4-26 ENGINE TOP END
Valve Seat Repair
Repair the valve seat with the valve seat cutters.
Special Tools - Valve Seat Cutter Holder, 4.5: 57001-1330
Valve Seat Cutter Holder Bar: 57001-1128
Special Tools - Valve Seat Cutter, 45° - 27.5: 57001-1114
Valve Seat Cutter, 32° - 25: 57001-1118
Valve Seat Cutter, 60° - 30: 57001-1123
Special Tools - Valve Seat Cutter, 32° - 22: 57001-1206
Valve Seat Cutter, 45° - 22: 57001-1205
Valve Seat Cutter, 67.5° - 22: 57001-1207
If the manufacturer's instructions are not available, use
the following procedure.
Seat Cutter Operating Care
1. This valve seat cutter is developed to grind the valve for
repair. Therefore the cutter must not be used for other
purpose than seat repair.
2. Do not drop or shock the valve seat cutter, or the dia-
mond particles may fall off.
3. Do not fail to apply engine oil to the valve seat cutter
before grinding the seat surface. Also wash off ground
particles sticking to the cutter with washing oil.
Do not use a wire brush to remove the metal particles
from the cutter. It will take off the diamond particles.
4. Setting the valve seat cutter holder in position, operate
the cutter in one hand. Do not apply too much force to
the diamond position.
Prior to grinding, apply engine oil to the cutter and dur-
ing the operation, wash off any ground particles sticking
to the cutter with washing oil.
5. After use, wash the cutter with washing oil and apply a
thin layer of engine oil before storing.
Marks Stamped on the cutter
The marks stamped on the back of the cutter [A] represent
60° ........................... Cutter angle [B]
.......................... Outer diameter of cutter [C]