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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.    This would include 
crash  damage,  incorrect  fuel/  lubricant  or  mix  ratio;  incorrect  mixture  settings; 
incorrect  propeller  selection,  inadequate  cooling,  incorrect  voltages  for  the  ignition, 
etc. 
 
Disassembly  and  /or  modifications  to  the  engine  or  ignition  system  will  void  the 
warranty. 
 
The warranty does not cover damage resulting from a mishap, or damage caused by 
incorrect operation of the product in terms of the operating instructions, or shipping 
costs associated with any warranty service. 
 
 

Mounting the Engine

 

 
Whereas the threads in  the engine stand-offs and prop driver are perfectly  adequate 
for the purpose, they are easily damaged by excessive tightening or by cross threading.   
Take care when starting the bolts to ensure that they engage the threads properly and 
make use of a suitable thread lock rather than applying excessive torque. 
 
LOCTITE  242  Blue  or  an  equivalent  thread  lock  is  preferred.    Be  aware  that 
products such as LOCTITE RED 262; 272; 277 are considered permanent and require 
specl treatment to remove.ial 
 
Propeller bolts should be applied without thread lock as they should be re-tightened or 
checked  regularly.    Similarly,  bolts  passing  through  a  wooden  firewall  should  be 
checked regularly. 
 
JC Engines are not  sensitive to  orientation and can thus  be mounted in  the position 
best suited to the particular installation, cowl shape, fuel tank location, etc. 
 
JC Engines are not  sensitive to  fuel  tank position, thus  the fuel  tank  can  be located 
anywhere  in  the  model  to  suite  the  available  space,  CG,  scale  detail,  etc.    It  is 
however  important  to  point  out  that  fuel  may  siphon  from  the  fuel  tank,  out  of  the 

Summary of Contents for 23EVO II

Page 1: ... Volts typically 1200Mah Replacement Spark plug NGK CM 6 or equivalent Operating Instructions Thank you for purchasing our JC23EVO II 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 your...

Page 2: ... and keep spectators at a safe distance away when operating the motor Stop the motor before making any adjustments Always use the correct length propeller bolts not too long or too short Spinner cones must never touch the propeller maintain at least a 1mm clearance all around We recommend the use of an ignition kill switch to stop the motor as well as setting up the carburetor linkage so that the ...

Page 3: ... with any warranty service Mounting the Engine Whereas the threads in the engine stand offs and prop driver are perfectly adequate for the purpose they are easily damaged by excessive tightening or by cross threading Take care when starting the bolts to ensure that they engage the threads properly and make use of a suitable thread lock rather than applying excessive torque LOCTITE 242 Blue or an e...

Page 4: ...m cap head bolts are provided This allows up to 10mm for the firewall washers and spacers Please ensure that these bolts do NOT bottom out in the mounting pillars the bolts will not be holding the engine securely and the threads may be damaged Ensure that at least 6 mm of the bolt threads penetrate the mounting pillars 8mm is better Longer or shorter bolts are available Ignition Module Mount the i...

Page 5: ...le between the ignition and components and the receiver and components Spark Plug JC Engines are supplied Rcexl CM 6 spark plugs We have seen plugs of low quality on other engines but we have had no problems with the supplied plugs on any of the JC Engines despite many hours of operation Some experienced modelers recommend the use of NGK CM 6 these are available from your distributor Fuel and Oil ...

Page 6: ...d performance and a substantially longer life We don t believe in lengthy bench running and would far rather see the engine flying at varying throttle settings but not subjected to hard flying for the first two hours that is really only eight 15 minute flights Propellers Always check the prop bolts and inspect your prop and spinner before each flight The bolts should be checked for correct tightne...

Page 7: ...to check if it was flooded and to speed the drying out process Needle Adjustments The needle closest to the firewall H is the high speed needle the other one L is the low speed needle Turning the needles clockwise leans the fuel mixture reduces fuel flow and turning the needles counter clockwise richens the fuel mixture increases fuel flow just like a shower tap Settings will vary with altitude te...

Page 8: ...ht if it appears to sag off during full throttle flight maybe in a climb land without delay and richen anti clockwise the H needle1 8 turn If the engine burbles a bit in the mid range the L needle may need to be closed a bit Check again that the engine does not stumble when throttled up smartly lean on the L needle Trouble Shooting Motor won t start Flooding Over choking can cause flooding Clear a...

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