Blue Opal/Engine

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Notes for the engine, a Yanmar 3GM30F.

Tools

Area Item Fixing Driver
Engine Alternator Top bolt 14mm
Bottom bolt 12mm
Swing nut 12mm
Water Pump Top bolt 12mm
Bottom bolt 12mm

Starter Solenoid

To solve a starting issue, an automotive relay was installed. The correct relay will have four terminals numbered 85, 86, 30 and 87.

Make up a length of cable from the large screw on the solenoid (battery cable terminal) and connect this to #30. Remove white cable from small solenoid terminal and connect to #85.

Make up cable from #86 connect to engine block. Connect #87 to small terminal on the solenoid.

Terminals #85 & #86 actuate the relay and #30 & #87 power the solenoid.

-- https://www.cricalix.net/2023/05/13/relaying-a-solenoid/

Parts Cross-reference

Item Page Original Alternative 1 Notes
Primary fuel filter Racor R12P Fleetguard FS19627 Blue Opal's original filter housing was replaced with a Racor
Secondary fuel filter / fuel strainer 55 Yanmar 104500-55710 Orbitrade 8-55710
Oil filter 38 Yanmar 124450-35100

Yanmar 119660-35150

Yanmar 119305-35170

Yanmar 119305-35151

Blue Print ADS72101 The ADS72101 has a larger outer diameter, but fits. Filter is shared across 1/2/3GMs.

35100 appears to be unavailable. 35151 supersedes 35150, slightly smaller. 35170 found in spares on board. https://marineparts.ie/filter-assy-lub-oil/ (35170) https://marineparts.ie/oil-filter-rec119305-35151-yanmar/ (35151)

Page numbers reference the Yanmar Parts Catalog.

For fuel filters, https://www.fuelfilter-crossreference.com/convert/FLEETGUARD/FS19627 is a decent reference.

For oil filters, https://www.oilfilter-crossreference.com/convert/YANMAR/124450-35100 is a decent reference.

Filter type: Full-Flow Lube Spin-on
Thread measurement: 20x1.5mm
Outer diameter: 77 mm (Approx. 3.03")
Height: 86 mm (Approx. 3.39")

Inventory

Purpose Part number Count Notes
Impeller kit Johnson 09-810B / JIKJMP005 3 Yanmar water pump is a rebadge
Impeller Yanmar 128296-42070 1 Not a full kit
Primary fuel filter Fleetguard FS19627 3
Oil filter Yanmar 119305-35170 1
Oil filter BluePrint ADS72101 4
Thermostat gasket Yanmar 129350-49451 1 https://marineparts.ie/rec129350-49541/
Fresh water thermostat Yanmar 121750-49800 1
Fuel filter Orbitrade 8-55710 / 10450055710 3
Alternator belt Yanmar 25132-003700 1 https://www.svb24.com/en/v-belt-for-yanmar-2gm20f-3gm30f.html
Raw water belt Yanmar 104511-78780 0 https://www.svb24.com/en/yanmar-v-belt-for-seawater-pump-2-3-gm.html
Collar anode AV004 / 957000001805 5 25mm shaft,https://miscosrl.com/en/prodotto/anodo-a-collare-av004-asse-o-25mm/
Heads smell filter Vetus NSF16FES 1 4 in pack, https://webshop.vetus.com/en/product/nsf16fes-filter-element-for
Manual bilge kit Gusher Titan AK4400 1 Service kit, https://www.chmarine.com/whale-gusher-titan-service-kit/
Boiler anode FVSLANMG 1820A00 2 200mm boiler anode, https://www.svb24.com/en/quick-magnesium-anode-for-b3-bx-and-bxs-series-boilers.html