Montesa COTA 4RT RACE REPLICA Owner's Manual page 85

1
(1) SEAT WIDTH
Use a 45˚ cutter, remove any roughness or irregularities
from the seat.
Reface the seat with a 45˚ cutter whenever a valve guide
is replaced.
Tools:
Seat cutter, 35 mm 07780–0010400
Seat cutter, 33 mm 07780–0010800
Cutter holder, 5.0 mm 07781–0010400
or equivalent commercially available
45º
Use a 32˚ flat cutter, remove 1/4 of the existing valve
seat material.
Tools:
Flat cutter, 33 mm
Flat cutter, 28 mm
Cutter holder, 5.0 mm
or equivalent commercially available
32º
07780–0012900
07780–0012100
07781–0010400
Engine servicing
Use a interior cutter, remove 1/4 of the existing valve
seat material.
Tools:
Interior cutter, 37.5 mm 07780–0014100
Interior cutter, 30 mm 07780–0014000
Cutter holder, 5.0 mm 07781–0010400
or equivalent commercially available
60º
4-27 4-27