Honda C70 Manual

							 
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 _.l-"-

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 ff‘-.

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"'“i:‘1“u”“

INSPECTION

C-heelt
 the
uelntinulttr
 nf
the
 EDI
 utl-It
 termi-

net;

Hepteee
 the
CDI
 unit
 if
the
 readings
 are
not

within
 the
llrrlltsi
 I|"ll]Wh
 in
the
 table.

NOTES:

I
 The
 CDI
 unit
It
fuIIt,-
 transirttlrized.

1'
 Fer
 ee-curate
 testlltg,
it
it
 neleeseety
 te
uee

e
 ntecilled
 elnlttrll:
teeter.
Use
elf
en
 Irn-

nrntter
 te-ster
may
give
false
 readings.

I
 Use
 a
SAHWA
 ELECTRIC
 TESTER
IF,-‘N

CITBUB-UDZEIDIJDI
 at
KCIINA
 ELECTRIC

tester:
 ITH-5H]-
 '
 "SK

EXT

+
 Fruh-I

_
 mm,
 aw
ettt
I
 IGH

sw
 I
 -=~=
 DICI

EXT
 01-20
 LIL!

|
 PC
 4EI-
IUD
 2'IJ—B-‘IIIEII

I
 E
 I-51]
Ill
-
Z0
 .'.lfl—5'I]fl
 t_lJ

L
 '\

EIBITEII
 IIOI|.,/
PULSE
 GEIIElIlTI]ll

J5.

INSPECTION

Ffltmteele
 ihe
frunt
 t;t;rt.'tt-r.

Die:-eltltect
 the
A12.
 generettsr
 emu
cnuprel

Measure
 the
ettc-ter eeil
res-lst.a-nee
 between

LI'lt:
 I.'l'IBCIlI:'l'lllI
 wlte
l|:rrl‘t|r"-BI
 and
the
gntmntl.

EKCITER
 CDEL
RESISTANCE:

‘I5lJ—i'DG
 Ohm

f-Iurte1.lrt-
 the
pulse
 genenlter
 ecl-il
resistance

between
 the
Ll-‘il,lE_|I"|\i's:tl:
 intl
lI't|l
g't;|etn
 wit:

terminals.

PULSE
 GEHEHH-TU-Fl
 HESISTIIHCE

ED
 'IT{'I
flhtrl
 __\_

Date
 er!
leave:
 I931

\§'I‘l|:|§'l-IDIIYII.
 MCITDFI
CD.,
LTD.
 B2

ADDENDUM

SANWA
 It.
K
 ohm:

-
 KCIWFI.
 at
‘ILIIIII
 Dltrrte

I

-.1

20
25  
						

							 
HONDA

112
 ADDENDUM
 --fi_

I3.
 ELEBTRIB
 STARTER

STARTER
 IIIIITIIR

REMOVAL
 T

Renteu-e
 the
mrter
 tlrive
serecltet
 .t.nat.t
ti-up

lpage
 1EI-RI

Dleecnneet
 the
stertnr
 cabal:
et
the
 mtl-tor

terminal.
 I

I

Flemnue
 t.ne
starter
 nt-eter
meunt-ltq
 IJ1.'l='I11i
an-d

remflllt:
 the
meter-

stenten
cent:
 ___

.-Pea

I-"-L‘

.-—-,

I
 _
 5'4
D
tenll
 e:
Nttth,
 leer

20 26
 eaneeeiuunten
ecl..LTtt.

_
 _
 _i
__
 Ti  
						

							 
HONDA

' 
 B]
I]
 ea
leettelteust

It.
 rtcutlctt
 rtttutts
 I

The
 autprrlatle
 ehalrl
ttlnslttne-r
 epneitl:
pf
it
push
 rod,
a
pne-tleett
 valve
and
rt
tettsipner
 sprlnp.
The
push
 red
pesititetl
 is
maln-

llilrtfld
 by‘
B
lrtl-It-'l-tflrlt
 Inteunt
cl-I
r-em
 thltirr-sttlittshttel
 eil
in
the
 ts-il
chamber.
 The
amount
 elf
ell
 present
 is
determined
 by
e

sore
 hine-cl
 action
 of
the
 value
 anl:I
the
tattsiener
 spn
ng.

When
 the
tensiiener
 spring
putltas
 the
red
 up
to
I"E'I‘IHZlllB
 eltein
sleek,
 the
erle-wet;
 wet-t-e
eperte
 ertel
ttlluwu
 r.til
t:t.ll.It:t:|.t:l:I
 in
the

reel
 ID
flew
 mm
the
all
chernher.

