7-67
POWR
Power unit
8. Recheck the valve seat contact area of
the valve. See “Checking the valve seat”
(7-64).
Checking the cylinder head anode
1. Check the anodes. Replace if eroded.
Clean if there is grease, oil, or scales.
NOTICE: Do not apply grease, oil, or
paint to the anodes.
Assembling the cylinder head
Do not reuse a valve seal, always replace
it with a new one.
1. Install a new valve seal 1 onto the valve
guide.
2. Install the valve 2, valve spring seat 3,
valve spring 4, and valve spring retainer
5 in this order, and then install the spe-
cial service tools 6 and 7.
3. Compress the valve spring, and then
install the valve cotters 8.
4. Tap the valve spring retainer lightly using
a plastic hammer to set the valve cotters
8 securely.
Valve lapper 1: 90890-04101
1
1
Valve spring compressor 6: 90890-04019
Valve spring compressor attachment 7:
90890-06320
6
7
5
4
2
3
8
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