Yamaha XS850G Specifications download pdf (Page 5)

"B"

"C"

seat

width

"D" marginthickness

Stemdiameter

(O.D.)

Guide diameter (I.D.)

C

I

ea

rance

(Coldengine)

"

A

"

headdiameter

0.1

6~0.20mm

36

+

0.2

1.3 ±0.15mm

1.2 ± 0.2mm

7

+

.010mm

-.025mm

7

+

.019mm

-.010mm

I

"B"

facewidth2.26 ± 0.57mm

"

B

"

facewidth

"C"

seat

width

"D" margin thickness

Stemdiameter (O.D.)

2.26 ± 0.57mm

1.3 ± 0.15mm

1.2± 0.2mm

7+.025mm

-.040m m

I

Stem

-

to

-

guideclearance

I

0.020~0.041mm

I

EXHAUST

CI

ea

rance

(Coldengine)0.21 ~0.25mm

"

A

"

headdiameter

31

+

0.2mm

Guide diameter (I.D.)

7

+

.019mm

St

em

-t

o

-g

uid

e

clea

ra

nce

0.035~0.059mm

CylinderandPiston

Cylinder material

Cylinder liner

Standardboresizehtandard

Cylindertaperlimit

Cylinderout

-

of

-

roundlimit

Pistonclearancehtandard

maximum

maximum

PistonRings

Design

Endgap(installed)

Side clearance

Aluminum

Pressed

in;

special

castiron

68.00~68.02mm

/

(2.677~2.678in.)

68.10mm(2.681)

0.05mm(.002in.)

0.01mm(.0004in.)

0.050~0.055mm

/

(.0020~.0022 in.)

0.1mm(.004in.)

Oil

0.04-0.08mm0.03-0.07mm

-0.4mm-0.4mm0.2~0.9mm

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