Honda C70 Manual

							 
1-Ionir

rm.

KT-§\
 ELECTRIC

STARTER

BFILISH
 INSPECTION
 B1;“_|§_-_,i|
Bflr__|5,i.|
r.;p|1|r-45

FIE-moi-9
 t+|r;i
;.i:.-uiirr
 motor
i:-see
screws
 and
ii==:i

rrovei.

In5pi:t:t
 IIii:
1JIl.i5I'l-E5
 and
l‘i"ilI-iii-i.iFD
 II‘IrI
I-'lI'I-l‘!I|
 |l'=""flTh-

SERVICE
 LIMIT:
-it
mm
 I018
 in]

Iiierr-iuri+
 orush
sprinit
 tension
 with
ii
ti-irifl-Q
 BBBIE

senyiitze
 LIMIT:
anu
gI‘lII.G
 ozl

COMMUTATOR
 INSPECTION

Rf:-tn
 uyc
II
to
 iiir
i‘il-BILHIL

FIUTE
 .
.___

FI|:i:pri;I
 tl'iii
Ini;i.i1it;iii
 IIFILI
i'ii.Ifi1IJEI
 OT
ihiI'n5.

irispi:-st
 II'|n-
commutator
 hats
for
Ol5IIOIOl'i1l-i1li'I.

Bars
 i.l
seraiurecl
 iri
pairs
 inrliriaie
 grounded
 arniiirlur:

coils.

NOTE
 _
_
__
 _____
______________________
 COMMUTATOR

I
 Do
 i1-sit
 use
i.-mary
 cloth
or
rant!
 pair!‘
 Ian
Eli!
 _‘

IIIIJ|11FI'lLlI‘i'I‘I.I.I'I

CI'|r_st;It
 ‘I'I1|'
i:i1intiriui|y
 L‘iieL'.r.i'Ei:rI
piliri
OT
i2flf'i'ii'i"iLHi'iOI‘

hers,
 and
!oritii.'e-en
 commutator
 hurl
iiml
im-niiiturfi

theft-

Cerrimutator
 hat
pain:
 Continuity

.it.i-rniir.urii
 to
1IieI1:
 No
contlnuiw

Date
 of
lseiis:
 Miiy.
IQIECI
 ‘I
6
 3

-f.-HONDA
 MOTOR
CO.,
LTI'.'i.  
						

							 
ELECTRIC

smmen
 C70
I-»

.;;.;._.|'

—._
.-’

EIHUSH
 WIRE
INSPECTION

CHEER
 Iu|
rur|t|n|_,||1;5r
 f:'|:|-|'11
1_h|g-
|_;1|_1|u
 h-"1-|||-|3|
 1;|;|
"Lg

IJILHII-8'!
 ‘I’-rITI'I
I1IE£II';
 W
IE
 Jud
 l|.11hn
 momr
 |:-ass;

RI=|'.I-E-llr
 the
I:lh.ri1"|
 |.\-I-r|,
|I
fin;
 w|rg
 |g
bq-
						

							 
F‘

If

3'"-
 .r“~-

.-*""

.-'~\

5""

If-I-I

I-'—I'.
 lfl
 /HONDA

GTO
 ELECTRIC
smnren

STARTER
 REI.l’f

I
 N
 SP
 ECT
 I
U
 N

U-:=:;:-r|::;-z
 I"1I!
5!.'.|rI|:*.
 nu'|'1r_'I|
 !h.|'IuI'-
 WIIII
III-e:
igm
 |c:-I1

ON.

The
 OUII
I5
II-.mn;1I
 I‘
we
 >L.=|1e-
 Id-lay‘
m'IIr:2Ir_I|v.Iu

I-7D|'I"-'.'.'I2II
 LIII
uII|1'|lnE|r:'
 Iu
[||.":
 |I||r:|:|
 rcII;w
r'n.|1'r’h

I'.':dL1lc-
 Inrn1-n;|l~..

