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o.s. FS-48 -tj--/\;( 4-fj-~?}v.I/~/l&~IDtBJI~I

INSTRUCTIONS FOR O.S. FS-48 SURPASS FOUR STROKE CYCLE ENGINE

;:"0)t.:tf'td:, 0 S F S -48-ij--1 '{/Z ~ S!§t~'&> tf\ ,t.: t~~ &> f) tJ"C-)Z'~\';t90 ;:"O)I/:;/td:, os 4-ij--('7)[.,I/://0)1,f

tLtd~~ {£:~ tt~~', ~JTL,~'aif1-t0)@'tic L,-r, J±1~IJ8'9~1:J~~~ {£:~,;Z.::,tLt.::, i5i'I'iIlEI'{'77 )[.,I /:;> ("90 I-t: 0)1,fntdillg~7)[.,t=Z·)i5ffl ~'td~'<t.:/1)t=, *~~~J.li!H:W,=7tt=L,~tJ''::' TOS 4 -ij--('7 )[.,I /:/ / FS :/ I) - /Z·Ji)l.t},u~~J.I'*J:~ S~7Cl;.< t~'~ ~'0

7°D~77'0 ~ '71;:1:, #IH$- (:k ~ ~, 1i:!llL _lIDfJO ~fflJ£ (-m:1T~&)

~ I::'J:. 'J, ~~~ l::.i5effl~h tel: l"JiiJil: 0) {, 0) i~li' ~ (t hIt' ~ '\'Ji1tA-h", ;X0)*i$~I::'L.T<t5~po ~to', 7"1---71

:/ 1::.IH1 X 7 0) 7'0 ~ '7 ii5effl L.T < t5 t5Po

#IH$- 0) 5' -1 7'

10X8, 10X9, 10.5X810.5X9, 11X6, 11X7

@il'7'0~'7.l:1::.$3<:s'-1* ~ ;J: ~rnlfJt0)~1*

(K!>-:o < I) c L t:3!~1T ~ i3s'-1c L t:::.i5~~;J: c")

12 x 6, 12.5 x 6

e-m:~.5'-1~O)~~-~.~-eO)~~-~.,•••~~ 11X6, 11x7, 11><7.5

12X5, 12x6

BB:fi i § Ei"-J c L. t:::. ~ ~ - ~.

i t.:Lt~ 5':/ 1--*,*••

~*:f9 /?ff."-J200ccO)~*45' :/ 7 ii5effl L.T < t5 t5Po ff."-J125j-0)-m:1TiF"J

R~l"T0

=- 1")(;/\)(;7'

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~ El SPECIFICATIONS

hl,,1*~JII Displacement 7.89cc (0.481 cu.ln.)

* )7 Bore 23,Omm (0,906in,)

~ r- 0 - 7' Stroke 19,Omm (0,748in.)

~ ffll9l $,l; ~ Practical R,P,M, 2,200-12,000 r.p.rn.

:±l 1J Power output 0,8 BH P/12,000 r.p.rn.

~ It Weight4129 (14,50.z.)(-tJ1 v/-tJ-1t) (including silencer)

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; Detailed information on the operation and care of O.S. FS: Series engines will be found in the enclosed large fully-illustrated 4-page sheet entitled "INSTRUCTIONS FOR

'O.S. FS SERIES FOUR-STROKE-CYCLE ENGINES".

This smaller sheet is supplementary to the full instructionsi and is to advise you of the recommended propeller sizes,fuel tank size and needle-valve setting for the FS-48 Surpass

1 model only, together with specifications and part numbers.

IMPORTANT: Before attempting to operate your FS-48,please read through both instruction sheets and also paycareful attention to the "Safety Instructions and Warnings"leaflet also enclosed.

The FS-48 Surpass is one of a new generation of O.S. four-stroke engines that benefits from our unrivalled experiencein model four-stroke engine design and production, whichbegan with the O.S. FS-60, the engine that brought theadvantages of the four-stroke-cycle to the notice of themodel world and began the model four-stroke revolution.

- ._- ~-~.---~--.- -

PROPELLERThe choice of propeller depends on the size and weight ofthe model and on the type of flying envisaged. Determinethe best size after practical experiment, As starting points,suggested propellers are Iisted below,

For scale models of aircraft withlarge wing area and low wing loading

10x8,10x9,105,x8,10.5x9,11 x6or11 x7

12 x 6 or 12.5 x 6

For light-aircraft type models(sport, scale or trainer)

11 x6,11 x7,11 x7.5,12 x 5 or 12 x 6

For sport type aerobatic models

For running-in purposes, an 11 x 7 propeller will be suitable.

