Maintenance
EMU34445
Maintenance chart 1
TIP:
●Refer to the sections in this chapter for explanations of each
●The maintenance cycle on these charts assume usage of 100 hours per year and regular flushing of the cooling water passages. Maintenance frequency should be adjusted when op- erating the engine under adverse conditions such as extended trolling.
●Disassembly or repairs may be necessary depending on the outcome of maintenance checks.
●Expendable or consumable parts and lubricants will lose their effectiveness over time and through normal usage regardless of the warranty period.
●When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should be flushed with clean water after each use.
The “
” symbol indicates the 
” symbol indicates work to be carried out by your Yamaha dealer.
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Item | Actions |
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20 hours | 100 hours | 300 hours | 500 hours | |||
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| (3 months) | (1 year) | (3 years) | (5 years) | |
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Anode(s) (external) | Inspection or replace- |
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ment as necessary |
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Anode(s) (cylinder | Inspection or replace- |
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head, thermostat cov- |
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ment as necessary |
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er) |
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Anodes (exhaust cover, |
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cooling water passage | Replacement |
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cover, Rectifier Regula- |
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tor cover) |
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Cooling water leakage | Inspection or replace- |
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ment as necessary |
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Cowling lock lever | Inspection |
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Engine starting condi- | Inspection |
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tion/noise |
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Engine idling | Inspection |
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speed/noise |
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Fuel filter (can be dis- | Inspection or replace- |
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assembled) | ment as necessary |
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Fuel line(High pres- | Inspection |
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sure) |
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Fuel line(High pres- | Inspection or replace- |
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sure) | ment as necessary |
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Fuel line(Low pres- | Inspection |
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sure) |
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Fuel line(Low pres- | Inspection or replace- |
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sure) | ment as necessary |
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