PERIODIC MAINTENANCE Adjusting Propeller Shaft Alignment
Every 50 Hours of Operation
The flexible engine mounts are compressed a little during initial engine operation and may cause misalignment between the engine and the propeller shaft.
After you complete the initial 50 hour maintenance procedures, perform the following procedures every 50 hours thereafter or monthly, whichever comes first.
After the first 50 hours of operation, the alignment should be checked and readjusted if necessary. This is considered normal maintenance and the adjustment requires specialized knowledge and techniques. Consult your authorized Yanmar marine dealer or distributor.
• Draining Fuel Filter / Water Separator • Checking Battery Electrolyte Level
Draining Fuel Filter / Water Separator
3JH4E and 4JH4AE (Attach to Hull) (2)
(1)
0004564
Figure 10 1. 2. 3.
JH4 Series Operation Manual
Close the fuel cock of the fuel tank. Loosen the drain plug (Figure 10, (1)) of water separator and drain off any water or dirt collected inside. After draining, tighten the air bleed screw (Figure 10, (2)).
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