FUEL TANKA fuel tank of 200cc (6,8 oz.l capacity will run this enginefor approximately 12 minutes,

NEEDLE-VALVE OPENINGTurn the needle-valve 2 to 3 turns counter-clockwise fromthe fully closed position,

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~~a::IIlll ~ PARTS LIST

&1.;5::::J- '" " ;5 Description .!"Q;5::::J- '" " ;5 DescriptionCode No. QQ Code No. QQ

45581000 77/77-7.. Crankcase 45860000 1/T-7·/\)~7· -~ Intake Valve Assembly

45801100 1Ji->..1J/\- Cam Cover 45260010 I,\,-'J·-7..1- ·/\)~7· -~ Exhaust Valve Assembly

45802000 77/'7:""'\'71- Crankshaft 45261010 r::J.;;1J-.)7-i->. -~ Rocker Arm Assembly

45803100 :" I) / -:t- . 7 1 j- - Cylinder Liner 45261400 r::J.;;1J- • -tj"*'- I- -~ Rocker Support Assembly

45803200 ~7..I-/ Piston 45262010 1Ji->.:,,"'\'7 I- Camshaft

45803400 ~7..I-/.I) :--7' Piston Ring 45664000 1Ji->.7;tr::J7 Cam Follower

45804000 :"1) /-:t-. ".;; ". (I\)~7'it) Cylinder Head (w/Valve Ass'y) 45866000 -.f;; :" ~ • (J .;; ". Push Rod

45804100 :" I) / -:t- . ".;; ". Cylinder Head 45866100 7'.;;:"~. (J.;; " .. 1J/\- -~ Push Rod Cover Assembly

45204210 (J';;1J- .1J/\- Rocker Cover 45869000 1/T-7· '7_*-)~".-~ Intake Pipe Assembly

45205000 ::::J/r::J.;;f" Connecting Rod 22681953 7'1) --if'. -';; 7' )H'7';;:,,"'\'it) Breather Nipple (w/Washer)

45806000 ~7..I-/.~/ Piston Pin 71615009 7r::J-· 7'7 7 (:$I17'F) Glow Plug Type "F"

45807000 1J/\-·7'v-1- Cover Plate 45881000 '\'-"'\'7' t> :$I- • 7..r::J.;; I-)~ Carburettor Complete

45808000 "'717'· '7';;:""'\' (=\'--it) Drive Washer (wi Key) 45825010 -tj"1v/-tj"-*i;$: Silencer

23209003 7'(J~7·'7·;;:""'\' Propeller Washer 45226000 I,\,-j-7..I-· '7_*-}~"'-~ Exhaust Header Pipe Assembly

23210007 7'(J~7· T';; l- i 1 Propeller Nut 45884000 T:3-7'1\)~7' -~II Choke Valve Assembly

45813000 7..7 I) ~ - • t·;; l- i Screw Set *72200060 :$I~';;l-aJlJ~'\'-';;1- I Valve Adjusting Kit

45814100 />» ,,'. "ji"7..7·;; l- I Head Gasket *71913000 7:;"7)~· '7'7/ I- • it-;; I- Radial Motor Mount

26531005 '77/'7:" to7 I- • -,,")71):-1 (ijIi) Crankshaft Ball Bearing (Front) *45262091 ~'i1Ji->.:""'\'71- I Reverse-rotation Camshaft

27330000 '77 :-?:"to 7 1-. -"")7 I):-? (i~) Crankshaft Ball Bearing (Rear) *23024008 7..1::"/j--.j-.;;1- I Spinner Nut

45231100 1Ji: :,,"'\'7 I- • «7 I) / 7' I Camshaft Ball Bearing Ip

The specifications are subject to alteratibn for improvement without notice.I

O.S.I/~/I

11\ JII ~ ~ ** ~ ~ *±,=546 *~&rti:\HtslR~)l13T§ 6.15-%

11Ui51 (06) 702- 022 5. (it)

as.EN6INE51'FG. CD..LTD.6-15 3-chome Imagawa Hiqastusurnivoshi-ku

)Osaka 546. Japan. TE L. Osaka (06)702-0225

© Copyright 1987 by 0.5. Engines Mfg. Co., Ltd.All rights reserved. Printed in Japan

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