Practical Note - Yamaha 33 1980 Owner's Manual

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(6) While the engine is still warm wipe off any dirt and grime on the engine.
NOTE: When starting and stopping the engine with the key switch "ON", the warning buzzer will
sound. This does not indicate engine trouble.
PRACTICAL NOTE:
READ "YANMAR OPERATiON MANUAL" CAREFULLY.
(1) Breaking In:
The new engine must be carefully broken in during the first 50 hours. Operate below 2,500
rpms.
After the breaking-in period, retighten any important nuts and bolts that are loose.
Change the lubrication oil and the oil filter element or at least clean it.
(2) Heeling Angles Under Sail and Power:
KEEP THE HEELING ANGLE OF THE BOAT LESS THAN 20 DEGREES, OTHERWISE
OVERHEATING OR SERIOUS DAMAGE OF THE ENGINE MAY RESULT.
(3) When the battery has not sufficient power by itself to start the engine, it may be started by
using the decompression lever.
(4) Bleeding (Air Venting) the Fuel System:
In the event of air entering the fuel system, it will be necessary to bleed the whole fuel system
before starting can be effected. Air in the fuel system can be either due to running out of fuel
or leakage on the suction side of the fuel supply line.
1) Pull out the knob for engine warm-up and place the control lever in the "half speed" posi
tion.
2) Open the fuel supply valve.
3) Loosen the air bleed bolt on the top of the second fuel filter by one and a half turns.
4) Move the priming lever of the fuel feed pump up and down. The fuel feed pump is
located under the alternator forward on the port side of the engine (see Fig. 23)
When bubbles stop coming out with the fuel, secure the bolt.
5) Loosen the air-bleed bolt on the fuel injection pump (see Fig. 23) by one and a half or two
turns. Move the priming lever up and down until ail the air bubbles out. Secure the bolt.
6) Put the control lever at FULL position.
Try to start the engine. In most cases the engine may start.
If not:
7) Loosen the high pressure pipe from the fuel injection pump. Turn the engine with the
starting motor, and at the same time tighten the cap nut of the high pressure pipe if fuel
comes out.
8) Put the decompression lever in the "No Compression" position and turn the starting
handle and make sure that the injection sound of the fuel is a strong high pitched "hiss".
(5) Cleaning the Fuel Filter:
Clean the fuel filter periodically. Replace the dirty element. Do not forget to bleed the filter
after cleaning.
(6) Cleaning the Bilge of the Fuel Tank:
Clean the bilge of the fuel tank every three months by using the bilge drain plug.
(7) Water Trap: (U.S.A. Model)
When the float reaches the red line drain out the water through the drain plug.