General Performance; Engine - Honda C72 Shop Manual

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MAINTENANCE STANDARDS (Model C872, C877)
In this lis t, the d imensions without uni ts indicate "m m" (u pper step) and "inch" (d own slepl,
and ot hers acco rding
10
the units indicat ed. Mark
*
is exc lusive ly used on ly for
model CB77 and oth er s are commOn both model CB72 and
CB7l.
1. GENERAL PERFORMANCE
I
Ie m
Standard
I
Repoicing limH
I
Adi",HngPo int
Remarks
C om pre ss ion pressure 10.5 kg / em' 8.0kg/ em less
Disassemb le
Measure with kick
14 9.34 Ib/ in' 113.78 Ib/ in' and adiust
Fuel Consumption
45 km/
e
26km/
e
less
Disassem ble
Speed 40km / h
127 Br m.p.g. 73 Br mpg a nd adj ust 1 24 8 m.p.h.l
C om pre ssi on ral io
9.3 - 9.7
ou l
standard
Disasse mble
and adjust
l ub ricating oil con- 120 ee / l 000 km 200ee/
Disossembie
sumpli o n less
1000km more
and adiust
120 ee / 0.62 mile 200ee/
0.62 mile
l ub rica ti ng
oil. capo -
1500 ee oul
sta ndard
Adjust Ch eck with oil
city gouge
RC:Jr wheel output
16PS
morc 12 .5PS less Disassem b le (Max . output!
* 18PS more 14PS less
and adjust
Caster 62
0
Oul standard Exchange (Refe rential val uel
Trai l 85
0
out standard Exch an ge (Refe r en tia l value I
2. ENGINE
A. .cylinder, Cylinder Head
'"
"<'~
It
e m
Sl o!1d ord Repoiring limit Adjust in g Point Remarks
C ylinde r sleeve
Differ ence w it hin 0.01
0.05 more Put in boring
After baring, hon-
betw ee n
0.0003 0.00196 ing should be
.
::. ~m ax.
in. d ia .
enforced
. 'a nd min. i n.
dia.
Cylinder sleeve
In.
dia.
.
54.00 - 54.0 1 54 .10 mor e Put in bori ng After bo ring, hon -
:!~;~S,
2.1259 -2.1263 2.1 29
ing
shou ld be
'~~ . '
enforced -;.;.
: .
* 60.00 - 60.0 1 f60,lO
more
...
2.3622 - 2.3625 2.366
1
C ylinder barrel Heig ht 83.45-93.5 aut standard
. ·3.285 - 3.681
r
C yl i nde r sleeve Out. dia. .- ':: 0 '.02 - 62.03
, (Referential valuel
::;:1:2:441 - 2.442
*
:c "t7.02-67 .03
2.638 - 2.6387
19