Yacht Manual DEHLER 32
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4. Description of inboard systems
4.1 Engine installation
The Dehler 32 is equipped with a Yanmar engine installation and Saildrive. The table shows
you the most important data. At the same time we would like to refer you to the extensive
information provided by Yanmar. As skipper, you must be familiar with the safety and
maintenance indications.
Manufacturer Yanmar Yanmar
Type 3YM20 3YM30
Number of cylinders 3 3
Cylinder capacity 855 cm
3
1115 cm
3
Rated power 16 kW / 22 PS 22 kW / 30 PS
rpm 3.600 U/min 3.600 U/min
Cooling Fresh water cooling with
heat exchanger
Reduction ratio 2,64: 1 2,64: 1
Saildrive gearbox SD20 SD20
Dry weight ca. 120kg ca. 123 kg
Three phase current generator
12 V 60A 12 V 60 A
Folding screw 16 x 12" 16 x 13"
According to the manufacturer there may be slight
differences in pitch and diameter
As regards the installation the engine compartment is insulated on partition bulkheads. The
engine is accessible if you remove the stairs of companionway. In addition you can open a
flap hatch in the shower room and in the rear cabin to get access to all the important
components of the engine. Oil dipstick is able to be controllrd though maintenance hatch in
portside stern cabine.
4.1.1 Exhaust system
The yacht is equipped with a wet exhaust system, i.e. cooling seawater is injected into the
exhaust outlet pipe, which cools the exhaust fumes. This mixture is taken downwards to a
silencer/water collector – mounted under the double berth. The pipe continues on towards the
stern and forms a swan’s neck in front of the starboard inner edge of the transom.
The exhaust pipe is made of synthetic rubber reinforced with a steel spiral. The pipe is heat-
resistant, although with certain limits. Do not interrupt the sea water supply. Attention must
be paid therefore to providing a continuous supply. The pipe is fixed at all connection points
with two clamps.
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