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Saito FA-120 Special Instruction Manual

Other manuals for FA-120 Special: Instruction Manual, Instruction Manual, Instruction Manual
Manual is about: SINGLE-CYLINDER 4-STROKE ENGINES

Summary of FA-120 Special

  • Page 1

    S ingle -c ylinder 4-s troke e ngines version 2000 instruction manual • fa-30s (h) • fa-30s golden knight • fa-50 • fa-50 golden knight • fa-56 • fa-56 golden knight • fa-65 • fa-65 golden knight • fa-72 • fa-72 golden knight • fa-80 • fa-80 golden knight • fa-91 special • fa-91s golden knight • fa-...

  • Page 2

    Very important failure to read and follow these instructions before you proceed to start your engine may result in engine damage and the voiding of your warranty. Saito single cyl manual 9-00 9/11/00 10:06 am page 2.

  • Page 3

    Introduction congratulations on purchasing a saito 4-cycle engine. When cared for properly, these high-quality, finely crafted engines offer many years of modeling enjoyment. This instruction manual has been developed to ensure optimum performance from the saito engine you have purchased. The instru...

  • Page 4

    Do not use hands, fingers, or any other part of the body to stop the propeller. Do not throw any object into a propeller to stop it. It is highly recommended that: • safety glasses or goggles be used when starting and running your engine. • you do not run the engine in the vicinity of loose gravel o...

  • Page 5

    Engine parts identification it is important to be able to identify the parts of your saito engines. Attached you will find an exploded view of a saito 4-stroke engine, as well as charts that include part numbers and descriptions. This will assist you in easily and rapidly identifying the respective ...

  • Page 6

    Break-in the first run on any engine, whether 2-cycle or 4-cycle, is critical to the future of the engine itself. During this time, metal mating parts (piston and cylinder, ball bearings, etc.) wear in. Care must be taken that the engine is clean and free of any dust or grit that may have accumulate...

  • Page 7: 5.  Fill The Fuel Tank.

    Starting the engine 1. Make sure the glow plug(s) is/are installed and tightened. 2. Be sure the propeller is properly secured. The use of an anti-loosening nut, or “jam nut,” is encouraged on 4-cycle engines. 3. Make sure that the fuel tank line(s) are properly connected. The fuel pickup line shoul...

  • Page 8: 8.  Initial Break-In:

    • connect the heating source to the glow plug. • using either the “chicken stick” or electric starter, spin the propeller until the engine is running. Note: a very common error is to remove the glow plug igniter too early. It is suggested that the igniter be left attached until after the engine has ...

  • Page 9

    2. Close the throttle slowly and adjust the low speed setting by rotating the idle needle valve (89) clockwise to lean the mixture and counterclockwise to richen the mixture. Note: the fuel mixture is too rich if when openning the throttle rapidly the engine emits white smoke and “stutters” or “stum...

  • Page 10

    3. After obtaining the proper idle setting, the low rpm setting may be made through the positioning of the throttle adjustment screw, if applicable. If not, adjust the idle setting via the throttle trim of your transmitter. Normal engine operation if break-in was accomplished on a test bench your en...

  • Page 11: Any Questions Concerning

    3. Reassemble the piston, rod, rocker arm, pins, pushrod, tappet, etc., in their original positions. Engine parts are mated after running the engine and they must be reassembled as close as possible to their original position. 4. Assemble the engine, reversing the criss-cross pattern used in the dis...

  • Page 12: .80 Engines Only.

    10 c a r b u r e t o r m a i n t e n a n ce carburetor maintenance should you experience difficulty with the carburetor of your engine: 1. Check the position of the idle needle valve (89) by fully opening the throttle barrel (87). Look down through the barrel and check the space between the idle nee...

  • Page 13

    T r o u b l e s h o o t i n g 1 1 troubleshooting generally speaking, there are very few things that will keep today’s modern glow engines from starting. To that end, make sure you’re using good quality “fresh” fuel, there are good glow plugs installed, and the starting battery is charged and in goo...