WI'ltH'l
 BIIIEH
 IH1"l!-IHI1
 11.!!!-‘I
Id
rfl-all:
 th=
1-1|-lsh
 l-tad
dmtln,
 preswre
 from
the
elll
In
the
 t:h-aml:l-er
 ferret
the
traltle
 t:Iesel:I
 sl:l
the

rttnitien
 uf
the
 red
is
rtteintain=al:l.

TE"5l°"EFl--_
 '
.
-.
 _
 tettslurten

nel.l.en
 '
;j@._
 K
 AH”

.
 _
 .-
-
 '-,1
.

1.
 _h_
 .............

-
 '
 PUSH
net:

ea
 I
 *"*'
ti’

:3
 “I-.-t=I3'.3:'E-Iifi

N
 -
-q-.

4';
 -

1;--.___'___

_

W
 -Y

.
.
 DNE-Wlt"l'
VRLVE

"
 ‘I
 E
 :_:1"'

.____-I-____\l_
 5-
_
 _

-l-I.
 _
_
 __

.
 _~
 i

__
 .-.;
 elt
cnenteea

+5

G
 mm
 EDLT
 E
F
 -TENSIDNER
 SPRING

SEALING
 BDLT

'1‘.
 I

ll
 \|

E
 -i'&P..
 .l"-LT"

_t

-.
 l>

I
 ll
I
 _
 -

.-v'=\":
 53'
 I

it--_...j;

Dett
 ef
lame:
 hIolr,,
IE8]
 _

El
 HONDA
 HDTD-R
CD-
LTD-  
						

							 
I-ICIIl!\iTIJ.!\..="'

"rs:
 ADDENDUM
 [:10
J;
-..

I5.
 TRIIIIBLESIIIIIITIIIS

EIIEIIIE
 IIIIIES
IIIIT
STIIRT
 [IR
I5
IIIRII
 TI]
START

I.
 Cheek
 -f
ftl-ltl
 is
glrltlrtg
 In

i:etI:iiuret.ei

GEITINGTD
 CARBURFTCR

‘J.
 Tnr
 sperlt
 test

GUDD
 SPARK.

El.
 Test
 i:i,-llntlei
 ite-rnpreesinn

COMPRESSION
 I'iI-DFIIIIAL

'1.
 5ti'l"II
 IJ'|i'
‘Il2lI.Ir2ni'li'Iltg
 nt:rn'naI
trtgrteng

pre-eefluru

ENGINE
 DDESNDT
 FIRE

5.
 Rernetie
 snarl:
plug

Dir’

6.
 Start
 with
eltelte
 appil-ieict

EIIEIIIE
 LIIIIIS
POWER

1.
 Raise
 wheels
 eff
greiuruel
 aiiitt
spin

by
 hand

WHEE
 L
SPINS
 F
REE
 LY
 NCIT

GETTING
 ‘I'D
 -

C-RITHUHETUR

'ii".IE-RR
 IJFI
NU
SPARK
 it-P

LD'ri't'
 CDMPRESSIDN
 -er

EHGINE
 FIRES
BUT-in

SOC-IN
 STOPS

WET
 PLUG
 - 

WHEEL
 DOES
NOT
SPIHL-——r

FREELY
 Pri:il;r=al:r!e

Cause

hlci
 fuel
 in
fuel
 ta-nit

Cl-:i-ggetl
 lust
tube
 er
luiil
 f-‘lter

Clogged
 I'Ir:iat
'-talee

Clogged
 fuel
tettl-:.
 i:iii|:i

hreether
 tube

Faulty
 tpitrlc
|.l-ug

Fouled
 spark
plug

Faults;
 CDI
un=|

Brerften
 er
shorted
 high
tension

wire

Faulty
 AC
generator

Elrrllltért
 tlrir
thrtrted
 ignitirgt-n
cull

Faulty
 pulse
generator

Fr.el.'ll"I'5r
 drlrflnrs-r:|.-et.I,
 brnliteth
t:rr

shertetl
 wires

Fm-llttl
 reeelll
starter

Value
 clearance
 teiu
small

'ri'|ltle
 stuck
 epen

tl'|'l:irn
 cylinder
 amt
t.'ilst-i:iri
 rings

Damaged
 rztrllnder
head
gasket

Sell-Bl'.I
 value

Impreprtr
 iraltie
timing

Choke
 excessively
 tit:-en

Cerbureter
 pile-1:
scisi-u
 excess-

rirulv
 closed

A-r
 leaking
 pest
carburetttir

lnsulatqr

Imprrrlper
 lttniti-en
timing
[EDI

rrnit
 err
ptrlse
 gettereter
 fault-gl

Crtrhureteir
 fliaicitled

Carbureter
 i:I'li:il:e
E'il(l‘l"ESlI'lEI'f

cl-used

Thrpttle
 rial-ire
erteiessi-.ieItr
 eipen

Preibaible
 Cause

Elrelte
 draggire;

