Yamaha YW125Y_ Utility Trailer User Manual


 
ENG
5-30
1
2
3
EAS00245
INSTALLING THE VALVES
The following procedure applies to all of the
valves and related components.
1. Deburr:
8valve stem end
(with an oil stone)
2. Lubricate:
8valve stem 1
8valve stem seal 2
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
VALVES AND VALVE SPRINGS
b
a
1
2
3. Install:
8valve 1
8valve stem seal 2
New
8valve spring 3
8valve spring retainer 4
(into the cylinder head)
TIP
Install the valve spring with the larger pitch a
facing up.
b Smaller pitch
4. Install:
8valve cotters 1
TIP
Install the valve cotters by compressing the
valve spring with the valve spring compressor
2 and the valve spring compressor attachment
3.
3
2
4
1
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