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Operating instructions 

 

The second of a new generation of 4-stroke engines! 
 

 

Czech Republic 

 

           

 

 
 
 
 
 
 

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Summary of Contents for 85 FS

Page 1: ...Operating instructions The second of a new generation of 4 stroke engines Czech Republic 1 ...

Page 2: ...ne Mounting For mounting the engine inside the model airplane we recommend using 5mm high strength steel bolts large flat washers and lock nuts Warning Check the engine mounting for tightness periodically Exhaust The elbows of the exhaust can rotate As soon as the desired position is achieved the center 19 mm bolt can be tightened to fix them in place Warning Do not damage the exhaust elbows ends ...

Page 3: ... amount of unburnt engine oil used to lubricate the camshaft that needs to be discharged Please remove the cap from the small yellow threaded nozzle on the bottom side of the engine and connect a hose to it routing the oil away toward the chassis is preferred Warning Keep the discharge hose clear otherwise engine damage can occur Propeller Mounting It is very important to mount the propeller corre...

Page 4: ...ine oil added Gas Oil Liter Liter 1 0 025 2 0 05 3 0 075 4 0 1 5 0 125 6 0 15 Gas Oil US Galon OZ 0 5 1 6 1 3 2 1 5 4 8 2 6 4 2 5 8 0 3 9 6 Use 95 98 octane gasoline The engine oil used should be high performance two stroke engine oil Warning To achieve long lasting engine performance always use high performance superior quality engine oil 4 ...

Page 5: ...the other side and reassemble it If you do not have much experience doing the valve adjustment in this manner 1 Send the engine to an authorized repair shop for the valve adjustment 2 Get the information from the manufacturer at techinfo rotomotor cz Now the engine has been set up and no further adjustment will be needed unless other engine work is being done Ignition Installing the ignition is an...

Page 6: ... first start has to follow these steps Make sure the ignition is turned off Engage the carburetor choke while if possible covering the carburetor air intake with your finger to achieve the best engine suction Spin the propeller blade approximately ten times then uncover the carburetor air intake turn the choke off turn the ignition on and start the engine without the choke The only time this metho...

Page 7: ...he engine turns over turn the choke off and start the engine Warning Do not remove the gasoline from the chamber after use This would let air into the system and make it harder for the engine to start Safety Instructions Always use caution when handling the engine Even slow spinning of the propeller can start the engine and cause an injury Make sure to have the model airplane secured in place when...

Page 8: ...e Type Product serial number Date of purchase Signature Dealer s name address Stamp Strojírna Cita s r o Karolíny Světlé 391 549 31 Hronov Czech Republic www rotomotor cz e mail rotomotor rotomotor cz Tel 00420 491 485 211 00420 777 596 8 ...

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