Wetn
 rt-r
damaged
 wheel
bearing

Wheel
 be-eelng
 needs
lulzitliretiitii

DI'I'|'l!
 ehain
 ttr-l:ri
tight

Rear
 axle
nut
exeesthielti

tlgltteti-etl

20-2B
 2°“
Date

elf
Isaue:
 I'~[psi'.,
1981

EIHGNDA
 MUTDR
CD.,
LTD.
 __\_

‘i

ll.

.-""1

-'*~.
 J_‘i,|

='-~.

.1,
 I

__,_

_——  
						

							 
A

HClE:I_;I"]DA

‘B2
ADDENDUM

{-1.
 2.

r____|
 2.

4.

|f""".

f'-*-
 5.

+1

1.

r»

F‘
 H].

11.

F“

(___
 ljhaclt

tim
D-l‘B'55LlFI.=
 with
Hr:
[pogo

PRESSURE
 NORMAL

Tiiv
 Fll|;Ji|'.i
 acoolemtioo
 from
low
to

aeooncl

ENGINE
 SPEED
LDWEFIED
 WHEN

CLUTCH
 [S
RELEASED

|_igl-|1l»,r
 lr_'€ElBl'S1;E
 anoma

ENGINE
 SPEED
INCREASED

C?i1la1:l:
 ignition
 I!-rrnhg

CDHHEGT

Ciwock
 --nun
|:lnnn|n:u-

CFHHEGT

Ta-:1
 cylinthlr
 cuntprflfllfln
 ul-Ing
I

nnmpraaslon
 pauqa

."\lDFllMAL

ljiiack
 carhutltnr
 lcr
clo-gglng

HGT
 CLOGEED

Fri.-more
 spark
nlug

NUT
 FUULED
 CIR
DISC-‘ULCJFIEEJ

l

Fcemuma
 oil
larval
 oaugo
 and
chock

|;|-ll
 l|:vu|

l'.L*l'JFl'RECT
 Homo-vo
 ovllfldor
 hood
cow-r
 -inl-1

mapert
 lu
hrleation

V
 ALVE
 TH
AJN
 Ll-JB
H
lfi
 fl~.TEfi

P'+HClPEFlL"|"

Che-cl:
 if
oI1g|ou-
 ovnrhonts

not
 DVEHHFATEU
 FREE‘-BU

FIE
TDD
 LBW
E-1-

ENGINE
 S-FEED
noes
not?-*

CHANGE
 WHEN
CLLFl'IIH
 I5

HELEn5ED

ENGlHE
 SPEED
NOT
lNl'.IFIEA.SED—#-

5-UFFIBIEHTLY

|m:oHHEo1'-—_————--

iHEflRflEm 

1-on
 Low
-ii-_.-.

BLDGGED 
 FDLILEDDH
 DISGULDHED
 ou-

DIL
 LEVEL
 IHUUFIFIECT-Ep-

'¥'AL"|"E
 THMN
NOT

LUBHIGETED
 PHDFEHLY

oi.-EH:-|E.r:rE|::-E-
 Punt.-mrutl

lir‘:

Fl;-u|l:'5r
 tin:
vulvn

Clutch
 filpplrq

‘Mom
 clutch
 disolnlate

Warned
 clutch
rJlsI.:-"r-ill!!!

E.‘-orl:|urP.~tur
 make-clmod

Clogged
 air
ole-anar

Hemictant
 fuel
fl-ow

Clu-ggod
 full
tank
 hroittint
 tuba

filo-goat!
 muffler

Faulty
 CDI
unit

Faulty
 pulse
generator

Faulty
 ionitioo
 Idvinoor

lmproom
 ualv:
a-diusimont

'|."|'um
 valve
squat

Valve
 stool:
open

Worn
 c~,-1m|:le|'
 and
piston
 rings

Lea-king
 h-oatl
yulcot

In-iprmee
 ualvu
llming

C-arhumtor
 nu!
servlcod
 fru-

qufl-|'|t|'qr
 B|1|‘.'||JQl'|

Plug
 not
aorvlcocl
 frnquontlv

enough

Um
 oi
n-‘mg
 with
 lmpropor
 hnat

ranp

-fill
 level
 loo
hlgh

Di!
 lauol
 too
low

C-firltlkfllrfltflfl
 -all

Clo-ggad
 oi!
passaqa

Cl-ragged
 all
cm-nml
 nrlflre

E.:tE£5\i:-1'9
 oath-on
l:|ul-|:l-uo
 in

combustion
 chamho-r

Use
 of
|mpr|:||-oar
 quallw
-of

fuol

Clutch
 Llioniru

Fiml-pir
 mi:-:ILlrE
 tun
:2-an

Data
 of
‘mull:
 Noun,
‘H351

'2
 HONDA
 HDTQH
 50.,
LTD-
 ="

2o-29  
						

							 
I5.
 '

ADD
 EN
DUM
 I-Iomna.

