Honda C70 Manual

							 
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 r'*~

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fl.
 -fig’

CH]
 CYLINDER
HEAD.-VALVE

IIYLIIIIJEII
 IIHII
IIISTILLIITIUII
 eewei
Pies

lngtgil
 is
nnw
 E'fI'IfllIIEF
 heed
geeiret
 end
new
 nil
 \
 I’
t

uaesage
 D-rinpe
 .1»

\%\\\\-

F1
 -
T-In

092';

I

GASKET
 BRINGS

CAP

Install
 the
evllritier
 heed.

install
 the
cylinder
 heed
ttlvet
 WI1-‘ll
Th!
WOW
 ft"-1i"iJ

down
 IEIII
!ti!IE'i.

NOTE
 .
' 

Be
 e-ure
 to
inst-lii
 'I.I"iIi
sea-'l|il1§
 Il’l'i5Il|"-
 MP9”

WM]-H.-I
 tap
"U5
 |u'|-Q]
nut
nn
the
 cylinder
 hllfl

I
 i=e'r'£5e.=.I1?1"-
 _

Tighten
 the
nuts.

TDFICIUE:
 0.9-1.2
irp-In
iT—E
ft-Hal

Tighten
 tha
t;'gt|i|rlI.:i|:r
 and
head
 El
mm
 bolti-

WASHEFI
NUT
HEAD
E-mm
BDLT
 i3\I'Lll‘~iflEFi

Bmm
 BOLT

INDEX
 MARK

Turn
 the
trrehllul-utt
 eounterclucitwise
 ant!
align
 the

"T"
 and
lnde:-t
 marks.

Lumen
 Ih|t;|
mam
 ti"n'|i|1
 [E‘I"I11I‘.I-I'll!
 innit
H.111
and

adiusting
 butt.

em
 tri
irsue:
 May.
ieee
 55'
 6-13

1111:-|C|r-me.
 MCITDH
ce,
tre.  
						

							 
BY’

L
I
ND
 E
R H
EADIVALVE
 HONDA

cm
 a%;,»%

-..b_

Pllwr:
 rhu
I:-am
 chain
 over
mg
carruhaf:
 1prqq;|r,g1,

aligning
 the
fiprnnknt
 n-rruqrk
with
1|-19
gylindgr
 |-mad

Index
 mark.

Install
 lhl
namihaft
 lprnckei
an
mu
 qmmafi:
 ind

tiqhtan
 ma
spruclr.-a1
 l,1ul1s._

TEIHDUE:
 :15-0.9
am
11-1n~|u}

|l1P-tflll
 I-Hi!
tvllnchr
 hind
lufi
ii-da
 cmral
 aligning
 th:

T-lng
 with
 tha
uvlindar
 hand
nut-uh.

111:-tall
 the
mufiier.

1I=lH||
 thu
spark
 plug
cap.

Connect
 the
lntaka
 pipq,

-filillult
 H19
vmlvfl
 CH-1rinl:1:
 Ipqu
3-Bi.

I .

In-ital
 the
1:I:rr'r€a|::t
 |:Iu-|nt
towr.
 ___‘

-Rxlluxit
 the
cam
 chain
 tanalun
 1p1u_:|¢
3'-B},

lrmrall
 thu
final.
 cuwr.
 INDEX

MARK
 "D"
MARK

TANG

6-1
 4
 To
Date
1:‘!
|!zn.l:‘
 Hay,
IQHD

@HDHD-5|
 MUTDH
C11.
LTD.

In
 __\

.--1
 1

I.»-'--.

..-_-\-_

I2-\-.

,_  
						

							 
/’

HONDA

~-
 _
mu

,_

3’?
 -

'-I-\.

I

,1‘-'\-.

