Yamaha WR45OFR service manual Combination of cylinder head and valve lifter, Yellow, Black

VALVES AND VALVE SPRINGS

ENG

a

b

Combination of cylinder head and valve lifter

1.Combination:

For this combination, match the paint color on the cylinder head with that on the valve lifter according to the chart below.

Combination

Cylinder head mark	Valve lifter mark
a (color)	b (color)
Blue	Blue
Yellow	Yellow
Purple	Black

NOTE:

When you purchase a cylinder head, you can- not designate its size. Choose the valve lifter that matches the above chart.

ASSEMBLY AND INSTALLATION

1.Apply:

●Molybdenum disulfide oil

Onto the valve stem and valve stem seal.

2.Install:

●Valves 1

●Valve spring seats 2

● Valve stem seals 3 New

●Valve springs 4

●Valve spring retainers 5

NOTE:

●Make sure that each valve is installed in its original place, also referring to the painted color as follows.

Intake (middle) a: blue

Intake (right/left) b: gray

Exhaust: not paint

●Install the valve springs with the larger pitch c facing upward.

dSmaller pitch

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