TOHATSU MFS 2 Service Manual

5-32
Power Unit
4st 2/2.5/3.5 2007
35) Correction of Valve Seat
1. Use valve seat cutter 1 (commercially available item) to
correct valve seat.
2. Turn 45 degree cutter clockwise to cut valve seat surface
to make it smooth.
30û
45û
60û
1
45˚
a
30˚
b
a Carbon build-up or uneven surface.
3. Use 30 degree cutter to adjust contact position of valve
seat upper end.
b Width before correction
Be careful not to over-cut valve seat. Turn valve
seat cutter while pushing down evenly.
4. Use 60 degree cutter to adjust contact position of valve
seat lower end.
60˚
b
b Width before correction
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TOHATSU MFS 2 Specifications

General

Brand	TOHATSU
Model	MFS 2
Category	Engine
Language	English