Translations:KAVAN AP09 - Instruction Manual/79/en: Difference between revisions

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==== '''Needle valve adjustment''' ====
==== '''Needle valve adjustment''' ====
1. Start the engine and disconnect the glow plug. Wait about 1 minute for the engine to warm up.
# Start the engine and disconnect the glow plug. Wait about 1 minute for the engine to warm up.
# After the engine has warmed up, give full throttle and slowly close the needle valve until the engine reaches maximum speed. Then slowly open the needle valve, until the speed drops audibly. If you have a tachometer, this is a drop of 200–300 rpm.
# With the engine running at full throttle, carefully raise the nose of the model to an angle of about 60 degrees. The mixture shouldn‘t get too lean, but you should hear a slight increase in speed. This is normal. If the engine stalls or loses speed when the model is nose up, the mixture is too lean and the needle valve needs to be opened slightly. The engine must always emit a clear trail of gray smoke when running.

Latest revision as of 08:07, 24 October 2025

Message definition (KAVAN AP09 - Instruction Manual)
==== '''Needle valve adjustment''' ====
# Start the engine and disconnect the glow plug. Wait about 1 minute for the engine to warm up. 
# After the engine has warmed up, give full throttle and slowly close the needle valve until the engine reaches maximum speed. Then slowly open the needle valve, until the speed drops audibly. If you have a tachometer, this is a drop of 200–300 rpm. 
# With the engine running at full throttle, carefully raise the nose of the model to an angle of about 60 degrees. The mixture shouldn‘t get too lean, but you should hear a slight increase in speed. This is normal. If the engine stalls or loses speed when the model is nose up, the mixture is too lean and the needle valve needs to be opened slightly. The engine must always emit a clear trail of gray smoke when running.

Needle valve adjustment

  1. Start the engine and disconnect the glow plug. Wait about 1 minute for the engine to warm up.
  2. After the engine has warmed up, give full throttle and slowly close the needle valve until the engine reaches maximum speed. Then slowly open the needle valve, until the speed drops audibly. If you have a tachometer, this is a drop of 200–300 rpm.
  3. With the engine running at full throttle, carefully raise the nose of the model to an angle of about 60 degrees. The mixture shouldn‘t get too lean, but you should hear a slight increase in speed. This is normal. If the engine stalls or loses speed when the model is nose up, the mixture is too lean and the needle valve needs to be opened slightly. The engine must always emit a clear trail of gray smoke when running.
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