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INTRODUCTION

Thank you for choosing our engine the CORS-AIR M 25 Y. We invite
you to spend some time reading this manual, which will let you discover
all the features of your engine. Advices on maintenance and operation
will help you to have a reliable engine and to preserve your investment.
Furthermore, we invite you  to deliver this manual together with the
engine if you sell it, so it can be useful for the next owner as well. The
manufacturer and the resellers are ready to answer  your questions and,
if necessary, to solve every problem, because YOUR AND THE OTHER
PEOPLE’S SAFETY IS THE MOST IMPORTANT THING FOR US.

IDENTIFICATION OF THE OWNER

 
Owner

Address

Serial number
             
Reseller

Address

Owner’s signature

Reseller’s signature and stamp

Date of sale

The Company reserves the right to make  technical and aesthetic changes without notice in order to improve the quality of  the
product.

Summary of Contents for Black Devil

Page 1: ...ogether with the engine if you sell it so it can be useful for the next owner as well The manufacturer and the resellers are ready to answer your questions and if necessary to solve every problem because YOUR AND THE OTHER PEOPLE S SAFETY IS THE MOST IMPORTANT THING FOR US IDENTIFICATION OF THE OWNER Owner Address Serial number Reseller Address Owner s signature Reseller s signature and stamp Date...

Page 2: ...ed and copper plated with rolls fit for high speed Carburettor diaphragm Feeding reed valve with 4 petals on the crankcase Electronic ignition type CDI electric version type TCI manual version Regulation of spark advance 18 at 7000 rpm Spark plug NGK B9ES Reduction with belt Poly V from 1 to 2 2 to 1 to 2 6 Cylinder head temperature max 200 C Fuel mixture of premium petrol 98 octane and oil at 2 O...

Page 3: ... DO NOT try to start the engine without the propeller DO NOT start the engine with loose bolts or parts since this can cause the detaching of the propeller the ovalization of the propeller holes the damage of the electric start and the breakage of the rubber mounts IMPORTANT BEFORE FLYING CHECK ALWAYS EVERY PART OF YOUR CRAFT FROM ENGINE TO FRAME Verify that there are no damaged electric wires tha...

Page 4: ...eeping the engine for 20 seconds at maximum speed and switching it off suddenly without letting it slow down Once you have found the perfect mixture do not change it unless you change flight place or climate conditions since register screws can be damaged by continuous adjustments RUNNING IN All CORS AIR engines before being delivered are subject to a severe quality check in order to verify if all...

Page 5: ...so advisable to install an instrument CHT to control the head temperature at sight TENSION OF THE REDUCTION BELT DRIVE USE CAUTION Attention a belt which is over tensioned can do permanent damage to the bearings inside of the pulley hubs and drive shaft Therefore we strongly suggest for you to follow carefully these instructions Before adjusting the belt take a felt pen or marker and make a small ...

Page 6: ...the spark plug and pour into the hole a teaspoon of oil for engines then re install the spark plug letting the propeller turn slowly by hand for 2 or 3 times completely Disassemble the propeller Loosen the reduction belt Plug the hole of the exhaust pipe Cover everything with a blanket and put it in a dry place Once a month charge the battery and let the pinion of the drive shaft turn by hand 2 or...

Page 7: ...EMAIN AT YOUR DISPOSAL FOR EVERY INFORMATION AND ADVICE ABOUT THE USE OF THE ENGINE TROUBLE SHOOTING THE ENGINE DOES NOT START Check switch on off cable of the spark plug correct spark plug gap all the connections of the electric plant that fuel arrives correctly from the tank to the carburettor FLOODED ENGINE Dismantle the spark plug and dry it well before re assembling it let the propeller turn ...

Page 8: ...perature of the engine with proper instruments CHT In addition dismantle the propeller at regular intervals and check that it is perfectly balanced since an unbalanced propeller even slightly creates micro vibrations which are not felt by the pilot but can damage seriously parts of the engine with consequent breakages Please do NOT forget that the propeller has mass and a considerable inertial mom...

Page 9: ...HEAD CYLINDER n Pcs 4 10 CRANCKASE STUD n Pcs 4 11 GASKET OF THE HEAD 12 GASKET OF THE CYLINDER BED 13 JOINT DECOMPRESSOR WITH VALVE 14 DECOMPRESSOR 15 SEAL RING OF DRIVE SHAFT n Pcs 2 16 COVER OF BACK SUPPORT BASE 17 BACK SUPPORT BASE 18 STARTER 19 COUPLER FOR STARTER 20 HANDWHEEL 21 COIL 22 REED VALVE 23 FLANGE FOR CARBURETTOR BED 24 CARBUTETTOR 25 FLANGE AIR FILTER 26 ADJUSTER FOR ACCELERATOR W...

Page 10: ...LUDED IN THE PACKAGE OF THE SPARE PARTS FOR THE PIECES MARKED WITH AN ASTERISK PLEASE SPECIFY SIZE PARTS FOR M25 BLACK DEVIL WITH ELECTRIC START 31 DRIVE SHAFT COMPLETE OF CONNECTING ROD 32 ELECTRIC STARTER 33 FLANGE FOR ELECTRIC STARTER 34 COVER OF BACK SUPPORT BASE 35 IGNITION 36 CHARGE REGULATOR 37 COIL 38 CROWN WHEEL COMPLETE OF PINION ...

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