'€1|:|n|1=-ct
 i
Ei'-4'
 Dfll'.IE-‘I
 -,-'
r.u
 1|-Ir;
 Ilflllfflh
 win‘:
Ir;-.1111-;.

TH:
 :.-'|.'\'I||:I1
 I’.
|1r:-'rn.:I
 II
II1n||:|'I
 l1lIlI1|'IfllJI1l|'.

STIIIIITER
 [:LI.|TBI'|f'I]RI‘l'E
 EIIHIII

HEMDUAL

Ffnmuulr
 Ih-Q
AL.
 Qarml
 at-Jr
rntur
 I5-artiun
 I41.

FIIE-'1'1I:m:-
 The
star:-an
 I:-hmu
g|.,|-|.Ir:
=r|c:I
pm-|:=4:Iu|.

FI.n-'r|-'.1\1I.-
 IIII:
:|;:-r|:r|::II.r:1
 5-1:11-n-;|
|'|Ia11||.

Flumuue
 the
5|‘!-EIIII
 ri-'1-;|.

FIErI"|u\'é
 IIII:
11B|Ir.'I
 |:hni||
.1|1rl
:|'Ir|I|:I€1:1s..
 SIAFIIEFII

H.-|:LA"r"

4!_'\..

SNAP
 HING
 CI-IAIN
GUIDE

PTIUTEL-TDFI
 SEWING
PL
ATE

Daze
 or
Ir.:ue:
 May,
IQEIII

$1
 HUI‘-IDA
 HIUTDP
 Gil,
LTD.  
						

							 
.-i

Homnnf
 I

ELECTRIC
 srnnten
 CHI
I"

'-.
-

.._E“/*1’

STA
 RTE
FI
C
LIJTC
 H
D
I
SASSEM
 I3
LY

HEN-‘lEl'JB
 ‘II’?!
TI"lI'£E'
 S-EI'E"|'l"5.

PIl£'|'l'I=l'I'I|'-EI
 thn
zlartur
 ~3I||tI;r:
 r.Iu'I9r.

Harncwa
 1ha
ralle-rs,
 nlungers
 a|1|:I
sprm-gt.

STAFITEFI
 CLUTCH
INSPECTION

II1:-|:IIJr:'.'
 1I'Ii
I|:|II=Iri
 fur
imuuth
 u-perivnn.

CIIECII
 III:
rt!-III.-r':
 Itlr
I::\Ir;r::::Iva
 wunr,

Impact
 the
drive
 and
cirsuen
 spruckuti
 and
chain
 fur

#Il:ljI$$II|lfl
 ‘||'I|'IIfl|'
lflr
HKHIF.

I|1~:a:|LIn:
 the
unue
 -sp-rI:Ir:|-=.et
 U.IJ'.

SERVICE
 LIMIT:
35.71-mm
 I1.1HI?InI

jg.
-|--—-

STAHTEH
 CLUTCH
ASSEMBLY

lnrtall
 thi
rtartur
 r:JutI::h
uutrr.

NQITE
 Eta!-H:
 the
arid
 01
nnlrh
 11:-rmv
 against
 Ihngruuvn

In
 thr
 clutch
 -:I-u'tl:\_r.__

Irtstpll
 thu
BDFIFIIIIB.
 |:|lurI-|1u-rs
 and
ruIIur:-I

INSTIALLATIUN
 Rawrn
 mu
rumcwal
 |:|rn|;~!:r.1|.I|'\:.

{S-6
 — —
152
 D-.1n_-u'I
Iisue-:
Ma-,1,
I981]

-DHCINDA
 MOTOR
CCL,
LT
I1-
 dfl

».—\\

.—’-.
 I.

