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Assembly And Installation; Ym-04019/90890-04019; Ym-04108/90890-04108 - Yamaha YZ426F 1999 Manuel D'atelier

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VALVES AND VALVE SPRINGS
Valve lifter
1. Inspect:

ASSEMBLY AND INSTALLATION

1. Apply:
2. Install:
NOTE:
Make sure that each valve is installed in its
original place, also referring to the embossed
mark as follows.
Install the valve springs with the larger pitch
a facing upwards.
b Smaller pitch
3. Install:
NOTE:
While compressing the valve spring with a
valve spring compressor 1 and attachment 2
install the valve cotters.
4 - 33
Valve lifter
Scratches/damage → Replace both lift-
ers and cylinder head.
Molybdenum disulfide oil
Onto the valve stem and valve stem
seal.
Valves 1
Valve spring seats 2
Valve stem seals 3
Valve springs 4
Valve spring retainers 5
Intake (right/left): "5BE"
Intake (middle): "5BE"
Exhaust: "5BE"
Valve cotters
Valve spring compressor:

YM-04019/90890-04019

Attachment:

YM-04108/90890-04108

ENG
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Ce manuel est également adapté pour:

Yz426fm 1999Yz426lc 1999