Yamaha TW200 Service Manual page 96

4-16
DISASSEMBLY
I
ENG
I' ..
I
BALANCER AND CRANKSHAFT
1. Remove:
- Balancer
CD
- Crankshaft ~
From crankcase (Right).
VALVE, ROCKER ARM AND CAMSHAFT
NOTE: _
-With the engine mounted, the valve, rocker arm
and camshaft can be maintained by removing
the following parts.
-Seat
-Fuel tank
- Cylinder head
- Before removing the internal parts (valve, valve
spring, spring seat, etc.) of the cylinder head,
the valve sealing should be checked.
1. Check:
- Valve sealing
Leakage at valve seat~ Inspect the valve
face, valve seat and valve seat width.
Refer to the "INSPECTION AND REPAIR-
VALVE SEAT" section.
Valve seat checking steps:
- Supply a clean solvent
CD
into the intake and
exhaust ports.
-Check the valve sealing. There should be no
leakage at the valve seats
~.