.I—I\._

In

.-"""I
 ‘I

.-*1-.,_

-_

.-.,_

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F.

f

_J"
 .p-

1"“

1”‘
 .="'“'-

r'““
 r"~-.
 {HONDA

oi,»
 cm

IISWITCHES

1?—‘I
 HANDLEHAFI
 SWITCHEE
 11-3
17-2
 IGNITION
SWITCH
 1?--'-I

1
 Tr‘
 -
 2

SERVICE

INFORMATION

BRAKE
 SWITCHES

NEUTRAL
 SWITCH

SERVICE
 IIIFIIRIIIITIIIII

GENE
 HAL
INSTRUCTIONS

-
 Sq|Tru
 wimi
I'I.l|.'t*
dliforent
 colorant
IJIII1EI!-
around
 them
near
the
o-onn-uctnr
 Tings:
wit
no-rirletlfld
 ID
G-II1E-I
 '-'-Iirflb
wI'Iit-‘I'I

oorresn-ond
 with
thn
Ia-and
 uoinr.

'
 All
 |'.III:'|:II|t
 pIog1
I‘IB\'B
Iooitiiig
 tabs
that
must
 be
rolauiod
 bcfuru
tllsconnflclirlg.
 IHII
ml-ll!
 DH
-iIll5II1I!"J'~\'I'IEfl
 I'B'I1-'I'I'll'IIE’tFl'lD-

-
 Thu
 fnllu-wing
 |;:;\II;|r
curt“
 qru
un:I.I
 1'IIruI.IgI"|uut
 1I'|ii
n!1:t|I:|I1
 and
IZIII
the
 Wirifig
 dimrnm
 IHIIBIIIJI1
IBI.

B
 —
Blue
 G
—
Gwen
 LG
—
LIgl1tGr1HIn
 ‘W
—
White

Bi;
 -
a|q-=I=
 Gr
-
G-Iv
 D
—
flmnun
 ‘r
-
‘I’-lI'Im'r

Hr
 -
Brown
 LB
—
l_nfl'|IBluI
 H
—
Hnl

-
 To
 IECIIBIB
 an
Elgctriual
 fa|Iurn_
ch;-ca
1h:
wntirioity
 o-I
the
 electrical
 oath
throuqh
 thn
part.
 A
oontim-|i11|-'
 check
uurl

u|unII'|-'
 be
mad!
 wi'J'It|ut
 removing
 Lhu
pan
 from
 the
mowrcvclu.
 Simply
dim!-linen
 the
wire»!
 and
connect
 B
wnfiflvlw

tIfi.1ji|!
 cur
'ItI|IIi-I;lI'iI‘l\I'I'I.1!I,I:|'
 In
|I‘I!
 tE'1'I'flIfli_I!
 CIT
III'DI‘lI'IB|IIII:I2II'Ii

~
 A
 ngntinu-tlf
 I-i;51'ur
i5
usniul
 |.\'h:r|
izhmzking
 Lu
find
 out
whether
 orr
not
 thorn
 is
an
 uluotrical
 crmneclifiri
 I-IE!‘-':HEfl
W-"II

points.
 Au
ohmmatar
 is
l1BBI2IB‘III
 to
munsuria
 the
roiistermu
 of
II
circuit,
 Ii:
when
 ‘mute
‘rs
a
specific
 mil
resiutlnui
 iI'I'1\=II'-‘HI.

nr
 Ir-|!|.|:n
 |1hE|,.1I|'-1]
 for
high
 ronlataiiira
 I!n.|lBI.I
by
corroded
 connections-

Dato
 of
Issue-'
 May
 _
I
‘___
 —

_

_
 I63

-soiior-ion
 MUTIZIFI
I::o.,
LTD
 1
7'1  
						

							 
.-'“

'--.

HONDA.
 if

C70

SWITCHES

BIIIIKE
 SWITCHES

FRONT
 BRAKE
SWITCH
 FRONT

BRAKE
 SWITCH
 E‘|i""r'
LEAD

FI=_-ni-owe
 the
I1-satlli-ght.

I.II5I;Q|1fli_tI;‘Ij
 l'I‘|c
Ct,-‘Y
 _1||tI
Bit
iieatti
 oi
me
 front
 brake

twitch.

