Installation Of Valves - TOHATSU MFS 4D Service Manual

4 stroke
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36) Installation of Valves

1.
Apply oil to valve guide and attach new valve stem seal
1.
Intake Side : Black
Exhaust Side : Green
Do not reuse the seal. Use new one.
4st OIL
4st
Assemble valve 3, valve spring seat 4, valve spring 5 and
2.
retainer 6 in this order, and then, push in the assembly by
using valve spring compressor attachment 8.
Valve Spring Compressor Attachment 8 :
P/N. 3AB-99076-0
· Valve spring can be put from any end.
· Place a piece of cloth 2 below cylinder head
to prevent valve from lowering.
With valve spring 5 being pushed in, use small screw driver
3.
with small amount of grease at the tip to put cotter 7.
Remove cylinder block from work bench. Tap valve 3 with
4.
plastic hammer to fix cotter 7 securely.
4st 4/5/6 2020
4st
4st OIL
1 8
8
7
1
2 2
5
7
6
5
4
3
5-43

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