O.S. engine MAX-91FX Owner'S Instruction Manual Download | Manualshive

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EXPLODED VIEW (91FX

RING

)

✽

Type of screw

C

…

Cap Screw F

…

Flat Head Screw N

…

Round Head Screw S

…

Set Screw

C.M3

✕

15

y

y

2

3

4

7

r

6

5

8

-1

8

-2

8

N.M3.5

✕

6

q

=

-

9

0

0

-1

e

t

-10

t

-1

t

-8

t

-5

t

-2

t

-3

t

-4

t

-7

t

t

-9

C.M3.5

✕

10

S.M3

✕

3

t

-6

w

32

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Summary of Contents for MAX-91FX

Page 1: ...ntained therein Also please study the entire contents of this instruction manual so as to familiarize yourself with the controls and other features of the engine Keep these instructions in a safe plac...

Page 2: ...TING RUNNING IN Breaking in IDLING ADJUSTMENT CHART MIXTURE CONTROL VALVE ADJUSTMENT REALIGNMENT OF MIXTURE CONTROL VALVE SUBSEQUENT STARTING PROCEDURE SUBSEQUENT READJUSTMENT CARBURETOR CLEANLINESS E...

Page 3: ...would respectfully request that these instructions are also passed on to its new owner SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O S ENGINE The advice which follows is grouped under two headings ac...

Page 4: ...head or exhaust header pipe in particular may result in a serious burn Never touch or allow any object to come into contact with the rotating propeller and do not crouch over the engine when it is run...

Page 5: ...ring Such noise is also likely to cause annoyance to others over a wide area Install a top quality propeller of the diameter and pitch specified for the engine and aircraft Locate the propeller on the...

Page 6: ...wearing of safety glasses is also strongly recommended Discard any propeller which has become split cracked nicked or otherwise rendered unsafe Never attempt to repair such a propeller destroy it Do n...

Page 7: ...sand The propeller may throw such material in your face and eyes and cause injury For their safety keep all onlookers especially small children well back at least 20 feet or 6 meters when preparing yo...

Page 8: ...with washer fingertight only before final tightening with the correct size plug wrench BEFORE INSTALLING THE ENGINE Installing the glowplug Connect the short length of fuel tubing supplied securely b...

Page 9: ...sion enables adjustments to be made without risk of burning one s fingers on the cylinder head NEEDLE VALVE LOCATION BASIC ENGINE PARTS Cylinder head Carburetor Silicone Tube Crankshaft Propeller nut...

Page 10: ...lder Fuel Inlet Needle Valve Assembly 45mm Fuel Inlet Needle Valve Assembly Plug Screw 50SX 91FX Fuel Inlet Needle Valve Assembly Needle Extension 45mm 61FX 50SX 91FX Use hexagon head brass inlet hold...

Page 11: ...irst nut Tighten this nut first Steel washer 3 4mm steel screw Spring washer or lock washer Hardwood such as cherry or maple Spring washer 3 5mm steel Allen screw 3 4mm steel nuts Use mounting screws...

Page 12: ...wiring etc when the throttle is fully open or fully closed Set the throttle lever linkage so that the throttle ro tor is a fully open when the transmitter throttle stick is fully advanced and b fully...

Page 13: ...he vent pipe of the fuel tank Suggested Fuel Tank Capacities 50SX 40 46FX approx 300cc approx 350cc approx 450cc 61FX 91FX FUEL TANK LOCATION Attention to tank height Fuel level 10mm Model engines gen...

Page 14: ...hile adjusting the needle However plug life can be extended and engine performance maintained by careful use i e Apart from when actually burned out a plug may need to be replaced because it no longer...

Page 15: ...r to it Select by practical tests the most suitable fuel from among the best quality fuels available in your country for model use For the best performance a fuel containing 5 to 20 nitromethane is pr...

Page 16: ...stablishes the basic fuel air mixture strength The correct mixture is then maintained by the carburetor s built in automatic mixture control system to cover the engine s requirements at reduced thrott...

Page 17: ...o reduce brightness Warning Very hot Never touch the nichrome wire while the battery is connected 1 5 volt heavy duty dry battery or 2 volt rechargeable lead acid cell at least 5Ah If a 2 volt cell is...

Page 18: ...r Fit a filter to the outlet tube of your refuelling container to prevent entry of foreign matter into the fuel tank Fuel Can Filter 10 Silicone tubing This is required for the connection between the...

Page 19: ...ERY IMPORTANT Before being operated at full power i e at full throttle and with the needle valve closed to its optimum setting the engine must be adequately run in otherwise there is a danger of it be...

Page 20: ...here the en gine does not stop Run the engine for one minute with the throttle fully open but with the needle valve adjusted for rich slow four cycle operation 1 Now close the needle valve until the e...

Page 21: ...the needle valve about 30 and restart As the needle valve is closed slowly and gradually the engine r p m will increase and a continuous high pitched exhaust note only will be heard Close the needle v...

Page 22: ...e Maximum rpm setting Lean STARTING Rich needle valve setting when starting the engine The engine may stop if the battery leads are disconnected from the glowplug while the engine is running rich Engi...

Page 23: ...ds Does the engine stop Apply full throttle Does the engine regain full power immediately OK Refer to the next section Re set the idling position at a little higher r p m Set the throttle opening by m...

Page 24: ...ure Control Screw counter clockwise 90 to positively enrich the idle mixture then turn the screw clockwise gradually until the engine regains full power cleanly when the throttle is reopened Carry out...

Page 25: ...ng Once the engine has been run in and the controls properly set up it should be unnecessary to alter the mixture settings except to make minor adjustments to the Needle Valve occasionally to take acc...

