Honda CB77 - Cam Shaft Valve Cam Chain

' I t e m
I
Standard
I Repei,i'9 limit
Adjos';'9 Poiot I
Remarks
I t em
I
Standard
I Repeid'9 l imi t I Adjusti'9 poiot I
Remarks
Piston
ring
Width
2.4 - 2.6
2.0 less
Ex change
Com chain
Type DK - 219
10ili
0.0944 -
0.1 02 10.07871
*
2.78- 2.795
Exchange
0.109 -0 .110
Thickness
2.78-2.795
2.7 less
Exchar,ge
0.109 - 0.110
0.106
*
2. 6-2.8
*
2.5 less
Ex change
0.0944 - 0.110 0.0984
Tension
0.7 - 0.9 kg 0.5 kg less
Ex ch ange Tangential tension
Length
723.0 - 723.8
728.0
Exchange
28.464 - 28.496 28.661 more
Exhaust valve Thickness
1.0 0.5 less
0.0393
I
0.00196
Exhaust valve (Steml Out. dia. 6.96-6.97
,
6. 94 less
R ectjfy or
0.274 - 0.274
0.273
Exchange
Exhaust
valve Angle
90-91
0
OUI-slanda rd
Exchange
ISeat facel
1.543- 1.984105 1.1021bs
*
0.9 -1.15 kg
.
0.7 kg less
Exchange
~
1.984-2.53Ibs
1.5431bs
End gap
0.1-0.3
0.8 more
Rectify the
When a ttaching
Exhaust
valve
Overall
88.7 4 - 88.7 6
89.4
leSs
Exchange
length
3.493 - 3.494 3.519
Inlet valve Thickness
1. 0 0.5 less
Exchange
0.039
I
0.019
0.00393- 0.0118
0.0314
narrow ri ng
Exchange the
wide ring
Piston ring & groove
Clearan ce
0.045- 007
0.15 more
Exc h ange
Inlet valve ISteml Out. dia. 6.98-6.99
6.96 less
Ex change
0.274 - 0.275
0.274
I
or rectify
Inl et valve
ISeatl
Angle
90
0
-9 1 0
out-standa rd I
Ex cha nge
ITopl
0.0059
*
0.04-0.07 i< 0.15 more
Exchange
*
0.0059
Piston ri ng & groove
Clearan ce
0.01-0.0 4
0.1 more
Exchange
(Second I
0.00393
Piston ring & groove
Clearance
0.0 1- 004
0 .1 more
Exchange
10ili
0.00393
Piston ri ng oversize
O versize
0.25
3 category of
0.00984
0.25 ove rsize
Inlet valve Overall
89.96-89.98
89.6 less
Ex change
lenglh
3.541 -3 .542
I
3.521
Valve spring f lnn er! Free length
37.54
I
36.0 less Ex change
1.477
1.417
Diagonal
0.8 less
1.5 more
Exchange
d
egree
Tension
7.6 - 8.4 kg
60 kg less Ex chan ge
18.9 -20' kg 16.0 kg less
I
16.754-18.518
I
13.227
i
41.667 - 44.31 3
I
35.273
C. Cam Shaft Valve Cam Chain
Valve spri ng tOuler! Free length
43.36
42.0 less Excha nge
1. 707
I
1.653
1 t e m
I
Standard
I Repei,i '9 limit
Ad i u5fing poi :"! 1 I Remarks
Diagonal 0.8 less
,
1 .5 more
Exchange
degree
1
Com shaft
I
Out. dia.
19.996 - 20.009
19.95 less
I
Exchange
lBearing partl
0.787 -0.787
0.785
Cam (Bearing parl l
Height
In 31.67-31.71
31.4
Exc honge
1.246 - 1.248
I
1.236
I
Ex.30.54 - 30.58
30.2 less
I
1.202 - 1.203
1.188
,
Max. lift
Com shaft
lift
In
5.69
,
,
I
,
0.118
,
Ex.
4.56
0.179
Tension
16.9- 18. 1 kg
15.0 kg less Exchange
34.4 - 34.6 kg 32.0 kg less I
37.257 -29.9 03Ib, 33.0691bs le" l
7 5.838-7 6.279Ib, 70.547 Ibs less '
Exhaust valve guide
In . dia.
7.0 -7. 0 1
7.05 more
Exchange
0.275 - 0.2759
0. 2775
Inlet valve
guide
In. dia.
7.0-701
7.05 more
Ex change
0.275 - 0.2759
0.2775
Touch width
1. 0
20 more
I
Rectify
Repair
of cy linder
Valve seat
!
0.039
0
.0 8
head
Cam sprocke,t
Nos. of
32
Rocker
o,m In. dia.
13.0 -1 3.027
13.1 more
Ex change
complete
teeth
, I
I
1
Bottom dia ,
74.766
74.2
less
Exchange
2.943
2.921
0.51 1- 0. 512
0.515
I
Rocker
arm shaft
Out. die.
12.966 -1 2.984
12.9
less
Ex change
I
tRacker orm partl 0.510- 0.51 1
0.507
24
25