Ir.-\-

If-_-\-

.--.,_

|

.'I_‘
 M-EMU

[I353
 Q‘?
|5iUqI
 Muqr,
'|QHD

@1‘|UHDP|.
 MUTUR
CU,
LT
D.
 Tl  
						

							 
A

I
_

p

___
___
 _|

I“?

xi

jfilk

_H__H____?____H_‘

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F
 _

__

_|)_h_x__
 if

T,“
 ____H|HW\__‘

EH

Nm

:_%l_%
 Fm"
Jig

3“

B
L___
 ___;

_

_
 _i___‘\\_______’__
 _|

1

rd“

I

F

_
__
 IIIIII

\_

IIHHIII

-_
 __

_
 _
 _

_

_
 I

_
 if

f__

If

____

____

ll

_

_
 ___‘

I-_
 _

_
 ___
5

_

_
 |

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____

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 _

L

TWIHHIL

I

I

Y

C
 _

______|__|_____

hp.
 __

Q

ii
 _

__

A

_

_
 m__

H

_]_____J__h____
_|___m::©

Mm

W

_
 E

W

Q
 Q

Q

A
A

A

1
 fix
_
 Q

M
 A

mm

mm

mg

D

T

L

wm  
						

							 
ll’.

-I

fr"-.
 .

‘

IF-
 IF.

4""

F/_*.

F-

F
 1"“
 Kéyll:-1::E1?=I|rT]n1=|..

7.
CYLINDER
 PISTON

SE
 FIVI
 GE
 IN
FD
 H
HATI
 D-N

TFICILIEILESHDDTING

CYLINDER
 HEMDVAL
 7-1

PISTON
HEIVIDVAL
 7-3

7-‘I
 PISTON
INSTALLATICIIII
 7-6

T--I
 CYLINDER
 INSTALLATION
 'i"—B

SERVIBE
 IIIFIIIIIIIITIIIII

GENERAL
 INSTRUCTIONS

u
 C\rIindnr_-‘|,1i:.tnn
 malnivananua
and
lnsn-action
 can
be
purfm-ned
 with
tha
anaim
 inita!Iu=I-

-I
 Canuhaft
 and
rnckar
 arm
lubricating
 n|'|
I:
IBIII
 lI‘|fflHI;I'I1
 t-‘I-‘II
HIIIF
 UII
Flliiiflifil
 3'9
‘I-"E
 Th?
955533"
 5""
""'-IT
 ¢"'3'9!"'-I-

s"r:-mn
 mo

-11.005
 --
-u.u1s
 mm
_1_;.a5qa_i:a51u
 I":

SPECIFICATIONS

"E1

I.D'.

U
 I*I.1;:n
 rinq-to-ring
 TOP
I

|;lIl1jUl“\
 TITIQI
 QTUIZIIHE
flfllrlltfl

n-cl
 I
1
 A-=

zin
 P
1
 D"
 FII11-q
and
nan
 TOP

Cylinder

Piltun.
 0.010
—
D
D-45

|_
 _
 I
H.15--[L351-mm

I
 5EClJN_D__|_g.'_l5-Ilflfimrn

.
 __
 _
__|1;5_|1__
 I
t'l.31'J-U.BDmm

l'|'|

DOB
 IU.U§filI:I_.D‘I"I-_IflI

IIZIIDE
 —
U.I:I'Il'I-
 InI

Plstqm
 'D,|II,
 45.93
-
47.0?
 rh
_II.BE'IJ'
 —
I.BR5fl-II
 inl

PI5Ifll'l
 pin
bore
 _
11501
 —
‘J3.
 mm
10.5119
 —
El."-51
 TI
IHI

._E'1'1=.=."1a12*!:!?!=_"!=t"!*_‘-F?-_
 "’+F"?.—
1=’:9f’:?*:!11..!'i?:.5i1i15*=’-5‘"I

Rig,-tg;|_|-_|_t:|i|-|
 up,
 _
IIQQI
 13
rnrn
IIl511G—U§I'IBI_nI

P:-»
						

							 
I-ID1‘\TD1!..(/

E"|"L1NDEFI_i‘F'|STUN
 C-III
“--

IIILINIIEII
 IIEIIIWAL

Hem-m.=e
 the
c~,-Iin-.ie|'
 head
[Salmon
 GI.

Flamcr-'a
 the
6
mm
 halt

Flumm-u
 Ihn
gun-it:
 |uII|!-1
pm
aru.I
 guide
 roller.

Fiammle
 the
cvlind-er.

