Bombardier-Rotax 377 UL Operator'S Manual Download Page 4 | Manualshive

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FOR HISTORICAL REFERENCE PURPOSES ONLY: THIS INFORMATION MAY BE OUTDATED!

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Summary of Contents for 377 UL

Page 1: ...ignition system and BING carburetor EDITION 111990 This manual contains important safety and maintenance information concerning your engine It must remain with the engine at time of resale F O R H I...

Page 2: ...Modifications or special applications F O R H I S T O R I C A L R E F E R E N C E P U R P O S E S O N L Y T H I S I N F O R M A T I O N M A Y B E O U T D A T E D...

Page 3: ...264870 24 12 Electric starter 25 Electric starter fitted to p t o side 25 Electric starter fitted on magneto side battery starter relay fuse 25 13 Instruments electronic tachometer hour meter 26 14 S...

Page 4: ...es have undergone considerable durability te sting this engine is not a certified aircraft engine It has not received any individual safety or durability testing and conforms to no aircraft stan dards...

Page 5: ...unsafe manner Check engine suspension frequently as well as the drive components fuel lines wiring and fuel and air filters Checkfor fuelcontamination airvents etc Protectenginewhilenotin usefrom anyc...

Page 6: ...ce to avoid contamination is at the source Once in your fuel container a very harzadous potential exists Use a clean safety approved storage container Filter all fuel entering and leaving this contain...

Page 7: ...gasoline S1EP no 3 Add gasoline to obtain desired mixture ratio use fine mesh screen Fuel must be of minimum M O N 83 or R O N 90 octane rating S1EP no 4 Replace container cap and shakethecon tainer...

Page 8: ...sary Pull starter until firmly engaged and then pull through vigorously Above procedure should be repeated until engine begins to fire As soon as engine starts shift the throttle slowly to low speed a...

Page 9: ...exceeding the maximum allowed CHT of 2500 C 480 of interrupt the run in and cool down the engine atidle for approximately one minute and continue where you have interrupted Be sure to use a safe run...

Page 10: ...unning smooth Do not exceed maximum engine rpm refer section 18 technical data During cruise and descending it is very important not to create a lean condition with high rpm and low throttle opening T...

Page 11: ...on 4 jet needl e 5 idlerjet 6 needlejet 7 mixing tube llllO 8 mainjet 9 sievesleeve 10 float needlevalve Ill8 11 float 12 float chamber 13 airscrew 14 adjustment screw 15 venttube III 11 16 startingpi...

Page 12: ...h views from top and from the intake side to ensure an equal mixture distribution to both cylinders see ill below Changing parts should be done only after all other items have been checked and then by...

Page 13: ...en crankcase and adaptor flange insert O ring and install adaptor flange with 4 Allen screws M10 x 45 to crankcase The seat of the screw heads must be plane and free of marks or burrs Apply LOCTITE 22...

Page 14: ...d keep it in its location with some grease Apply LOCTITE 221 on 4 stud threads M8 and screw them into crankcase Install gearbox assembly and tighten it with 4 hex nuts M8 All 6 nuts M8 to be torqued t...

Page 15: ...vel plug Secure vent plug with approved safety wire 9 2 Preflight Instructions ATTENTION As supplied by the factory irrespective whether gearbox is separate from or fitted to engine there is no oil in...

Page 16: ...nd starter and the starting pulley The magneto housing need not be removed Once cam follower has polished in and points are re adjusted settings will hold for considerable time Tocheck whether theigni...

Page 17: ...to max points gap and verify refer section 19 If gap is out of tolerance the armatureplatemust be turnedand thetimingprocedure must berepeated NOTE Gap too small tum armature plate clockwise Gap too l...

Page 18: ...creasepoint gap o III 18 Tooearly Turnarmatureplate clockwise III 17 0 Toolate Turnarmatureplate counter clockwise o III 19 F O R H I S T O R I C A L R E F E R E N C E P U R P O S E S O N L Y T H I S...

Page 19: ...way gap is too small turn armature plate counter clockwise Repeat timing procedure Ifbreak away gap cannot be set maintaining the points gap tolerance consult a service center Once completed reconnect...

Page 20: ...ition damping box The damping box is installed in order to eliminate induction sparks out of correct phase and to reduce ignition energy in order to avoid glowing pre ignition which might cause holes...

Page 21: ...pect lean mixture If calibration is correct and there is no evidence of manifold leaks lack of fuel or incorrect float settings don t change the plugs to a colder range Make sure that cooling system i...

Page 22: ...his rectifier regulator can also be used without battery In this case the regulated RMS voltage will remain between 11 and 12 Volts as long as a minimum load of 1 amp is provided If no minimum load is...

