STEYR MOTORS Marine Engine 2012 Series, Service Manual

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Cooling System
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05.00.06 Component checks of engine cooling system
1. Hoses and clamps, drain plug etc.
For all models: no special tool required.
Control works:
Check all external components of cooling system for leakage, wear and damages.
Check all connections for tightness. Check hoses for cracks, breaks or wear.
Repair works:
Repair or exchange
2. Thermostat
No special tools required.
Control works:
As a standard, an 80° C thermostat is
used for the vehicle engine. Check
thermostat for correct model and correct
rated output, corrosion, limited mobility or
broken spring.
Repair works:
No repair possible. Exchange thermostat.
Test procedure:
Thermostat can be placed in a pot with
water. This water can be heated up
(oven). While heating up the water, the
temperature should be measured. While
the temperature increases, the thermostat
must change its position closing resp.
opening the flow ports.