  • Page 14: Engine Fails to

    12 t r o u b l e s h o o t i n g symptom cause corrective action engine fails to low voltage on replace/recharge the start starting battery starting battery bad glow plug(s) inspect/replace bad glow plug insufficient priming repeat priming procedure “flooded” due to disconnect battery, remove the ex...

  • Page 15

    P a r t s l i s t 1 3 small single-cylinder cross-reference chart part nn mm e f ii jj rr ss fa-30s-gk fa30-s (h) fa-50 fa-50gk fa-56 fa-56gk fa-72 fa-72gk 01 cylinder, left 30s01 30sh01 5001b 50gk01b 5601b 56gk01b 8001c 80gk01c 06 piston 30s06 30s06 5006 5006 5606 5606 8006a 8006a 07 piston pin 30s...

  • Page 16

    1 4 p a r t s l i s t medium single-cylinder cross-reference chart part g h i j k ee fa-65 fa-65gk fa-80 fa-80gk fa-91s fa-91sgk 01 cylinder, left 6501c 65gk01c 8001c 80gk01c 91s01a 91sgk01a 06 piston 6506a 6506a 8006a 8006a 91s06 91s06 07 piston pin 6507 6507 8007 8007 91s07 91s07 08 piston pin ret...

  • Page 17

    Large single-cylinder cross-reference chart p a r t s l i s t 1 5 part m ff cc gg oo pp fa-120sh fa-120sgk fa-150 fa-150gk fa180 fa-180gk 01 cylinder, left 120s01a 120sgk01a 15001 150s01 18001 180gk01 06 piston 120s06 120s06 150s06 150s06 18006 18006 07 piston pin 120s07 120s07 120s07 120s07 18007 1...

  • Page 18

    1 6 p r o p e l l e r s e l e c t i o n propeller selection in the chart below you will find a propeller selection list. This chart will enable you to select the best propeller for initial setup of your saito engine. Remember, it is imperative to balance each propeller prior to installation onto you...

  • Page 19

    I figure 6 figure 7 figure 8 outside dimensions (mm) items a b b1 b2 c1 c2 d e f g h i fa-30s (h)/30s gk 36 14 — — 88 110 43 87 47 29 33 72 fa-50/fa-50gk 46 15 — — 103 130 54 102 59 32 52 84 fa-56/fa-56gk 46 15 — — 103 130 54 102 59 32 52 84 fa-65/fa-65gk 50 21 — — 113 144 60 113 66 40 55 93 fa-72/f...

  • Page 20

    No. Description qty. 01 cylinder (left) 1 06 piston 1 07 piston pin 1 08 piston pin retainer 2 09 piston ring 1 10 connecting rod 1 14 cylinder screw set 1 set 15 crankcase 1 17 rear cover 1 19 breather nipple 1 20 front bearing 1 22 rear bearing 1 23 crankshaft 1 24 pinion (crankshaft) 1 25 pinion ...

  • Page 21: Not Cover:

    Saito engines are guaranteed against workmanship and manufacturing defects for a period of 3 years from the original date of purchase. This warranty is limited to the original purchaser of the engine and is not transferable. Warranty repairs will not cover: • normal engine wear • damage due to insuf...

  • Page 22

    20 w a r r a n t y & r e p a i r s warranty repairs to receive warranty service, you must include your original dated sales receipt to verify your proof-of- purchase date. Providing that warranty conditions have been met, your engine will be repaired without charge. Non-warranty repairs should your ...

  • Page 23

    Saito single cyl manual 9-00 9/11/00 10:07 am page 23.

  • Page 24

    Exclusively distributed by horizon hobby, inc., champaign, il 61822 www.Horizonhobby.Com © copyright, 2000 stock #saiman1 updated 9-7-2000 sai.99.36 saito single cyl manual 9-00 9/11/00 10:07 am page 24.