COOLING SYSTEM
6LPA Service Manual
7-11
Thermostat Components
12/05
© 2007 Yanmar Marine International
9. Check that the valve spring strongly presses
the against the seat (Figure 7-12, (1)) when the
thermostat is closed completely. If not, replace
the thermostat.
Thermostat Installation
1. Install the thermostat on the cylinder block.
2. Install a new gasket to the thermostat (P/N
119773-49570), ensure the jiggle valve
(Figure 7-13, (1)) faces upwards.
Figure 7-13
Figure 7-13
3. Install the thermostat cover (Figure 7-14).
Figure 7-14
Figure 7-14
4. Secure the rubber hose with the hose band.
5. Fill with engine coolant (fresh water).
6. Start the engine and check for leakage.
(1)
0005
3
41
0005
3
42