Summary of Contents for Compact Radial Engines MZ201
- Page 1 INSTRUCTION AND MAINTENANCE MANUAL MZ201 We recommend reading this manual before installing or using the engine. Compact Radial Engines Inc. #3-8473 124 Street Surrey, B.C. Canada. V3W 9G4...
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Page 2: Table Of Contents
Starting up the engine for the first time and running in Final check Start up procedure Adjusting the carburettor The reducer Trouble-shooting Wiring diagram Maintenance schedule Exploded view of the MZ201 List of spare parts Preliminary flight inspection Engine repairs logbook Modifications or different mountings Date compared to original model... -
Page 3: Presenting The Mz201 Engine
PRESENTING THE MZ201 ENGINE Congratulations on having chosen the MZ201 engine. The special design of the various components makes this a particularly light-weight, sturdy and reliable model. If it is installed correctly and serviced regularly, your engine will last for a long time and meet your requirements in full. -
Page 4: Introduction
INTRODUCTION Like all high-performance engines, the MZ201 demands care and maintenance. It is vitally important to use suitable fuel and a good blend of synthetic oil for two-stroke engines with a 50:1 ratio. Proper servicing and appropriate use are essential requisites. -
Page 5: Important Safety Tips
Safety is everybody’s concern. We set out here below an incomplete list of the main safety precautions to be taken when using the MZ201. It would be impossible to list all the circumstances which may occur when you use this engine, but by being aware of the potential dangers, you will also reduce the risks. -
Page 6: Technical Specifications
TECHNICAL SPECIFICATIONS Model MZ201 Type two-stroke, two-cylinder, lamellar engine Cooling system air cooling system, by means of forced air (fan) or a propeller, depending on the type of installation Direction of rotation anti-clockwise seen from the PTO Capacity 626cc (Nikasil cylinder) -
Page 7: Performance Diagram
MZ201 PERFORMANCE DIAGRAM Type:MZ201T K gm 50.00 45.00 40.00 35.00 30.00 25.00 20.00 15.00 10.00 5.00 0.00 3100 3600 4200 4700 5200 5700 6200 25.34 29.43 37.89 44.38 40.31 38.56 36.70 K gm RP M MAIN TORQUE SETTINGS Name Cylinder head bolts... -
Page 8: Oil And Fuel
OIL AND FUEL Whichever blend of oil and fuel you use, there follows some advice that will help you keep the engine in perfect running order. • The presence of impurities in the fuel is the main cause of engine failure. To prevent the fuel from being contaminated, it is necessary to take action at source, because the potential risk increases if impurities enter the fuel tank. -
Page 9: Ground Check To Be Carried Out Before Starting Up The Engine For The First Time
How to prepare the blend A good method for preparing the blend could prevent a good deal of problems. By adopting the same method every time, the preparation will become an automatic process that will simplify matters no end. 1. Always use a suitable container: ensure it is clean, free of condensation and that you know the exact capacity. -
Page 10: Starting Up The Engine For The First Time And Running In
STARTING UP THE ENGINE FOR THE FIRST TIME AND RUNNING IN The first time you start it up, run the engine at 2000 - 2500 rpm for the first 15 - 20 seconds, then run it at the lowest revs (1500 rpm) for a few seconds, before stepping up the revs to 3000 - 3500 rpm. At this point, we recommend running in the engine before using it, pushing the engine to its full potential. -
Page 11: Final Check
FINAL CHECK The engine is now ready to be used as intended. After having inspected all the bolts, there is one final and extremely important component to be checked: the spark plug. The spark plug is a sufficiently reliable indication of the carburation. Remove the spark plug and check the colour of the ceramic insulator at the electrode end. -
Page 12: Adjusting The Carburettor
ADJUSTING THE CARBURETTOR Please see the separate “Tillotson”manual for high and low speed carburettor adjustment. Throttle cable - Once the throttle cable has been fitted, adjust the freeplay between the carburettor and the throttle lever by adjusting the tensioning device. - Set the throttle lever to minimum. -
Page 13: The Reducer
F = 5 kg When the MZ201 leaves the factory, it is already fitted with a speed reducer and the belt tension is adjusted correctly. However, during the first few minutes of use, the belt “settles” into position and loosens slightly. - Page 14 ALIGNING THE PULLEYS When replacing one of the two pulleys in order to change the reduction ratio and adapt it to the propeller diameter, always check that the two pulleys are perfectly aligned. A misalignment of over 0.5 mm, could shorten the life-span of the belt.
