Bearings And Oil Seals; Inspection And Repair; Cylinder Head - Yamaha TZR50 '03 Service Manual

DISMANTLING THE ENGINE /

INSPECTION AND REPAIR

BEARINGS AND OIL SEALS

NOTE:
• It is not necessary to take out the bearings
and oil seals unless these are damaged. See
the section on "BEARINGS AND OIL SEALS"
in CHAPTER 1.
1. Take out:
• Use a screwdriver to take out the seal.
• Place a piece of wood under the screwdriver
so as not to damage the crankcase
2. Take out:
NOTE:
• To facilitate removal and installing first heat
up the crankcase to roughly 95 ~125ºC. Heat
it up slowly to this temperature.
INSPECTION AND REPAIR

CYLINDER HEAD

1. Eliminate:
NOTE:
Do not use any sharp tool and avoid damaging
or scratching the :
• Spark plug thread
• Cylinder head
2. Inspect
4-14
• The oil rings
CAUTION
• The bearings
• Any carbon deposited.
Use a rounded scrap
• Cylinder head (inside)
Remains of any material deposited /rust
remove
• Deformation of the cylinder head
Out of specification
ENG
Sand down