Page 26: ...inside the carburettor to deteriorate These procedures will reduce the risk of starting difficulties and of internal corrosion after a period of storage The correct functioning of the carburetor depen...

Page 27: ...e w q 0 7 6 5 4 3 2 1 C M3 15 C M2 6 18 i u C M3 8 S M3 3 9 8 q 1 i 1 i 2 i 3 i 4 i 5 i 6 i 7 i 8 i 9 i 10 o Type of screw C Cap Screw F Flat Head Screw N Round Head Screw S Set Screw EXPLODED VIEW 50...

Page 28: ...rew Pressure Fitting 873 Silencer Assembly Glow Plug No 8 Screw Set Needle Valve Holder Assembly Set Screw O Ring Needle Plug Screw Fuel Inlet Fuel Outlet Ratchet Spring Cover Plate Body Cover Plate A...

Page 29: ...0 9 8 7 5 4 3 2 1 6 6 2 6 1 q t e w r 7 r 6 r 5 r 4 r 3 r 2 r 1 r C M3X15 N M3 5X6 S M3X3 C M3X8 Type of screw C Cap Screw F Flat Head Screw N Round Head Screw S Set Screw EXPLODED VIEW 40 46FX 28...

Page 30: ...5000 25081700 23210007 23209003 25608000 46120000 26731002 25601100 26730005 25602020 25614010 25607000 25607100 22681953 22681980 24981837 26381501 27381940 26711305 25613000 25425000 22681957 254253...

Page 31: ...D VIEW 61FX Type of screw C Cap Screw F Flat Head Screw N Round Head Screw S Set Screw C M3 15 1 e t 2 4 3 5 6 1 6 2 6 7 w 8 9 0 q N M3 5 6 r 1 r 5 r 3 r 4 r 2 r 10 r 11 r 6 r 7 r 8 C M3 8 C M3 5 8 r...

Page 32: ...305 27913000 71608001 26028000 22681953 26028100 26625210 Retaining Screw 2pcs Assembly Screw Pressure Fitting E 4010 Silencer Glow Plug No 8 Screw Set Needle Valve Holder Assembly Set Screw O Ring Ne...

Page 33: ...IEW 91FXRING Type of screw C Cap Screw F Flat Head Screw N Round Head Screw S Set Screw C M3 15 y y 2 3 4 7 r 6 5 8 1 8 2 8 N M3 5 6 q 9 0 0 1 e t 10 t 1 t 8 t 5 t 2 t 3 t 4 t 7 t t 9 C M3 5 10 S M3 3...

Page 34: ...bly Screw Pressure Fitting E 4020 Silencer Assembly Glow Plug No 8 Screw Set Needle Valve Holder Assembly Set Screw O Ring Needle Plug Screw Fuel Inlet Fuel Outlet Ratchet Spring Cover Plate Body Cove...

Page 35: ...7783600 22781800 25681200 26781506 25681100 25681620 22681953 46215000 25081700 CARBURETOR 60C 61FX 22781401 22781411 22781420 27783600 22781800 27783200 26781506 27783100 25681620 22681953 46215000 2...

Page 36: ...ing S Carburettor Body Rotor Guide Screw Fuel Inlet W Washer Carburetor Gasket Carburetor Retaining Screw 2pcs No Code No 27881400 29581200 45582300 46066319 24881824 29581100 45581820 22681953 290150...

Page 37: ...E 4020 Length 35mm 61FX E 4010 91FX E 4020 A3 71605300 O S GLOW PLUGS O S GENUINE PARTS ACCESSORIES SPINNER NUT 23024009 45024000 1 4 28 L 5 16 24 50SX 40 46FX 61FX 91FX Code No Size Type of Engine LO...

Page 38: ...61FX 91FX 25425020 26028010 873S E 4010S 50SX 40 46FX 61FX For 61FX EXHAUST HEADER PIPE Code No Size Type of Engine SUPER SILENCERS Code No Size Type of Engine Code No Type of Engine O S SILICONE TUBE...

Page 39: ...e Practical R P M Power output Weight 8 17 cc 0 499 cu in 22 0mm 0 866 in 21 5mm 0 847 in 2 000 20 000 r p m 1 8 bhp 17 000 r p m 390g 13 76 oz SPECIFICATIONS Dimensions mm UNF1 4 28 52 36 44 17 5 60...

Page 40: ...0 395 cu in 20 5mm 0 807 in 19 6mm 0 772 in 2 000 17 000 r p m 1 36 bhp 16 000 r p m 386g 13 6 oz SPECIFICATIONS Displacement Bore Stroke Practical R P M Power output Weight 7 45 cc 0 455 cu in 22 0m...

Page 41: ...9 1 43 79 100 5 4 2 42 25 4 2 52 Displacement Bore Stroke Practical R P M Power output Weight 9 95 cc 0 607 cu in 24 0mm 0 945 in 22 0mm 0 866 in 2 000 17 000 r p m 1 9 bhp 16 000 r p m 550g 19 42 oz...

Page 42: ...Bore Stroke Practical R P M Power output Weight 14 95 cc 0 912 cu in 27 7mm 1 091 in 24 8mm 0 976 in 2 000 16 000 r p m 2 8 bhp 15 000 r p m 550g 19 42 oz SPECIFICATIONS 41 4 4 2 66 5 29 5 UNF5 16 24...

Page 43: ...served Printed in Japan 110101 TEL 06 6702 0225 FAX 06 6704 2722 6 15 3 Chome Imagawa Higashisumiyoshi ku Osaka 546 0003 Japan U N E Q U A LLED QUALITY PRECISION PERFOR M A N C E E S T A BLISHING THE...

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