2-3
E
1Silencer
Prevents water from getting into the engine
and reduces air intake noise.
2Spark plugs/caps
3Electrical box
Protects electrical components from water.
4Spark plug lead
5Muffler6Fuel tank
7Oil tank
8Fuel filter
9Flush hose connector
Use to flush the engine cooling water pas-
sages.
0Battery
E_F0M-70.book Page 3 Wednesday, June 23, 2004 4:52 PM
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EJU01355
Periodic maintenance chart
The following chart gives general guidelines for periodic maintenance. However, depend-
ing on your operating conditions maintenance may need to be performed more frequently.
(
) This mark indicates maintenance that you may do yourself.
(
❍) This mark indicates work to be done by a Yamaha dealer.
MAINTENANCE INTERVAL
INITIALTHEREAFTER
EVERYPA G E
10
hours50
hours100
hours100
hours200
hours
ITEM
6
months12
months12
months24
months
Spark plug Inspect, clean, adjust
4-14
Lubrication points Lubricate
4-15
Intermediate housing Lubricate❍
*1
*2
*2 4-16
Fuel system Inspect❍❍
4-10
Fuel filter Check, clean, replace❍❍
4-11
Fuel tank Inspect, clean❍
4-11
Oil injection system Inspect, clean❍❍
—
Carburetor setting Inspect, adjust❍❍❍
4-20
Trolling speed Inspect, adjust
4-20
Carburetor throttle shaft Inspect❍❍
—
Cooling water passages Flush
*3 4-1
Bilge strainer Clean
—
Impeller Inspect❍❍
—
Jet thrust nozzle angle Inspect, adjust
/❍
/❍
4-13
Throttle cable Inspect, adjust❍❍❍
4-13
Choke cable Inspect, adjust❍❍
4-17
Stern drain plugs Inspect, replace❍❍
3-8
Battery Inspect ❍❍
4-18
Rubber coupling Inspect❍
—
Engine mount Inspect❍
—
Nuts and bolts Inspect❍❍❍
—
*1: Grease quantity: 33.0–35.0 cm3 (1.11–1.18 oz)
*2: Grease quantity: 6.0–8.0 cm3 (0.20–0.27 oz)
*3: After every use
E_F0M-70.book Page 9 Wednesday, June 23, 2004 4:52 PM
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EJU01383
Inspecting the fuel system
WARNING@ Gasoline is highly flammable and explo-
sive. A fire or explosion can cause
severe injury or death. Shut off the
engine. Do not smoke. Avoid spilling
gasoline.
@
Check the fuel system for leaks, cracks,
or malfunctions. If any problem is found, do
the necessary repair or replacement as
required. If repair is necessary, consult a
Yamaha dealer.
Check:
Carburetor for leakage.
Fuel pump for malfunction or leakage.
Fuel tank for water or dirt.
Fuel tank for damage, cracks or leakage.
Fuel hose joint for leakage.
Fuel hose for cracks or other damage.
Fuel filter for leakage.
Fuel cock for leakage.
Air vent check valve for leakage.
Fuel tank filler cap for damage.
WARNING@ Failure to check for and repair any fuel
leakage may result in fire or explosion.
@
E_F0M-70.book Page 10 Wednesday, June 23, 2004 4:52 PM
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EJU01953
Fuel filter
This watercraft is equipped with a one-
piece, disposable fuel filter 1. The fuel filter
should be replaced after the initial 10 hours
or first month of operation and every
200 hours or 24 months thereafter, or if
water is found in the filter. Have a Yamaha
dealer replace the fuel filter if necessary.
WARNING@ Do not try to replace the fuel filter your-
self. An incorrectly installed filter can
leak gasoline, which could lead to fire or
explosion. If necessary, have a Yamaha
dealer replace the fuel filter.
@
EJU01841
Fuel tank
Check the fuel tank 1 for leakage or
water in the tank. If water is found in the fuel
system or if the fuel tank needs to be
cleaned, have a Yamaha dealer service the
watercraft.