PI-eirnrwtr
 tho
D-rir111,qaiI-re‘!
 and
|:Iuw|:l
 |.mu_

CY
 Ll
NDEFI
 INSPECTIUN

Inspect
 the
c-,-Ilmtur
 burn
rnr
umar
 ur
|:Ii||m:l;|u
 -I‘

Meat-urn
 thn
wlindar
 |.D.
at
thraa
 laueli
In
III
an-cl
 '1"

mcia.

STANDARD:
 41005-4?.u1|s
rnrn

|1.II5BB—1.B51DInI
 _
_
_
 _

SE
 HUICE
 LIMIT:
 47.05
mm
H.552
 InI

'_
~:-
-"P!I°‘T'
 _

_
L
 _1__
 TOP

‘
 "
'
:
 '
r-
 .

=._':__I__:)-—-}--...l
 SEGCIHD

1.
 'r|-nan

7H2
 I
T-I
 LLEFI

PIN

pr.-1
 -.—.
 .
1-

.
 T

PINS

Dal:
 ul
issue:
 May,
IQIBD

'53
 HDNDA
 MDTCIH
F-U-,
ITD.
 |-"'_"-\.

/1"‘.

__4—|.,_

_.-\.,_  
						

							 
""

\-M-J
 BTU
 cv
LINDEHIPISTDN

“T
 PISTIIII
 atunm

|"Eacc
 I
anon
 lrowai
 lI‘I
crenl-main
 to
I-':r:r1
 dirt
and

peruout.
 F

HON’
 nae.

 -I

L

Hem-one
 the
piston
 pm
dip
 with
 nE|£r.IIu
 nuee
piieu.

r-—-
 I'I'€I$i
‘I111:
pitta-n
 |'.|in
out.

Hemmle
 the
1.1I1mn_

ii

III‘-_"'|.

ea‘

’__\
 PISTDH
PIN
c:.1P
 _

PIETDNIPISTUN
 HING
INSPECTIUN

hhmurp
 II'||:
piston
 rI|1g-to-gro-we
 olaararfl.

STAN
 DAFID!
 0.0
'lfl—I.'I'.III~lI-5
 n'|n1

III.l}IJDII-*-CI'.III1l-
 inI

SERVICE
 LIMIT:
0.12
mm
ID.MBInI

-I
 Remove
lha
|J-IEEOI1
 rin|;|-5..

NCITE
 _

Do
 not
 damage
 the
piston
 rlnga
during
 re-

rnmrul.

Inlipact
 tlw
pinnn
 ion
riu-n-am:
 and
mranka.
 rina

gramraa
 for
waar

r-

rw
 Insert
each
piston
 ring
into
 the
wllndw.
 and

maaaure
 the
arid
 gap.

STANDARD:
 TDFISECOND:
 III.15—IJ.35mm

III.lIIl~B—fl.'I!I1#InI

I,-5
 OIL:
fl.30—0.Bfln1InIfl.fl-12—D.D35in]

SERVICE
 LIMIT:

TOFFEE
 BOND:
 11.5
mm
 IILBZ
 in]

If-

Dan;
qf
lwue:
 May,
I981]
 T5
 7-3

EIHCINDA
 MCITGFI
CD.,
I-TI“-l

_   
						

							 
HONDA

f

GYLINDEHIPISTGN
 CTII

In'|B::aur1.:
 the
piston
 OD.
10
rnrn
 IO.-I
I-nl
above

the
 aI=:|rt':
 hdrttum,

STANDARD:
 48.88-47.00
mm

l1.a5::|-:.ae:u|
 InI

SERVICE
 LIMIT:
415.50
mm
'II.B|l-Tinl

Cflicuiate
 131a
r_",'I|:1:.Ier-1|:|-|::i:|:|-:m
 ttieai-1|-||::¢_

STANDARD:
 D.|IIE-IHI35
mm

Ill.DIZlIi—II.IIfl14
 InI

SERVICE
 LIMIT:
0,15
rnrn
I(I.BMl|':I

I|$E.B!I.1rl
 lhl
piemn
 pin
hull
 I,D.

s'rmoano=
 13.002-13.000
mm

II1.511a-11.5121
 ml

SERVIIIE
 LIMIT:
13.055
l'l'I'l'I
I'U=-51-I
 Il'lI

_.-

Ramoua
 1.'h::
Iu'It
::r:lI':I€|:nB
 IT-\'3'-fI!"I'.

