Break-In Instructions For The Engine - Reely 1:8 GP Buggy Ultra Sonic 4WD RtR Notice D'emploi

n) Break-in instructions for the engine
The following must be observed during initial break-in:
• Low rotation speed
• Rich fuel-air mixture
• Short running times with cool-down phases (approx. 3 min. each)
• Run-in time (real engine runtime) totalling approx. 45 minutes
Fuel:
The addition of nitromethane in the model fuel increases the ignitability of the fuel and thereby the performance of the
engine. In the running in phase use a model fuel with a small addition of nitromethane in order to avoid overheating the
engine. The fuel should furthermore have a higher percentage of oil ("rich" carburettor setting) so that the lubrication
of the engine is improved until piston and cylinder liner are run in.
After having filled in the fuel and started the engine as described above, you can start running in the engine.
The wheels must be freely suspended in the air! Place the model e.g. on a car stand and perform the first
run-in phase while the model stands still!
In order to be able to use the full power spectrum later on, the engine should have two to four tank fillings at a "rich"
carburettor setting and run with changing throttle. This is indicated by the strong white smoke emission from the
exhaust pipe.
1st initial break-in phase:
• After each engine running (tank filling), allow for a sufficient cooling phase. Afterwards, the mix can be made leaner
by screwing in the main nozzle needle step by step.
• Leave the glow plug connector attached and let the engine warm up for approximately 1 minute without accelerating.
If necessary, unscrew the main nozzle needle a little (the flow rate will be bigger)
• Remove the glow plug connector after a one minute of warming up phase.
• Let the engine run for about 2 – 3 minutes with cooling down phases in between. Increase the speed slightly with
short throttle bursts.
The engine runs very roughly and the model moves very reluctantly.
• Shut the engine off after 2 - 3 minutes and let the engine cool down for approx. 10 min.
2nd initial break-in phase
• Set the engine slightly "leaner" by twisting the main nozzle needle in by 1/8 of a turn and then start it again.
• Let the engine run again for about 2 – 3 minutes with cooling down phases in between. Now the engine should
accept the throttle a little better, but there is still smoke.
If the engine revs up briefly and then stalls, unscrew the main nozzle needle slightly once more.
• Turn the motor off again and leave it to cool down for 10 min. again.
• Repeat this procedure and make the mix slightly leaner each time.
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