Periodic Maintenance
CAUTION! Establish a periodic maintenance plan according to the Sail-Drive
application and make sure you perform the required periodic maintenance at
intervals indicated. Failure to follow these guidelines will impair the Sail-Drive’s
safety and performance characteristics, shorten the Sail-Drive's life and may affect
the warranty coverage on your Sail-Drive.
The Importance of Periodic Maintenance
Sail-Drive deterioration and wear occur in proportion to the length of time the Sail-Drive has
been in service and the conditions it is subjected to during operation. Periodic maintenance
prevents unexpected downtime, reduces the number of accidents due to poor Sail-Drive
performance and helps extend the life of the Sail-Drive.
The Importance of Daily Checks
The Periodic Maintenance Table assumes that the daily checks are performed on a regular
basis. Make a habit of performing daily checks before the start of each operating day. See
Filling With Lubricating Oil - SD20, SD50 and SD50-4T on page 19, Checking the Instrument
Panel Alarm System on page 20 and Engine Cooling Water on page 29, and refer to the
Operation Manual for your engine.
Keep a Log of Sail-Drive Hours and Daily Checks
Keep a log of the number of hours the Sail-Drive is run each day and a log of the daily checks
performed. Also note the date, type of repair (e.g., replaced bearings), and parts used for
any service needed between the periodic maintenance intervals. Failure to perform periodic
maintenance will shorten the life of the Sail-Drive.
Yanmar Replacement Parts
Yanmar recommends that you use genuine Yanmar parts when replacement parts are
needed. Genuine replacement parts help ensure long Sail-Drive life.
Tools Required
Before you start any periodic maintenance procedure, make sure you have the tools you
need to perform all of the required tasks.
Ask Your Authorized Yanmar Marine Dealer or Distributor For Help
Our professional service technicians have the expertise and skills to help you with any
maintenance or service related procedures.
Daily and periodic maintenance is important to keep the Sail-Drive in good operating
condition. The following is a summary of maintenance items by periodic maintenance
intervals. Periodic maintenance intervals vary depending on Sail-Drive application and are
hard to establish definitively. The following should be treated only as a general guideline.
Note: These procedures are considered normal maintenance and are performed at the
owner’s expense.
PERIODIC MAINTENANCE
SD Operation Manual
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© 2009 Yanmar Marine International