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BASIC ENGINE PARTS

Heatsink Head

Carburetor

Typr 60M 

Crankshaft

Propeller nut

Crankcase

Thrust Washer

Glowplug

Beam Mount

Pump

As delivered, the carburetor is not fit to the engine. 

Secure it as follows.

INSTALLATION OF THE CARBURETOR

Retainer Nut

Carburetor Rubber

Gasket

0.2mm gap

Loosen the retainer nut, press the carburetor well 

down into the intake boss, compressing the rubber 

gasket as shown in the sketch, before re-tightening 

Nut.

Rotate the retainer nut gently until it stops, then 

tighten a further 90-120 degrees. Do not over-

tighten the screw as this will damage the carburetor 

body.

1.

2.

Pump Holder

60M One-way Valve

Return Screw

Cover Plate

Press down until the gasket becomes almost invisible.

Because of initial tightness, a standard 

electric  starter  may  have  difficulty  in 

rotating the engine when cold, before it 

has  been  adequately  run-in.  In  this 

case, use a high-torque type starter. 

DO  NOT,  however,  confuse  tightness 

with  the  symptoms  of  hydraulic  lock 

caused by an excess of fuel within the 

cylinder  -  often  the  result  of  over-

priming.

Attempting to force the engine to turn 

over  in  this  condition  may  cause 

internal  damage.  Instead,  remove  the 

glowplug,  invert  the  engine  and  eject 

surplus  fuel  from  the  combustion-

chamber.

Note:

FEATURES

As delivered, the carburetor is not fit to 

the engine.

Standard accessories

Glow Plugs No.8 (1 pc.), A5 (1 pc.)

Woodruff Key

Needle Adjusting Screw (M2.6x5  1pc.)

Silicone tube

Note:

Carburetor Complete 60M

T nipple

Instruction manual

(   2.5x   5.5xL300mm)

The MAX-91SX-H RING C-Spec PS VIPER is

installed with VIPER twin-plug head made

by OMI, USA instead of the original head.

Twin-plug haw power increase effect and

special head material develops extreme

cooling effect. Another difference from the 

standard version is it employs matched

new design low friction piston which offers

stable hovering as wellas powerfull flight.

Also, Return Needle Valve Holder which

makes the adjustement range wider, is

supplied as stantard.

Содержание MAX-91SX-HRING C Spec PS VIPER

Страница 1: ...LE SERVO CARE AND MAINTENANCE EXPLODED VIEW PARTS LIST O S GENUINE PARTS ACCESSORIES THREE VIEW DRAWING MEMO 7 8 13 16 30 10 36 22 24 24 27 29 32 35 37 38 It is of vital importance before attempting t...

Страница 2: ...many other possibilities generally less obvious sources of danger but which under certain circumstances may also cause damage or injury 3 WARNINGS Never touch or allow any object to come into contact...

Страница 3: ...head down securely Take care that the glow plug clip or battery leads do not come into contact with rotating parts Adjust the throttle linkage so that the engine stops when the throttle stick and tri...

Страница 4: ...oove onto the connecting rod BDC position Rotate the crankshaft so that the connecting rod comes to this position 7 Note on installing the engine Note on heating the glow plug Cooling fan cover from s...

Страница 5: ...h torque type starter DO NOT however confuse tightness with the symptoms of hydraulic lock caused by an excess of fuel within the cylinder often the result of over priming Attempting to force the engi...

Страница 6: ...the under surfaces of the engine s mounting lugs are in contact with the engine mount 11 ABOUT THE PUMP SYSTEM Please understand the pump construction before piping Pump functions in accordance with t...

Страница 7: ...el in the pump Stop the fuel flow to the pump with the stopper and run the engine at idling to use out the fuel in the pump After stopping the engine rotate the engine by electric starter to eject fue...

Страница 8: ...1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

Страница 9: ...and connections carefully for any cracks on the tubes and loose connections as the engine runs ejecting excess fuel 17 4 Glowplug battery The power source for heating the glowplug may be either a lar...

Страница 10: ...is disconnected the heat retained within the combustion chamber remains sufficient to keep the plug filament glowing thereby continuing to keep the engine running Ignition timing is automatic under re...

Страница 11: ...Ixture Control Screw Lean With a model helicopter adjustments may vary due to various factors such as climatic conditions fuel muffler main rotor weight of the model gear ratio etc 89 degrees When the...

Страница 12: ...ating a dangerous situation 23 In case the engine does not stop Hold the rotor head and pinch the fuel line to stop the fuel supply If it still does not stop pull off the fuel line from the carburetor...

Страница 13: ...15 30 nitromethane Bear in mind that fuels containing relatively large percentages of power boosting nitromethane operate at richer mixture settings than are needed for mild fuels and will therefore r...

Страница 14: ...se at medium r p m e g hovering speeds is most important since this is a power range widely used in helicopter flight The optimum fuel air nixture strength at medium speeds is dependent on obtaining b...

Страница 15: ...mostly accumulate here SUBSEQUENT READJUSTMENTS Once the engine has been run in and the carburetor controls properly set up it should be unnecessary to alter the mixture settings except to make minor...

Страница 16: ...re Close the High Speed Needle Valve Turn clockwise Land the model Idle for approx 10 seconds then reopen throttle to observe transition Float the model Idling OK Lean mixture Rich mixture High Speed...

Страница 17: ...ide your refueling container will prevent the entry of foreign material into the fuel tank It is also recommended that a good in line filter be installed between the tank and carburetor 1 Finally inje...

Страница 18: ......

Страница 19: ...881810 27881800 27881820 45581820 29084100 27881330 27681340 27081900 27981910 24981837 46181940 46181941 26711305 46181950 Ratchet Spring Needle Needle Valve Assembly Fuel Inlet Rotor Guide Screw O R...

Страница 20: ...MP 10set Cap Screw Set M2 6x5 10pcs set 79871010 M3 5x10 79871070 7091 71530500 For 70SZ H 91SX H Needle Adjusting Screw 5pcs M2 6x5 41621100 37 THREE VIEW DRAWING Displacement Bore Stroke Practical R...

Страница 21: ...d in Japan TEL 06 6702 0225 FAX 06 6704 2722 6 15 3 Chome Imagawa Higashisumiyoshi ku Osaka 546 0003 Japan URL http www os engines co jp U N E Q U A LLEDQ U A LIT Y P R E C IS IO N P E R F O R M A N C...

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