Page 23: ...ballast load of 1 amp is required example lamp 12 V 15 W III 26 main ground tmessl III 27 moin ground mass III 28 main lround mass see section 12 wiring diagram in a circuit wit It 0 u t battery CI f...

Page 24: ...y metn ground tmass 0 Q c C Q wiring diagramin conjunction wit h a battery main ground mass 0 Q Q c C Q c wiring diagramfor electricstarter Ill 31 main ground mass see section 12 1 I j i fuse 16 5 r E...

Page 25: ...least 16 Ah high discharge battery should be utilized A higher battery amp hour rate would be preferable Cables supplying power to the starter from the battery and to ground should be 10 mnf flexible...

Page 26: ...section Cylinder head temperatures are taken at the spark plug seat Exhaust gas temperatures are measured at 100 mm 4 in from the cylinder sleeve See section 18 for temperatures 13 1 Electronic tacho...

Page 27: ...the now AC output yellow and yellow black wires or to the 30W AC output green and green black wires A tachometer rectifier or auxiliary loads can be also connected to these outputs without interferenc...

Page 28: ...use ofan after muffler kit Be aware that modifications will require a different carburetor setting Enquire at your dealer for more information and consult ROTAX spare parts list 14 3 Winter Winter ca...

Page 29: ...rized service centers or dealers 2 Disconnect spark plug leads with a turning motion for all maintenance and inspection procedures 3 Putting spark plug connector back on make sure that spark plug term...

Page 30: ...attachment Engine coolant system Air filtration system Fuel filtration system Electrical wiring loose connections stripped wires damaged insulation Operation of lighting system We highly recommend tha...

Page 31: ...an opening in therope sheave The key clamp 0 visible in the opening has to be pushed out in the opposite sense of thepulling direction Pull the rope out of therope sheave Then insert the new starter...

Page 32: ...sioned to specification V belt deflection 15 3 1 Mounting ofV Belt Install the fan without V belt as per illustration Place V belt diagonally between two blades of the fan turn the fan until the V bel...

Page 33: ...tion After approximately 50hoursofuse thecombustion chamber mayrequire de carbonizing To inspect remove exhaust manifold and check for deposits on piston crown Decarbonizing is required if deposit thi...

Page 34: ...ve f lel from tank drain fuel lines Follow all safety rules and do not run for a prolonged period above idle 15 12 After storage check Inspect engine and engine environment for possible foreign materi...

Page 35: ...vice on your ROTAX engine and use as a reference Purchase Date First Use Break in Inspection _ Repair date Summary of work done Hui 1 F O R H I S T O R I C A L R E F E R E N C E P U R P O S E S O N L...

Page 36: ...Engine repair log cont Repair date Summary of work done KuTAX 1 F O R H I S T O R I C A L R E F E R E N C E P U R P O S E S O N L Y T H I S I N F O R M A T I O N M A Y B E O U T D A T E D...

Page 37: ...72 carbo 26 0 kW 35 0 hp 29 5 kW 40 0 hp 31 5 kW 43 0 hp 35 0 kW 47 6 hp 37 0 kW 50 0 hp type 503 1 carb type 503 2 carb for all above types 6800 l min 2 light alloy cylinders with cast iron sleeve pe...

Page 38: ...cable choke type 377 pneumatic fuel pump DF 44 type 447 1 carb pneumatic fuel pump DF 44 type 4472 carb pneumatic fuel pump DF 44 type 503 1 carb pneumatic fuel pump DF 44 type 503 2 carb pneumatic fu...

Page 39: ...on pusher application specify left hand propeller specify right hand propeller air cooled by axial fan or free air for special applications without carburetor intake silencer fuel pump exhaust system...

Page 40: ...it 0 30 mm 012 in 0 40 mm 016 in BREAK AWAY GAP 13 17 mm 5 7 in Section 20 20 Piston cylinder clearance PISTON CYLINDER CLEARANCE NEW PARTS type 377 type 447 type 503 0 09 mm 0035 in 0 09 mm 0035 in 0...

Page 41: ...r cowling M8 15 14 Intake manifold screws M8 22 15 Intake manifold screws M6 10 16 Intake rubber flange screws M8 14 17 Spark plugs 14 cold engine 27 18 Hex screws for starter gear Mf 22 19 Lock nuts...

Page 42: ...ER ROTAX GMBH A 4623 GUNSKIRCHEN AUSTRIA Telefon 07246 271 0 Telefax 43 7246 370 Telex 25546 brgk a Tolegr Bombrotax Gunskirchen iROTAX F O R H I S T O R I C A L R E F E R E N C E P U R P O S E S O N...

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