O.S. engine GT55 Owner'S Instruction Manual Download Page 16 | Manualshive

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30

Type of screw

N...Round Head Screw

CARBURETOR EXPLODED VIEW

10

1

N4-40x5

2

3

4

5

6

7

8

9

9-1

11

12

13

4-4x40

12

4-40x4

12

4-4x40

14

15

16

17

18

19

20

19-1

N4-40x5

21

22

23

24

25

24-1

24-2

24-3

24-4

24-5

24-6

26

27

28

31

The specifications are subject to alteration for improvement without notice.

CARBURETOR PARTS LIST

1
2
3
4
5
6
7
8
9

9-1

10
11
12
13
14
15
16
17
18
19

19-1

29781340
29781330
29781460
29781450
29781430
29781440
29781410
29781420
29781360
29781350
29781310
29781320
29781570
29781550
29781510
29781560
29781520
29781530
29781540
29781370
29781350

Description

Code No.

No.

Spring-Choke Friction
Ball
Plug-Friction
Screw-Idle Speed
Needle-High Speed
Spring-Needle (H) ADJ.
Needle-Idle
Spring-Needle ADJ.
Choke Arm Assy
N4-40x5 Retaining Screw
Shaft-Choke
Valve-Choke
4-40x4 Retaining Screw
Lever-Outer
Shaft-Throttle
Ring-Retaining
Valve-Throttle
Spring-Throttle Return
Link-Throttle
Throttle Arm Assy
N4-40x5 Retaining Screw

20
21
22
23
24

24-1
24-2
24-3
24-4
24-5
24-6

25
26
27
28

29781020
29781030
29781040
29781050
29781270
29781060
29781210
29781220
29781230
29781240
29781250
29781120
29781130
29781140
29781070

Description

Code No.

No.

Gasket Passage
Plate-Passage
Gasket-Pump
Diaphragm-Pump
Body Assembly Pump
Screen-Inlet
Spring-Metering
Valve Inlet Needle
Pin-Metering Lever
Lever-Metering
Screw-Metering
Gasket-Metering Diaphragm
Diaphragm Assembly-Metering
Cover Assembly-Metering (W/Nipple)
Carb. Assemble Screw

«
...
14
15
16
17
18
»

Summary of Contents for GT55

Page 1: ...ou may readily refer to them whenever necessary It is suggested that any instructions supplied with the aircraft radio control equipment etc are accessible for checking at the same time Two stroke gasoline engine for airplanes 1 SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O S ENGINE ABOUT THE ENGINE ENGINE PARTS NAME SILENCER INSTALLATION FUEL TANK LINES CARBURETOR WLA 2 PARTS NAME CARBURETOR LINK...

Page 2: ...lse to smoke near to it Carry out the mixing of the gasoline and oil outdoors or in a well ventilated place away from any source of fire to prevent the possibility of a fire Refill the fuel tank only after the engine is well cooled down or there is a danger of fire 3 WARNINGS Model engines generates considerable heat Do not touch any part of your engine until it has cooled Contact with the muffler...

Page 3: ... loose objects such as pencils screwdrivers etc in a shirt pocket from where they could fall through the propeller arc Use an electric starter for this engine The wearing of safety glasses is also strongly recommended If you try hand starting be sure to use a chicken stick or heavy glove Never attempt to start the engine with a bare hand Be sure to carry out adjustments of the high speed needle an...

Page 4: ...attery voltage drops It provide high voltage for sure firing through the operating range while utilizing a low current draw STANDARD ACCESSORIES Spark Plug CM 6 入力電圧消費電流出力電圧 Input voltage Consumption current Output voltage DC 4 8V 7 6V 600mA 6000rpm 4 8V 20KV 6000rpm 4 8V Exhaust Gasket GT55 Ignition module Assembly IG 01 7 Propeller Retaining Screws ENGINE PARTS NAME Spark Plug Cylinder Head Cr...

Page 5: ...ngine cooling to avoid overheating Pay careful attention to the cooling since a gasoline engine generates more heat than a glow engine Secure at least a 30mm dia area around the air intake of the velocity stack so that the air intake will not be restricted Cut out the cowling big enough if necessary 9 Use a tank designed for gasoline Tanks designed for glow fuel use a rubber cap which is deteriora...

Page 6: ... retaining screw Pay attention not to lose this screw because it is special size At this time be careful not to remove the high speed stop lever Then install the throttle lever with the throttle lever retaining screw Then install the idle speed stop lever with the high speed stop lever retaining screw Connect the throttle linkage so that the engine can be stopped via radio operation Connect the th...

Page 7: ...t tubing to the inside of the fuselage 13 Consumption current is 600mA 6 000rpm User a power source of more than 1000mA h capacity For safety with this ignition module the engine runs intermittently over 5 000rpm when the power source voltage drops below 3 8V With this intermittent running rpm do not increase the rpm above mid speed and land the model immediately The ignition module is set not to ...

