ROUTINE MAINTENANCE - Japan Yanmar 3GM30FC

ENGINE OIL

1. Yanmar 15W-40, API-CD

2. 2.8 quarts (2.7 L).

3. Every 100 hours or annually in Fall (Manual = 150 hrs or annually, website = 250hrs)

4. Filter – Yanmar 119660-35150. (Manual says every 300 hrs)

5. Procedure:

a. Warm engine in gear.

b. Put emesis basin and absorbent pads under filter to catch oil.

c. Remove filter with wrench.

d. Suck out oil from dip stick.

e. Coat o-ring on filter with new oil.

f. Fill engine to fill line of dip stick, then add a bit more for filter.

g. Start engine, put in gear, check for leaks at filter.

h.  Turn off engine, check oil level at dipstick.

6. Supplies – heavy duty trash bag, heavy duty paper towels, pads, emesis basin

TRANSMISSION OIL

1. SAE 30W, API-CD Class.

2. Change same time as engine oil (Manual = 150 hrs, website = 250 hrs)

3. Suck out old oil, fill with about 0.3 quart (350 ml).

4. If needed, drain plug is on port side, bottom aft of case.

5. Check the oil level without screwing in the cap. Oil level must be between the upper and lower limit marks.

PRIMARY FUEL FILTER – R15T

1. Every 100 hrs or at least annually in fall

2. Shutoff fuel valve at top of tank.

3. CAREFULLY remove Raycor bowl with adsorbent pads underneath.

4. Dump out fuel, wipe out bowl with rag.

5. Dab oil or fuel on small side of filter to lube. Best to use lithium grease.

6. Large o-ring has tapered side to housing, flat to element. Coat with fuel.

7. Hand tighten bowl to filter. Tighten filter to fuel line with wrench.

SECONDARY FUEL FILTER – 104500-55710

1. Replace every 250 hrs or at least annually in fall

2. Tap thread with screwdriver and hammer (if needed) to get started to open.

3. Do not need new o-ring. CAUTION – don’t cross-thread when putting back on.

4. Tap thread with screwdriver and hammer to tighten.

BLEED FUEL LINE

1. Open fuel line at top of tank.

2. Low pressure side:

a. #1 bleed on top of filter. Pull bolt out. May need to replace copper crush washer. Pump fuel lift until fuel comes out (catch with rag).

b. #2 under forward end of heat exchanger. Back off screw 3-4 turns. Pump slowly until air is out and pure fuel is running (catch with rag).

3. High pressure side:

a. Bleed only if necessary.

b. Unloosen 3 nuts on injectors, crank engine with starter until fuel is coming out all 3 injector openings.

IMPELLER

1. Remove the pump mounting bolts and slip off the drive belt. Tilt the pump housing so you can work on the cover plate

2. Use 7mm wrench or socket to remove cover bolts, remove all traces of paper gasket (both surfaces)

3. Remove, inspect, and replace (as needed) impeller

4. Reassemble, using Lanocote on all bolt threads