Maintenance Interval Chart - Yamaha F90D Service Manual

Maintenance interval chart

Use the following chart as a guideline for general maintenance.
Adjust the maintenance intervals according to the operating conditions of the outboard motor.
Item
Anodes (external)
Anodes (internal)
Battery
Cooling water passages
Top cowling
Fuel filter
(can be disassembled)
Fuel system
Gear oil
Lubrication points
Engine idle speed
(EFI models)
PCV (Pressure Control Valve)
Power trim and tilt unit
Propeller and cotter pin
Shift link/shift cable
Thermostat
Throttle link/throttle cable/
throttle pick-up timing
Water pump
Engine oil
Oil filter
Spark plugs
Timing belt
NOTE:
When operating in salt water, turbid or muddy water, the engine should be flushed with clean water
after each use.
Item
Timing belt
Valve clearance (DOHC)
NOTE:
When using lead or high-sulfur gasoline, checking valve clearance may be required more frequently
than every 500 hours.
6D81G11
Special service tools / Maintenance interval chart
Initial
Remarks
10 hours
(1 month)
Check/replace
Check/replace
Check/charge
Clean
Check
Check/replace
Check
Change
Lubricate
Check/adjust
Check
Check
Check/replace
Check/adjust
Check
Check/adjust
Check
Check/change
Change
Clean/adjust/
replace
Check/replace
Remarks
500 hours
(2.5 years)
Replace
Check/adjust
Every
50 hours 100 hours 200 hours
(3 months) (6 months) (1 year)
Every
1,000 hours
(5 years)
3
1
Refer to
page
3-14
3-14
2
3-14
3-8
3-3
3-3
3
3-3
3-12
3-15
3-8
4
5-38
3-11
3-13
3-10
5
3-7
3-8
6-9
6
3-4
3-5
3-6
3-6
7
8
Refer to
page
5-13
9
5-10
3-2