J/105 Owner Guide
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30
Bleeding The Engine
Reprinted from Mac Boring Service Bulletin:
This bulletin contains helpful information for bleeding the fuel system of a Yanmar Diesel and
other small diesels as well. Please post where your field service personnel can review.
Since the presence of air in the fuel system anywhere between the fuel tank and the injector
will lead to a no start or erratic running condition, always bleed the air from the system when
the fuel system is disassembled, filter changed or if run out of fuel.
1.
Make sure fuel tank off is in "on" position.
2.
Bleed the air from fuel filter. Loosen the air bleed screw at the top of the fuel filter body
and operate the manual handle the lift pump until the air bubbles completely expel in the
fuel flowing from the filter.
3.
Bleed the air from the fuel return pipe. Loosen the connector bolt of the fuel return pipe
installed on the fuel injector, and bleed the air by operating the manual handle of the lift
pump. (If there is more than one injector, bleed the one at the end of the line).
4.
Bleeding the air from the fuel line -‐ (line from the filter to the injector pump). Loosen the
air venting screw at the injection pump and operate the manual handle of the lift pump
until all the air bubbles are out.
5.
Bleed the air from the fuel injector. Loosen the nipple on the fuel injector side, set the
throttle to half and the decompression lever to the decompression position and crank
engine. When no more bubbles appear in the fuel flowing from the end of the injection
pipe, re-‐tighten the nipple.
THIS BULLETIN IS FOR INFORMATION ONLY AND NOT AN AUTHORIZATION FOR REPAIRS
Starting The Engine
1.
Turn the battery selector switch to ALL. Turn off all electronic instruments to avoid a
voltage spike to the instruments while cranking the engine.
2.
Make sure that the throttle control is in neutral, or advanced neutral.
3.
Turn the ignition key to the ON position (if so equipped). The engine-‐alarm buzzer will
sound and the warning lights for low oil pressure and charging will light up. (The alarm
and warning lights will continue until the engine starts or the key is turned off.)
4.
If the engine-‐alarm is working correctly, continue to turn key. Release immediately when
the engine starts. If the engine does not start in 10 seconds, turn off the key. Advance the
throttle slightly (in neutral), wait 10 seconds, and repeat steps 3 and 4.
5.
When the engine starts, the oil-‐pressure and charging warning light will go out and the
engine-‐alarm buzzer will stop. If they do not, stop the engine immediately.
Summary of Contents for 105
Page 1: ......
Page 2: ...J 105 Owner Guide 2 J 105 Owner Manual HIN Yacht Name Owner Name COPYRIGHT J BOATS INC 2012...
Page 16: ...J 105 Owner Guide 16 Diagrams Layouts Schematics Running Rigging Deck Hardware Layout...
Page 17: ...J 105 Owner Guide 17 Mainsheet Cunningham Diagram...
Page 18: ...J 105 Owner Guide 18 Steering System...
Page 19: ...J 105 Owner Guide 19 Fuel Exhaust System...
Page 20: ...J 105 Owner Guide 20 Thru Hull Seacock Locations...
Page 21: ...J 105 Owner Guide 21 Manual Fresh Water System...
Page 22: ...J 105 Owner Guide 22 Head Holding Tank Schematic...
Page 23: ...J 105 Owner Guide 23 12V DC Layout...
Page 24: ...J 105 Owner Guide 24 Battery Wiring System...
Page 25: ...J 105 Owner Guide 25 Lightning Bonding System...
