Yamaha RS90GTZ Service Manual page 20

SPECIAL TOOLS
• Bearing driver 40 mm
P/N: YM-04058
• Middle driven shaft bearing driver
P/N: 90890-04058
This tool is used to install the water pump seal.
• Mechanical seal installer 30 – 10 mm
P/N: 90890-01557
This tool is used to install the water pump seal.
• Universal magneto & rotor holder
P/N: YU-01235
• Rotor holding tool
P/N: 90890-01235
This tool is used to hold the camshaft sprockets and oil pump
driven gear.
• Valve guide remover (4.5 mm)
P/N: YM-04116
• Valve guide remover (ø4.5)
P/N: 90890-04116
This tool is used to remove or install the valve guides.
• Valve guide installer (4.5 mm)
P/N: YM-04117
• Valve guide installer (ø4.5)
P/N: 90890-04117
This tool is used to install the valve guides.
• Valve guide reamer (4.5 mm)
P/N: YM-04118
• Valve guide reamer (ø4.5)
P/N: 90890-04118
This tool is used to rebore the new valve guides.
• Valve lapping tool
P/N: YM-A8998
• Valve lapper
P/N: 90890-04101
This tool is needed to remove and install the valve lifters.
• Piston ring compressor
P/N: YM-08037
90890-05158
This tool is used to compress the piston rings when installing the
piston into the cylinder.
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