Running In - Jamara X2-CRT Sport RTR Gebrauchsanleitung

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Running In

Note:

This motor has been constructed to the closest possible tolerances however due to the use of

different materials it will still be necessary to run the motor in to ensure maximum power and

long life.

Preparing to run the motor in:

The motor should be mounted into the model in accordance with the instructions and all screws

or bolts must be correctly tightened. All components such as the clutch, exhaust tank and fuel

lines must be correctly fi tted and connected. Always use a clean oiled air fi lter. Our motors have

been designed for use with Magnum model fuel with a maximum Nitromethan content of 20%.

The motor should be run-in with the same fuel that will be used in normal use. The choice of

glow plug is dependent on the air temperature, in cold weather (between app. -1 and +5° C) a

plug with a rating of '3' is ideal. When the temperature is app. 10 to 20° C '4' is a good choice

and in mid summer when the temperature is between 20 and 40° C a plug with '5' or '6' is

recommended.

Starting the motor for the fi rst time:

Fill the tank with the correct Magnum fuel.

The carburettor needles are factory pre-set for normal operation but for running-in they will need to be

altered slightly. Open the main needle one turn (anticlockwise) and turn the Air Bleed Screw app. ½ turn

clockwise so that the carburettor barrel stays slightly open (visually check this). This will raise the tick-over

speed slightly and ensure that the mixture is slightly rich to run the motor in safely.

Place your fi nger over the end of the tuned pipe and operate the pull starter 3-4 times. This will draw fuel

into the carburettor

and you should be able to see the fuel being drawn in if you watch the transparent fuel tube feed to the

carburettor. Connect a fully charged glow plug power supply to the glow plug and use the pull starter to

start the motor. Be careful not to pull the pull starter out too far as this can damage the unit. We recom-

mend using a series of short sharp pulls as this will normally start the motor quickly and reduces the risk

of snapping the pull start cord. Due to the way in which the fuel/ air will be distributed within the motor's

crank case and cylinder, it is quite normal to have to operate the pull cord several times before the motor

runs. Once the motor is running leave the glow plug battery connected for app. 1 minute to allow the mo-

tor to reach the correct operating temperature. After the glow plug battery has been disconnected slowly

open the throttle and ensure that the motor continues to run and increases it's RPM.

Running-In:

The motor should be run for 2-3 tanks with the needle in this position but not at full throttle! After every tank fi lling the motor must be allowed to fully

cool down before starting it again. After the 3rd tank the needle can be gradually closed in 1/8 steps to increase the power. REMEMBER, the motor must be

allowed to fully cool down between runs when running-in. This will extend the motors life, increase it's power and failure to run the motor in properly will

invalidate the warranty!

Checking the motors temperature:

In normal use the cylinder head temperature should not exceed 120° C. If the motor is running too hot, richen the mixture by 1/8 of a turn until the correct

temperature is achieved. For accurate monitoring of the motors's temperature we recommend using our Contact Less Inferred Thermometer, Order No. 17

0133. The temperature should be measured at the glow plug.

Carburettor basic settings:

If you totally loose the setting for your carburettor here are the correct basic

needle positions. Firstly screw the needles fully in (do not force!).

Main Needle:

3 Turns Open

Low Needle:

3,25 Turns Open (with throttle closed)

Idle speed adjustable screw:

Carburettor barrel should stay 0.6 - 1 mm open

Warning!