Measure
 tI1e
connecting
 rod
small
 and
I.D.
with
 I

lrmili
 hole
gauge.

STANDARD:
 ‘I3-fl‘I3—13.fl-I13
mm

Io.e1:a-41.515
 ‘mi

ae|=w:::e
 :_m|'r=
111
rm:
In.ea:n|

53:;
 nation
 II}
for
 rauieoerrrarvl
 prneédurfl.
 -

Inatall
 the
I01’!
ermkeuae
 never.
 -

Date
 of
Issue:
 May,
‘I950

E‘-‘IHDNDA
 MUTDH
C-IJ..
LID.

?_4

‘re
'
 .131

-I.

-L

.-“""‘~

1""'*~.
 '—_
 ‘I.

.I
 .I.

_|-._
 |  
						

							 
“I
:""‘

J,-_--.

’;""\.

F7
 r:

f"‘-

F"

f'\..

r"'*
 -'-\
 @a"‘:1:5"::

CTLINDE

FUFISTDN

Mun-sun:
 the
piston
 pin
Cl.D.

STAN
 DAFID;
 1
2_.BB1l-—I3»MG
 mm

IILE1
 15-15118
 InI

SERVICE
 LIMIT:
11$
mm
ID.I5'I"I
 I'I\I

C-almtete
 the
pistorr-to-piston:
 pl:-I
::Iearan¢':e_

STANDARD:
 II.II‘EI2-IIIIJIIII
mm

IILI-'lI3D'I
 —I'J.EIIlS
 InI

SERVICE
 LIMIT:
B.IIIT5mm
 'II].II‘II1IJ-
InI

PISTON
 FIING
INSTALLATION

lr|.11;|I|
 the
pinnn
 rinqa
-mm
we
marilinei
 hrfina
He-

%
TDP
ewe

-After
 Imtaliatiun,
 the
rings
 ll1:uLII::I
 to-'I;IIl
 gggqyqg.
mmg

I'reaI'§'.
 .___

(.___
 I
.
[1-o
 not
:1:-_I|:_::_th|
 rap
and
sauaind
 rinqa.
 OIL
mug

Space
 the
piston
 ring
and
gap:
 130°
 degree:
 HDBFL

Die
 not
 ellqn
 the
papa
 In
‘I115
 fill
l'II\-I}i-
 "r

——1“::.
						

							 
PISTIIII

lIlSTll.LlII'IIIlI

Afinlv
 moi‘,-b-danum
 LIILLLIIIIIII:
qr-use
to
the
 nonmet-

ing
 rod
 email
 amt.

lrdtali
 the
piston,
 piston
pin
and
 clip.

I‘-IDTE
 '
lnetall
 TJIE
platen
 with
lhr:
"IN"
 r:n.;|rIc
facing

H1!‘
 ir|I;||Io:e
 ;irIc_

'
 Do
 not
 align
 the
mater:
 pm
clip
 end
gap
w|th

the
 plslitm
 1:uI!nut_

I.iI'|.IIIIIEl-'I
 lI'ISTll.LlII'il]II

II151-ill
 1.I'|E'
|1€ILl.IE-I
 pafll,
Cl-ring
 and
gitiqqt,

Apolv
 a
thin
 coat
 of
engine
 oil
to
the
 |:|I|1|;1.-r|
 ring;

and
 cylinder
 wall-

I-rutail
 ll-in
cyiinehr,
 oumprnstinq
 the
piste-11
 rings.

~'=.=.IE
 _

When
 the
cylinder
 is
half“-e-,:
 |:Iu'|f|'
the
|,'|i1-fljunl

r-IJLIT-I:
 '01:
tum
 chain
 through
 ti’:-a
ctrlin-dar.
 %_

o-nine
 PINS

7-e
 E
 Date

of
Inue:
 Hay,
‘IQBEI

EJHONDA
 IIIICITGFI
C‘-D-.
I-TD.

HONDA

GYLINDEHTPISTDN
 ETD
.-~.

.---—.

.-"'
 Z‘!-

I

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