Remove the spark plugs from the cylinder head.
Install the tappet hole protector into the valve lifter bore.
Tappet hole protector 07HMG-MR70002
An equivalent tool can easily be made from a 35-mm plastic film container as shown.
25 mm I D. (when compressed)
15 mm b mm
Remove the valve spring cottcrs using the special tools as shown.
Valve spring compressor 07757-0010000 Valve spring compressor attachment
VALVE SPRING COMPRESSOR
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