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Page 15: Trouble-Shooting
TROUBLE-SHOOTING Whatever model you choose, the engine will only function if: - good spark is produced, - there is a proper air/fuel mix. Often, the majority of problems arise when one of the above conditions is lacking. Get organised and follow a strict procedure in order to identify the problem. - Page 16 2. PROBLEM: INCONSISTENT IDLE Likely cause Remedy: The starter motor is switched on. Switch off the starter motor. Badly adjusted carburettor. Adjust the carburettor. The inlet manifold is leaking air. Tighten the joints, replace any faulty parts. 3. PROBLEM: THE ENGINE IS RUNNING IRREGULARLY Likely cause: Remedy: Defective spark plug.
- Page 17 5. PROBLEM: THE PERFORMANCE OF THE ENGINE IS UNSATISFACTORY Likely cause: Remedy: The recommended fuel mix has not been used. Check the fuel mix. Insufficient fuel feed. Check the fuel feed and clean the fuel filter if necessary. The air filter is dirty. Clean or replace the air filter.
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Page 18: Wiring Diagram
BATTERY WHITE/RED EARTH WHITE/RED OUTLET REGOLATOR RELAY EARTH WHITE/YELLOW ST ARTER NO T USED IGNITION MOTOR SWITCH BA TTERY 12V 2.5A WARNING Ensure the battery cables are securely soldered to the terminals. Bad connections will lead to over-heating and irreversible damage to the battery. If you wish to be able to disconnect the battery, cable connectors of the right size may be used. -
Page 19: Maintenance Schedule
MZ34 ENGINE MAINTENANCE SCHEDULE Checks and work to be carried out (hours) 100 125 150 175 200 225 250 1) Tighten the cylinder head screw nuts 2) Check the starter cable 3) Check the starter motor starting ring 4) Check the spark plug 5) Replace the spark plug 6) Check and clean the spark plug cap 7) Check the ignition alternator... -
Page 21: List Of Spare Parts
Fig. n? Designation Part number Quan. Note Cranckshaft 3410003 UNI6606-3x3,7 Woodruff key 6205JC3 Bearing Bearing 6005JC3 Cranckcase 3410001 3410007 Centering pins ? 5 mm Screw UNI5931-6x50 3410008 Safety spring washer Screw UNI5931-6x45 Oil seal 3410024 25-42-7NBR 3410031 Oil seal 25-37-7NBR 3410012 Stud bolt M8x25x5x15... -
Page 22: Preliminary Flight Inspection
3410072 4,2 mm Insulated faston 3410032 Intake manifold gasket 3410010 Reed valve 3410053 Tillotson carburetor adapter plate UNI5933-8x25 Screw 3410074 Tillotson carburetor gasket 3410067 Tillotson carburetor 3410068 Gasket and membrane kit for fuel pump 3410070 Fuel strainer screen 3410077 Strainer cover gasket 3410078 Strainer cover 3410079... -
Page 23: Engine Repairs Logbook
Daily checks (To be carried out as part of the preliminary flight inspection at the beginning of each flying day) Check the electrical contact is on “stop”. Remove any water contained in the fuel tank. Check the inlet manifold and the carburettor are securely fitted. Warning: a cracked inlet manifold may perforate the piston. - Page 25 Back connection 186 x 143mm...
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