Description
25
Engine compartment
124
9
8
5
3
6 7
10
1Engine cover
2 Air filter case
3 Water separator (page 31)
4 Fuel tank
5 Battery (page 68)
6 Electrical box
7 Spark plug/Spark plug cap/Ignition coil
8 Removable watertight storage compart-
ment (page 55)
9 Engine oil filler cap (page 60)
10 Dipstick (page 60)
UF3J70E0.book Page 25 Wednesd ay, October 9, 2013 2:07 PM
Maintenance
98
*1: Whichever comes first.
*2: Check every 200 hours.
Perform the pre-operation checks and post-operation checks before performing periodic
maintenance.
Air filter elementCheck for damage and
dirt
√
—
Air intake hoses Check for damage, and
check clamps
√
—
Throttle body Lubricate throttle valves √—
Exhaust system Check for exhaust leak-
age, and check hoses and
clamps √
—
Breather hose Check breather hose and
clamps
√
—
Impeller Check for bends, dam-
age, and foreign material
√
—
Jet thrust nozzle Check movement, and lu-
bricate
√
—
Jet vacuum bilge Check hoses for clogs
and damage, check
clamps, and clean bilge
strainer
√
—
Electric bilge pump Check operation, check
hoses for damage, check
clamps, and clean bilge
pump strainer
√
—
Stern drain plugs Check O-rings √—
Anode Check for corrosion, and
clean
√
*2 —
Valve clearance Check and adjust √ *2 —
Rubber coupling Check for cracks, inden-
tations, looseness, and
noise √
—
Engine mount Check for damage and
peeling
√
—
Item Operation
Initial Thereafter every
Page
10 hours 50 hours
or 12
months *1 100
hours or 12
months *1 200
hours or 24
months *1
UF3J70E0.book Page 98 Wednesd ay, October 9, 2013 2:07 PM
Trouble recovery
103
Watercraft slow or
loses powerShift lever Not completely shift-
ed into forward posi-
tion Push lever forward
until it stops 32
Watercraft
operation
mode Low RPM Mode acti-
vated
Deactivate Low RPM
Mode 35
Cavitation Jet intake clogged Clean 104 Impeller damaged or
worn Have serviced by
Yamaha dealer
104
Engine over-
heat warning Engine speed reduc-
tion control activated Clean jet intake and
cool engine
44
Oil pressure
warning Engine speed reduc-
tion control activated Add oil
44
Spark plug Fouled or defective Have serviced by Yamaha dealer—
Incorrect heat range Have serviced by Yamaha dealer —
Gap incorrect Have serviced by Yamaha dealer —
Spark plug
cap Not connected or
loose Have serviced by
Yamaha dealer
—
Electrical wir-
ing Loose connection Have serviced by
Yamaha dealer —
Fuel Stale or contaminat- ed Have serviced by
Yamaha dealer
—
Incorrect octane
number Use correct fuel
58
Air filter Clogged Have serviced by Yamaha dealer—
Oil buildup Have serviced by Yamaha dealer —
Throttle lever Faulty Have serviced by Yamaha dealer—
TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF3J70E0.book Page 103 Wednesd
ay, October 9, 2013 2:07 PM