"D

cm
 ~_-1
-~

ENGINE
 DUES
HGT
KNDCK

Check
 i-an-lfi-on
 timing
and
valve
 IHCUH
HE
l:T____i,,

clearance

CE+l'Fl
 HECT

Chaolr
 oirbumtor
 1ai1ol:
screw
 lN%HHECT-Eh

ocllrultrnent

C-Cl-Fl
 Fl
ECT

f

Chock
 if
air
 iiiEBi\Ill1Q
 beet
 LEAKJNG
carburetor
 -l‘|:Lllo1l:|r

H
 EJT
 LE
Alfii
 HG

Tw
 ilflaril
 rm
 wear:
on
:uTEr=rm|TrEu'ri-

GCIIDD
 EPA
Ff
l-C

Chitk
 igoilio-I1
 tlrning
and
lralaa
 INCORRECT

claarenoe

C0
 H
Fl
 ECT

l

Dlaoonnocr
 fuel
oube
 at
eerburelor
 FUEL
F1_El-“I
 RE5TF|t[_‘_TE|:|

FUEL
 FLOWS
 FFlEEL"r'

Hornoae
 carburetor
 and
check
 lul
 CLUGGEU
 E

clogged
 jel:

N
 illT
 BLDG
 GED

Check
 valve
tlrrrrng
 ||'-JCUH
HEIJT
iii,

Cliilil
 Fl
ECT

Chfiok
 valllo
spring
 tension

HUT
 WEAKEN
 E
U‘

20-30
 13.

Floaolarata
 or
run
 at
high
 speed
 ENGINE
Bil‘-IOCIICS
 E

Pflllll
 PEIFUIPIIHUE
 IT
LBW
 lliiii
IDLE
 SPEED

SPARK

Fllllli
 PEHFUIIIMHBE
 AT
HIGH
 SPEEDS

WEAK
 |-|.\_

|‘l]
 Warn
 piston
 amt!
r.:'fl|r|rJr.'r

121
 Fuel-a-Ir
 mixture
too
lean

13!
 Ur:
of
improper
 grade
of
luoi

Hi
 Excessive
 carbon
build-up
 ln

rturrlhualrurr
 clrarnber

£5?
 Ignition
 timing
loo
advanoocl

[Faulry
 EDI
urlil:
or
3|'l'|'fln-|::1|'|-

Probable
 E-auae
 _

1

lll
 lrrltlrooor
 valva
claara-nos

|2l
 improper
 rgnltion
timing

{Faulty
 SDI
unit
 -or
eoarlr
 ad-

eanoerl
 -H

|‘II|
 Fuel-arr
 mncturo
 too
lean

iii
 Fuel-air
 Il:'|i:|ll{l..H'B
 loo
ri|:h

(H
 Deterioraied
 |l"|:.Ll|a|!|.'1r
{I--rirq]

iii
 Loos:
 narburrrtrrr

ill
 Famw,
 carbon
or
wet
 fouled
 /_\_

eperlr
 plug

[El
 Flulhl
 CDI
unit

All
 generator
 faulty-

Faolry
 ignirr-on
 coil

l5l
 Faulty
 oulla
alzllraneel

[El

l¢'l

Probable
 Cause

ill
 Improper
 valve
claerarroe
 “M'-

liil
 Faulllr
 EDI
unit

l3l
 Faulty
 nurse
generator

HI
 For-llI'l1
 arllranrrrrr

.-"
"\-.,_

l‘ll
 Lack
 of
fuel
 ll'l
tenlc
 '

i2'l
 Cloggflci
 fucl
lino

131
 Clogged
 fuel
tank
 .l:lr:la|!l'lu|'
 fllhn

iii-J
 Elflggori

fool
ireluo

ill
 Clean

.---..

ill
 GJH1
 wroulrat
 not
Inetallocl

Waverly

-5-

I 1 I
 Faulw
 spring

I

1-

'DH'lIB
 Hf
|::|.lE:
 H|;r¢__
‘IQB1

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