GM-Racing 90161.RTR Bedienungsanleitung Seite 11

Montage Mittelantrieb - Motor
Mid-Differential Set with Engine Assembly
21 GM-Racing 90161.RTR Monster Truck MT8 Nitro
OPERATING THE REMOTE CONTROL
• Run your MT8 never with low transmitter or receiver batteries.
• Never forget switch off the radio after running your MT8, otherwise the batteries do not last long.
• Turn on the transmitter fi rst, then the vehicle.
• After driving fi rst turn off the vehicle, then the transmitter.
• For optimal use fi rst check the steering and throttle trim positions:
Steering Trim
The MT8 should go straight without turning the steering wheel. If not, rotate the Steering Trim knob in the
direction needed for the vehicle to go straight.
Throttle/Brake Trim
Let the throttle in neutral position and push the vehicle on the ground a little. It must be easy to roll. Now
press the brake, the vehicle should stop immediately. If not, rotate the Throttle Trim knob right of the steering
wheel in the direction needed.
CARBURETOR BASIC SETTINGS
Before starting the engine please check the carburetor linkage. Then remove the air-
fi lter from the carburator. Turn on the transmitter and model and check the apparent
gap. In neutral position the gap should be between 0.7 and 1mm (also see fi gure).
Now pull the throttle to full speed and check the carburetor to open completely.
CHECKLIST BEFORE YOU START
• Check all screws on permanent seat.
• Check all the moving parts to work without binding.
• Check the air fi lter. When appropriate, clean the fi lter and oil it with new Air fi lter Oil –
out oil on the fi lter!
• Check the Fuel tubes for leaks.
• Check the batteries in the remote control.
• Check your frequency, so that a trouble-free operation is ensured.
RUN-IN AND ADJUSTING THE ENGINE
The Run-In phase of the engine is crucial for the proper performance. If you don´t keep the Run-In conditions
exactly, you can damage the engine and shorten its life. During the Run-in time always use the same fuel
(with the same nitro content) as you want to use it later. Although the carburetor is adjusted correctly by the
factory, you have to deal with the following settings and with the Run-in procedures. If you change the fuel
brand or run the engine under very different conditions (outdoor temperature hot / cold, high / low location,
etc.), you have to adjust at least the high-speed needle in order to prevent overheating or to achieve the ma-
ximum performance of the engine. Let the engine never run at full throttle without the wheels on the ground.
THE RUN-IN PROCEDURES
During the fi rst three fuel-tank fi llings the high-speed and the idle adjustment screw should be clearly on the
„rich" side (see explanation below). When accelerating there should be slight delays and thick smoke, and
the smoke must cease if the model is gaining speed. At full speed should be a clear smoke from the exhaust
plume. Leave the vehicle on fl at ground on a running track oval. Push the throttle slowly when the vehicle
is on the straight line, and let the car run on idle when you are close to the curves. This will also give you a
sense for the reactions and the handling of the vehicle. If you are an experienced racer, you can also run-in
the engine by place the car against a wall or other fi xed object and run the engine in idle position for at least
two fuel-tank fi llings (increase the idle RPM with the Throttle Trim or the idle adjuster screw on the carburetor,
so that the engine will not die).
GM-Racing 90161.RTR Monster Truck MT8 Nitro
Never run with
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