Valves - Yamaha TT600R Service Manual

ENGINE DISASSEMBLY

VALVES

NOTE:
The valves may be inspected with the engine
installed by removing the following parts.
•
Seat
•
Fuel tank
•
Exhaust pipe
•
Carburetor
•
Cylinder head cover
•
Cylinder head
1. Check:
•
Valve seal
Leakage from valve seats' Inspect the
valve surface, the seat and seat width.
See section "VALVE SEAT INSPECTION
AND REPAIR".
NOTE:
Check the valve seal before assembling the inter-
nal parts of the cylinder head (valves, valve
springs, spring retainer etc).
Inspection steps:
•
Pour clean solvent (1) into the intake and
exhaust ports.
•
Check the valve seal. There must be no blow-
bys from the valve seats (2).
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ENG