bit. You should still pay close attention to the amount of smoke the pipe is putting out.It should
still have lots of thick smoke. When the tank runs out, make sure to return the piston to Bottom Dead Center
immediately. Let the engine cool for 15 minutes.
Step8
: This is your final step in the break in process. Fill the tank up with fuel, and start the engine. You will
be driving the vehicle in straight lines this time, from idle to ¾ throttle. Try to use the full range of throttle,
idle to ¾ throttle. Try to use the full range of throttle, going slowly from no throttle to ¾. After this tank runs
out, again return the piston to BDC, and let it cool for 15 minutes. After the engine cools you may now run
it normally!
Your engine is now broken in, but it will not be the last time you need to adjust it. Keeping it tuned properly is
an ongoing process. Depending on how often the weather changes where you live, you may need to adjust
them slightly each time you run. Congratulations on breaking in your motor, and have fun with your new
Nitro R/C vehicle!
It may be necessary to perform some after run maintenance to your engine if you plan on storing the vehicle
for a long time. Unburnt fuel inside the engine can cause corrosion which can damage the internal
components of the engine. It is recommended to run the engine out of fuel, and to add after run oil if the
engine is going to sit for a long period of time. This is not necessary if you are running the engine often.
This section will go over some of the most common problems you may experience as a newcomer to the hobby,
and some of the most common fixes for these problems.
9
10
Engine Starts, but immediately stalls :
1
)Idle set too low – Adjust your idle screw so the engine idles higher.
2
)Low Speed Needle needs Adjustment – The engine could be getting flooded with fuel, lean the low speed
needle slightly.
3
)Engine not getting fuel – Check to see if any of your fuel lines have holes in them.
4
)Bad glow plug – If the engine dies right after you take the glow igniter off, it is possible it is the plug
causing it. Try starting the car and leaving the glow igniter on for a moment. If the engine no
longer stalls, the glow plug needs replacement.
Engine is slow, or has slow acceleration :
1
)Clutch slipping – Replace clutch shoes
2
)Engine not tuned properly – The engine could be running to lean or too rich. Return needles to factory
settings and start over
3
)Glow plug foul or worn out – Replace the glow plug.
Engine stalls during normal driving :
1
)Out of fuel, hole in fuel line – The engine could be running out of fuel. Refill the tank and check for
holes in the fuel lines.
2
)Carburetor not adjusted properly – Return the needle settings to factory settings and start from scratch.
This could be from the high speed needle running to lean.
Engine is overheating, or blows little smoke from the exhaust :
1
)The high speed needle is too lean, fatten this setting until you see smoke come from the exhaust
under acceleration.
2
)Engine is worn out – The engine will start to run hotter as it gets older.
Vehicle “Glitches” or has lack of control :
1
.Batteries in radio dead – Replace radio batteries
2
.Receiver batteries are low or loose – Replace the receiver pack batteries, or check to make sure they
are in place. Using a rubber band or tape to hold the batteries in place will prevent them from getting
knocked loose during running.
3
.Crystals or Receiver damaged – Fuel getting on the receiver can damage it, and hard impacts can cause
the crystals to be damaged.
4
.Interference – Things such as chain link fences, electrical lines, and other people using r/c cars can
cause conflicts, try a different area.
1
)Never operate the vehicle in crowded areas.
2
)Always operate the vehicle with the body on.
3
)Do not handle nitro fuel near open flames.
4
)Store fuel in a cool, dark place.
5
)Keep fuel away from children.
6
)Only run the engine in a well ventilated area.
7
)The engine, pipe, and other moving parts of the vehicle get very hot.
8
)Always check to make sure no one else is operating a R/C vehicle on the same frequency.
9
)If the vehicle stops responding to you, discontinue use immediately, until you find the cause
of the problem.
Section 5:Troubleshooting
Section 6:Precautions
Summary of Contents for Electric RC Vehicle
Page 1: ...INSTRUCTION MANUAL 14...
