Yanmar 1GM, Operation Manual

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III. Engine installation
[3-1.1 Inspection after unpacking
During unpacking be careful not to break the engine base. Check the following points:
1) Have any nuts or bolts become loose or fallen off?
2) Have any parts become rusty?
3) Is there any water inside the engine?
4) Has any part of the engine been broken, chipped, or crushed?
5) Are any of the accessory parts/ items broken or defective?
[3-2.1 Preparation of the engine foundation plate
The installation angle will differ with the vessel configuration and installation location of the
engine. The most suitable installation angle is 8 degrees and the maximum installation angle is
15 degrees. If it is greater than this, horsepower loss will increase and vessel speed will drop. In
addition, abnormal wear of parts will occur and engine performance will be adversely affected.
[3-3.1 Engine installation
1) For the engine installation, be sure to use the flexible rubber mount.
Yanmar prepared the flexible mounts which match the respective engine characteristics as a
standard accessory.
1. Lock Nut
2. Jack Nut
3. Rubber Mount
4. Indication No. (50, 70, 75, 100)