Clmizk
 fur
i:uniIno.|-,-
 with
mi:
imnt
 brake
 app-Iiacl.

Eraka
 applied:
 Continuity

Bash
 not
amaliciii:
 No
continuity

I'Ic|:ilai:c
 II‘!-E
switm
 I1
-Wee-aasarv.

1-_
 w

BI:
 I.E-"IO

REAR
 BRAKE
 SWITCH

BRAKE
SWITCH

Fem-we
 rh»:
r-gm
 sicia
cover.

Disconnect
 LI'H.l
G.-"F
 oI||'.I
Bk
Ic|.i.|d1
 [If
1h»;
 Igai
 hrukg

wiritch.

'3I'lE~E|I1'flr
 riflntinuitv
 with
the
ioar
 built:
 uppiiq-i;i,

Brain
 lppliad:
 Continuity

Brlitl
 not
opp-Iinlt
 No
corrtinuitlf

Rflfllucc
 thc
=iw'i1ch
 ii
ricccssarah
 E3?

Bl
LEAD
 G.""|"
LEAD

NEIITRAL
 SWITCH

IIEIITIIIIL
 SIUITIIII

FI:I1‘i|::Ni:
 thc
IEII
 Li|:Ii:
 l:_:11u:|'
 ;|r|-|:I
angina
 5p|'g[.Ii:g1_

co‘-rot.

Ilhirck
 it‘-rr
swilch
 tnr
coctintiitv
 hctwccn
the
switch

turm‘-nol
 Iw-re
romou-ed}
 and
gr-oun-ii
 -mih
I_hc

I1l.EiI1SI‘i‘|-iiinn
 In
rii:|.irrr|I
 qrirl
with
 thn
h'3n5411i55-I011
 ||1

any
 goat.

Ih
 I'lIl!IuI‘IHI|I
 Cwrlfimity

In
 gait!
 Nu
uominultlg

Rec-i=v=:i=
 lI1r'
l"'tllII.I'UI
 wirI1':I'l
if
necessary.

_-.1,-"'

F

1
 7-2
 ‘H’
Don:
oi
Imm:
 May,
IEISII

IE.-HIJNEIPI
 MOTOR
ISO"
LTD.
 .-

'-

.-
 -._

_,_\_l

,‘
 ".

P».

‘HE

‘H.

'-.  
						

							 
{I'-'\

Ji-"It

_i-.

Ii-"'-
 r

K“

|"""'.

Flu

F.

F.
 ,-t.
 /"T

HONDA

K
 _=_j
 GTII
 SWITCHES

HIIIIIILEBIIII
 SWITCHES

The
 |1flI‘||_'II|II1I1'
 -::Ii|:.t|=-I
i'.|'|':tt!"|G'5
 *II'l3"I‘--
EUI"
5IEII'l=I'-I

I"|:irI|,
 enigino
 atop,
lt=1'1cII'
 I1!-1-I!-I
I36‘
I"¢I‘tI-=¢'"I
 35
3"

os-'ic'11hl',r-

I3."-r
 |||_||t-,-
 1ni;:~.
I-:1:
ihe
 co-rri-|:|nr-itnlrl
 f-II
the

I-|.:n:in.-Imr
 cios:-or
switchon
 i1=IIoW'

I:Il.'1"|lll‘il!
 tho
hm|r:IIi5h1-

t',Qmin||-ty
 shot;-Ir]
e:-mt
hntwi-c|'I
 TIRE
CHIC"
 ¢'=I'-Ifl!

ynryg
 gin
i!:|i:?'i
 |.th.B|'I.

HEADLIGHT
 HI-LOW
SWITCH

HI;
 Bu:
‘I’

|".i'I|DDLE
 INI1
Ii"toBtn‘I"|'

L-D:
 "I"
toI|‘|'

TURN
 SIGNAL
 SWITCH

LE
 FT:
 O
to
 GI‘

QFF:
 No
continuity

FIIGI-IT:
 LB
to
Gr

HORN
 BUTTON

LG
 tn
I3
with
 button
 dlprnnd.

