Valve Seat Reconditioning - Honda Motor EU65is Manual De Instrucciones

cap.13 EU65is 6500is 07.12.17 5:05 PM ページ13-6
• VALVE GUIDE REAMING
For best results, be sure the cylinder head is at room
temperature before reaming valve guides.
1) Coat the reamer and valve guide with cutting oil.
2) Rotate the reamer clockwise through the valve guide the
full length of the reamer.
3) Continue to rotate the reamer clockwise while removing it
from the valve guide.
TOOL:
Valve guide reamer, 6.612 mm
4) Thoroughly clean the cylinder head to remove any cutting
residue.
5) Check the valve guide bore, it should be straight, round and
centered in the valve guide. Insert the valve and check
operation. If the valve does not operate smoothly, the guide
may have been bent during installation. Replace the valve
guide if it is bent or damaged.
6) Check the valve guide-to-stem clearance (P. 13-4).

3. VALVE SEAT RECONDITIONING

1) Thoroughly clean the combustion chamber and valve seats
to remove carbon deposits.
Apply a light coat of Prussian Blue or erasable felt-tipped
marker ink to the valve face.
2) Insert the valve, and snap it closed against its seat several
times. Be sure the valve does not rotate on the seat. The
transferred marking compound will show any area of the
seat that is not concentric.
Follow the instructions of the valve seat cutter
manufacturer.
Standard
1.1 mm (0.04 in)
TOOLS:
Valve seat cutter, 45° 40 mm
Valve seat cutter, 45° 33 mm
Valve seat cutter, 32° 38.5 mm
Valve seat cutter, 32° 33 mm
Valve seat cutter, 60° 30 mm
Valve seat cutter, 60° 42 mm
Cutter holder, 6.6 mm
13-6
07984-ZE20001
Service limit
2.0 mm (0.08 in)
07780-0010500
07780-0010800
07780-0012400
07780-0012900
07780-0014000
07780-0014400
07781-0010202
[1]
VALVE GUIDE
REAMER, 6.612 mm
07984-ZE20001