Page 8: ...e possibility of flying apart due to strong centrifugal force caused by high rpm Discard any propeller which has become split cracked nicked or otherwise rendered unsafe Never attempt to repair such a propeller destroy it Do not modify a propeller in any way PROPELLER Use a wooden or a carbon fiber propeller Do not use a nylon propeller The choice of propeller depends on the design and weight of t...

Page 9: ...l If there is no recommendation mix with a 30 1 ratio We have checked and approved the following oil mixture ratio KLOTZ ModelLube 50 1 COSMO Cosmo Terra 2 cycle 50 1 RED LINE Two Stroke Racing Oil 40 1 This does not mean we guarantee the quality of these oils Follow the instructions in the running in section concerning the mixture for running in With a gasoline engine passages in the carburetor a...

Page 10: ...g loose gravel or sand The propeller may throw such material in your face and eyes and cause injury WARNING When ground running the engine avoid dusty or sandy locations If dust or grit is drawn into the engine this can have a ruinous effect drastically shortening engine life in a matter of minutes 19 1 2 3 4 5 6 7 8 9 When starting the engine for the first time set both the high speed needle and ...

Page 11: ...on the transmitter 1 2 3 21 1 2 3 4 5 4 5 6 7 8 9 1 2 3 Make sure the ignition switch is off Close the choke valve fully Fully advance the throttle stick on the transmitter Flip a propeller 2 3 times 3 4 times in winter In case of upright and side installation flip 3 4 times Open the choke valve fully Flip the propeller 6 7 times to draw the mixture into the cylinder with the throttle stick fully ...

Page 12: ...at the procedure over priming is suspected Check whether the plug is wet or not If the plug is wet replace it or wait until it is dried Then flip the propeller swiftly 15 20 times with the plug removed to eject the fuel in the cylinder Then install the plug and repeat the starting procedure 23 1 2 4 5 6 7 8 3 Set the throttle stick at bottom or 1 8 2 3 clicks advanced from the bottom Make sure the...

Page 13: ...gine does not respond sluggishly to increase rpm nor hesitates before picking up speed or even ceases firing If the engine responds sluggishly to increase rpm the mixture is too rich due to the slow speed needle being open too far Close the slow speed needle approx 15 degrees Repeat this procedure until the engine accelerates smoothly Be sure to adjust the slow speed needle only after stopping the...

Page 14: ...erheating symptoms were not observed during the former flight In this case leave it until the engine is fully cooled down in hot weather it may take more than one hour or run the engine for 4 to 5 minutes at idling 1 2 3 4 27 Fill the carburetor with fuel at the conclusion of a day s flying Pay careful attention to fire and ignition source when carrying and storing the model If the engine is store...

Page 15: ...3 4 5 6 7 8 9 10 11 12 12 1 13 14 15 15 1 15 2 16 17 18 18 1 19 20 21 22 29704000 29714100 29703100 29703400 29703200 29706000 29717000 29705000 29781300 29781000 29781110 29781500 29701200 29701210 29709000 29702100 29708000 29708100 29708200 29730000 29701000 29701300 29701310 29731000 29702000 29714200 29707000 74002000 74002200 71669000 29714300 Description Code No No Cylinder Head Head Gasket...

Page 16: ... Plug Friction Screw Idle Speed Needle High Speed Spring Needle H ADJ Needle Idle Spring Needle ADJ Choke Arm Assy N4 40x5 Retaining Screw Shaft Choke Valve Choke 4 40x4 Retaining Screw Lever Outer Shaft Throttle Ring Retaining Valve Throttle Spring Throttle Return Link Throttle Throttle Arm Assy N4 40x5 Retaining Screw 20 21 22 23 24 24 1 24 2 24 3 24 4 24 5 24 6 25 26 27 28 29781020 29781030 297...

Page 17: ...r M5 Stand Off Engine Mount 1 1 4 31 8mm 4pcs Hex Socket Head Bolt M5x15 10pcs sets Hex Socket Head Bolt M5x25 10pcs sets Lock Washer M5 10sets Propeller Washer M5 Stand Off Engine Mount 1 1 2 38 1mm 4pcs Hex Socket Head Bolt M5x15 10pcs sets Hex Socket Head Bolt M5x25 10pcs sets Lock Washer M5 10sets Propeller Washer M5 Stand Off Engine Mount 1 3 4 44 5mm 4pcs Hex Socket Head Bolt M5x15 10pcs set...

Page 18: ...utput Weight Engine Ignition Module 54 93 cc 3 352 cu in 41 2 mm 1 62 in 41 2 mm 1 62 in 1 500 8 000 r p m 5 5 ps 5 58 hp 7 000r p m 1580 g 55 7 oz 140 g 4 94 oz 60092290 061106 C Copyright 2009 by O S Engines Mfg Co Ltd All rights reserved Printed 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 ...

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