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JC ENGINE POWER JC30EVO User Manual

Model airplane engines
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 2 Stroke air cooled single cylinder, single ring.
 Walbro membrane pump carburetor with dual needles and manual choke
 Automatic advancing electronic ignition
 Output Power:
 Idle Speed:
 Maximum Speed:
 Displacement:
 Bore and Stroke:
 Weight: Engine -
Exhaust –
Ignition -
 Propeller:
 Ignition Battery:
 Replacement Spark plug:
Thank you for purchasing our JC30EVO, we hope it will bring you many
hours of enjoyment. It is important to familiarize yourself with these safety
precautions, as well as the operating instructions - these engines can cause
serious injury to people and animals. This will help you avoid injury or harm
to yourself, other persons or animals.
JC ENGINE POWER CO.,LTD will not be held responsible for any loss, injury or
damage resulting from inappropriate use of its products - you are responsible for the
safe operation of your equipment.

Safety Instructions

JC 30EVO User Manual
Model Airplane Engines

SPECIFICATIONS:

4.0 hp at 9000rpm
1300 rpm
9000rpm
30 cc
36mm× 30mm
920g
90g
120g
17-8 to 20-6
4.8 to 6.0 Volts, typically 1200Mah
NGK CM-6 or equivalent

Operating Instructions

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Summary of Contents for JC ENGINE POWER JC30EVO

  • Page 1: Specifications

    NGK CM-6 or equivalent Operating Instructions Thank you for purchasing our JC30EVO, we hope it will bring you many hours of enjoyment. It is important to familiarize yourself with these safety precautions, as well as the operating instructions - these engines can cause serious injury to people and animals.
  • Page 2  We recommend that you never operate the motor or fly alone.  Always be very aware of the propeller and its dangers while operating the motor. Avoid distractions and loose clothing. It is always a good idea to paint the propeller tips white or yellow - propellers are near invisible when spinning.

  • Page 3: Mounting The Engine

    Warranty The true spirit of the JC Engines warranty endeavours to fairly resolve any matters that impact on the proper operation or performance of the engine and ignition system, as may result from defective materials or workmanship from the manufacturer. This intent may be compromised by the very nature of the application of model airplane engines, whereby various forms of harm are possible that are not related to defective workmanship and /or materials on the part of the manufacturer.
  • Page 4 carburetor (overflow /breather) whilst the engine is not operating if the fuel level (in the tank) is higher than the fuel inlet on the carburetor (overflow /breather) when the model is parked or stored. This could be a fire hazard and or cause damage to the model, the more so if the engine is mounted with the carburetor behind the firewall (see below).
  • Page 5 Whereas the propeller should be treated as potentially live and dangerous at all times, it is uncommon for an engine with this ignition to backfire, snap or bite. The ignition will trigger a spark irrespective of the speed that the magnet passes the Hall Effect sensor, so it is not necessary to flip the prop with all your might, just flip it through compression and stay clear.
  • Page 6 For Break-in, we recommend a known brand of petroleum-based 2 stroke lawn mower oil. Use of high quality synthetic oils will only prolong the running in time on a JC engine, in particular those engines with two large piston rings. Outboard oil is not recommended for use in air-cooled engines.
  • Page 7 Only after carefully checking over your airplane and engine, including the recommended range check for your equipment – then fuel up. An informed helper is always a good idea. From cold (first start of the day):  Close the choke and open the throttle approx 50%. ...

  • Page 8: Trouble Shooting

    With the engine at its slowest reliable idle, open the throttle briskly. The engine should throttle up nicely – if so start leaning (clockwise) the L needle 1/8 turn at a time until the engine hesitates /stumbles when opened. The L needle is now too lean, open it (anti-clockwise) 1/8 turn and try again until the engine throttles up smartly without stumbling.

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