Mobile Maintenance

From their painstaking design to their meticulous construction, Yamaha outboards are manufactured to provide you with years of enjoyment. However, they live in one of the harshest environments imaginable. High load, high-RPM operation, extreme temperatures and humidity, saltwater, sun, even long periods of non-use can all exact a heavy toll. And it’s not just Yamaha outboards. All outboards face these same challenges. Regular maintenance is important in helping your outboard meet the demands of these challenging environments, and only you can make sure it happens.

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In the Maintenance section of your Yamaha Service Manual, these Maintenance Intervals are provided.

Maintenance Interval Chart 1

ItemActions20 hours
(3 months)
100 hours
(1 year)
300 hours
(3 years)
500 hours
(5 years)
Anodes (externalCheck/Replace

Anodes (cylinder head exhaust passage)Check/Replace

Anodes (cyclinder head, cylinder block thermostat portion, oil cooler cover, exhaust guide)Replace

Battery (electrolyte level terminal)Check.Charge/Replace

Cooling Water leakageCheck/Replace

Cowling lock leverCheck

Engine starting condition/NoiseCheck

Engine idle speed/NoiseCheck

Engine oilReplace

Engine oil filterReplace

Fuel filter (can be disassembled)Check/Replace

Fuel hose (high pressure)Check/Replace

Fuel hose (low pressure)Check/Repalce

Fuel PumpCheck/Repalce

Fuel/Oil leakageCheck

Gear oilRepalce

Greasing pointsLubricate


Impeller/Water pump housingCheck/Repalce

OCV filterRepalce

PTT unitCheck

Propeller/Propeller nut/Cotter pinCheck/Replace

Spark PlugsCheck/Repalce

Ignition coils/Ignition couil leadsCheck/Repalce

Pilot WaterCheck


Timing BeltCheck/Repalce

Valve clearanceCheck/Adjust

Water InletCheck

Engine start switch/Main switch/Engine start/stop button/Engine shut-off switchCheck/Repalce

Wiring harness connections/Lead coupler connectionsCheck/Replace

Yamaha meter/GuageCheck

Maintenance Interval Chart 2

Every 1,000 hours
Exhaust guide/Exhaust manifoldCheck/Repalce
Timing beltRepalce