‘No
 continuity
 with
button
 r1iIhlld-
 H

EADL
 IGH1
 H
I
-LO
 SWITCH

TURN
 SIGNAL
 SWITCH
 HDFIN
BUTTON

I-loadiighl
 Hi-
Loni
 Switch

I_—
 __Hl
I
|::|
 Ln-

IL"
 .
-

|l;qlurootI-a

IHI

'
E.»-——C:

CJi-—-CII~
 -—-C5

p.l,§'__

ti
 -1-"I1
 '
W

Turn
 Signal
 S‘n'Itl=Il

-I
 IR
 W
..L_

_'dF'i'=
 _
 _
__

LEFT

|
_
_-_t-
 _--I

RIGHT
 E3“
"-ii-1'

_
 Co-Ior
 coda

Hum
 Bi-mun
 LB

GI‘
 0
_

I
 iii
 E
i

N

I’

.
 .
 1-
 T

i
 Color
 Codi
 I
 LG
 C
 .

\._
 I‘

-
 e-

I‘-I

Date
 o-I
Issue:
 May,
I950

QIHUNUA
 "-IICITDH
130.,
LTD.
 ‘IE5

1
7-3  
						

							 
SWITCHES

HONDA

I‘-.%»,xI
-_
_—I_

STARTER
 BUTTON
 EN

‘FIR
 to
LGIFI
 with
button
 denrnstcd.

No
 continuity
 with
button
 released.

Starter
 Hutton

FiI"e'

*‘

I
T
 ..'—

.-05-‘
 =
Qi-

Ccint
 @955
 wn
 u:I.Fi=i
Y

ENGINE
 STOP
SWITCH

RUN:
 No
co-ntinuity
 -F
NE

ET-BF
 swircii

CIFF;
 Bit.'\'i'
to
 STARTER
BUTTEIN
 -.

Engine
 Stop
Switch

o|=F
 _—
 IfT.Ii-I-—:i:1'—
 _

nuiiii
 —
'

tin"
 .-.___?
~

Ifioiorcocie
 N
BItNt'
 I
G

IIIIIITIIIII
 SIIIITBII

FIltl1"I.Il.lE
 tlic
II'I.1I'llt1|'.>'-‘E1’
 E-"II'.I
|.IiIi£i:|r||i|!c|
 Ihn
r:|1|i|"|lci

Chock
 thc
I:onti-'=|.i.|-,-'
 oi
ii.-rmin.-ii-i
 ir-.
1‘I‘IFr
 iflrlitinn

5'.f|'II'|‘:I"|
 '-tiiI|:
|:.it|||_1|r_ir

I
 OFF:
 HIti'\|'|IIJi:i-G

ON:
 Bltto-R

‘___
 st
anti
 to
_

grr
 i

'19.
 Q
-~

_E2oIot
 ondn'
 B-It
 H.
Bttfllt
 Q

Rcplece
 Ii"'|B
switch
 Ii
itc-::|='t5;|ry
 _.-It.

.
 ,
.2

IG
 NITICI
 N
SW
 ITC
 H
 COUPLER

1
 7-4
 we
Onto
r.-I
italic:
 May.
ISBEI

-D
 HONDA
 MUT-EIFI
C11.
LTD.
 _.iI-I-I.

.

-\_

""“\

____

_,_  
						

							 
_,-r

I-.

|"rI_I-‘L

—._-

Ir"-
 if-.

I-"'"
 .-.

I’

IF

I.-.

