Yamaha XV17ASZ Service Manual download pdf (Page 73)

– 66 –

ENG

CRANKSHAFT AND CONNECTING RODS

4. Select:

• big end bearings (P

~ P

)

NOTE:

• The numbers a stamped into the crankshaft

web and the numbers b on the connecting

rods are used to determine the replacement

big end bearing sizes.

•“P

” ~ “P

” refer to the bearings shown in the

crankshaft illustration.

▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼

For example, if the connecting rod “P

” and the

crankshaft web “P

” numbers are “6” and “2”

respectively, then the bearing size for “P

” is:

▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲

“P

” (connecting rod) – “P

” (crankshaft

web) = 6 – 2 = 4 (green)

BIG END BEARING COLOR CODE

1blue

2 black

3brown

4 green

5 yellow

5. Measure:

• crankshaft journal diameter a

Out of specification → Replace the crank-

shaft.

NOTE:

Measure the diameter of each crankshaft jour-

nal at two places.

Crankshaft journal diameter

49.968 ~ 49.980 mm

(1.967 ~ 1.968 in)

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 82 83

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Yamaha XV17ASZ Service Manual Page 73

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