_/F“
 IF
 IBIRIJUBLESHIIIITINE

ENGINE
 '|'iIlLL
NOT
START
 OR

IS
 HARD
 TO
START

ENGINE
 LACICS
POWER

POOR
 PERFORMANCE
 AT
IDLE

AND
 LOW
SPEED

POOR
 HIGH
SPEED

PERFORMANCE

SMOKING
 EXHAUST

FAULTY
 CLUTCH

Date
 of
Issue:
 May,
IHSIII
 IE?
 1
8
 1

HONDA
 MOTOR
CO..
LTO.
 13-2

1B—3

‘IB--4

I3-Ii

13-5

'I3—S
 DIFFICULT

SHIFTIN-G

ENGINE
 NOISE

MOTORCYCLE
 POLLS
TO

ONE
 SIDE

FAULTY
 FRONT
Si
REAR

SHOCK
 AEISORBEFIS

FAULTY
 BRAKE

ELONGATED
 DRIVE
CHAIN
 1

B-5

1
 B-5

13-?

18-?
 IEI—i'

‘IS-T  
						

							 
r"'

=-i

tnoueteseoorrnro
 CTR
--,

EIIGIIIE
 I'Ill.I.
IIIIT
STIIIIT
 III!
IS
IIIIIIII
 Tl]
START

I.

1'.

Ci.

-II.

S.

S.
 CI‘IE|'.‘h.

If
Iu|:I
 rtt3[,I'|1J5

tattmmtqr

F
 IJE
 L
H
EACHES

CAR
 BU
R
I-TTOR

I‘
 Remove
 toerlt
t:-lug
Gr
ten

tnerlt

GOOD
 SPARK

I‘

Tcet
 cyi
Inder-
 comore-“inn

TORMAL
 CO
III
P
R
 ESSION

1'

Start
 elnqi
rte

ENGINE
 STARTS

I

‘I’

Remove
 ioerlt
plug

DRY
 PLUG

5Hi'l
 engine
 with
ettoite

clototl
 FUEL

DOES
 NOT
REACH
 A-p

CARBURETOR

WEAK
 OR
NO
SPARK
 in

LOW
 COI-IPRESSION—-i—-e-

ENGINE
 Fines,
trot??-

ooes
 r-rot
st.-ant

WET
 FLUGHA
 ——b
PCISSIB

LE
CAU
 SE

Err'i|:Ity'
 ‘Iufll
tank

Clogged
 htel
line
ICIE-t'M=:ttt1
 fuel
tank
 5;.

carhu
 reto-r

Clogged
 htul
yelyn

Clogged
 Iuel
tenit
 oep
breeriinr
 hniri

Faulty
 ot
fouled
 plug

Fouled,
 burnt
nr
pitted
 cttntoet

brceitor
 It-ointt

II‘|i';'t'Jri‘t!-t'.'I.
 hruflkqr
putnt
gap

Faulty
 condenser
 -'-t

Brolterl
 or
thnttecl
 hiqh
tent-ton
 wire
 '-“t

Open
 or
ehorteo
 ignition
coil

Faulty
 iQtiItIIJl'l
 st-yi1:i;h

Irlcormct
 ionition
timing

Er-nine
 our
tzrm-itienl

Nu
 unlyc
 clearance

"-I"-alirc
 rtucit
 open

Worn
 cylinder
 St
oieton
 I"i|1g5_

Blown
 cylinder
 hr.-.er:I
gleitet

Flaw
 Irl
-t:ylinr.Iirr
 he-ed‘

Incorrect
 yeltre
timing

Choke
 irelrie
open

Ct_ltI.'Iun!l.ttr
 pilot
egmw
 Qipen

Air
 ieeiirro
 t'I\rou|;h-
 It‘ttaItti
tht|'nIfr,'.iI|:i'

Incorrect
 Ignition
ti
mitrig

Fiooiclecl
 corboretor

Cerhrtrrrttr-r
 choke
excessively

closed

Thtottl!
 ‘relive
crceetiireiy
 open

1
 B-2
 In
Crete
of
Imtez
 Iiiiey;
IEISII

'13-
 HONDA
 Mfi-TOR
tICI.,
LTIII.

m 
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