E_F0M-70.book Page 11 Wednesday, June 23, 2004 4:52 PM
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EJU01116
Troubleshooting
If you have any trouble with your watercraft, use this section to check for the possible
cause.
If you cannot find the cause, or if the procedure for replacement or repair is not described
in this Owner’s/Operator’s Manual, have a Yamaha dealer perform the necessary service.
EJU01367
Troubleshooting chart
TBC-F0P7ETROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
startStarter motor does not turn over
Engine shut-
off switchClip not in place Install clip
2-9
Fuse Burned out Replace the fuse and
check wiring4-21
Battery Run down Recharge 4-18
Poor terminal connec-
tionsTighten as required
4-18
Terminal corroded Clean 4-5
Starter motor Faulty Have serviced by
Yamaha dealer—
Starter motor turns over
Fuel cock Turned to “OFF”Turn the fuel cock to
“ON”2-8
Fuel Empty Refill as soon as
possible3-3
Stale or contaminated Have serviced by
Yamaha dealer4-10
Fuel tank Water or dirt present Have serviced by
Yamaha dealer4-11
Spark plug Fouled or defective Clean or replace 4-14
Spark plug cap Not connected or loose Connect properly 4-14
Crankcase Filled with water Crank engine with plug
out until clean5-8
Fuel filter Clogged or water
pooledHave serviced by
Yamaha dealer4-11
Choke Knob moves back on
its ownTighten the choke knob
adjusting nut4-17
E_F0M-70.book Page 1 Wednesday, June 23, 2004 4:52 PM
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Engine runs irregu-
larly or stallsFuel Empty Refill as soon as
possible3-3
Stale or contaminated Have serviced by
Yamaha dealer4-10
Choke Knob pulled Push fully in 2-9
Fuel filter Clogged or water
pooledHave serviced by
Yamaha dealer4-11
Fuel tank Water or dirt present Have serviced by
Yamaha dealer4-11
Spark plug Fouled or defective Replace 4-14
Incorrect heat range Replace 4-14
Gap incorrect Adjust 4-14
Spark plug cap Loose Connect properly 4-14
Cracked, torn, or dam-
agedReplace
—
Electrical
wiringLoose connection Tighten or connect
properly—
Carburetor Incorrect idle adjust-
mentAdjust idle
4-20
Clogged Have serviced by
Yamaha dealer—
Warning light blinksEngine oil level Empty Refill immediately 3-4
Oil filter clogged Clean 4-12 TROUBLE POSSIBLE CAUSE REMEDY PAGE
E_F0M-70.book Page 2 Wednesday, June 23, 2004 4:52 PM
5-3
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Wate rcr af t slow or
loses powerCavitation Jet intake clogged Clean 5-4
Impeller damaged or
wornHave serviced by
Yamaha dealer—
Engine over-
heatedJet intake clogged Clean
5-4
Fuel filter Clogged Have serviced by
Yamaha dealer4-11
Spark plug Fouled or defective Replace 4-14
Incorrect heat range Replace 4-14
Gap incorrect Adjust 4-14
Spark plug
capsLoose Connect properly
4-14
Electrical
wiringLoose connection Tighten or connect
properly—
Fuel Stale or contaminated Have serviced by
Yamaha dealer4-10
Bilge Water in bilge Drain 3-8 TROUBLE POSSIBLE CAUSE REMEDY PAGE
E_F0M-70.book Page 3 Wednesday, June 23, 2004 4:52 PM
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EJU01125
Index
2-stroke engine oil ................................... 3-2
A
Adjusting the carburetor ........................ 4-20
Adjusting the choke cable ..................... 4-17
Adjusting the trolling speed ................... 4-20
Approval label of Emission control
certificate ................................................. 1-2
B
Battery .............................................. 3-9, 4-5
Beaching the watercraft ........................ 3-32
Bilge ........................................................ 3-8
Bleeding the oil injection pump ............. 4-21
Boarding alone ...................................... 3-24
Boarding and starting in deep water ..... 3-24
Boarding with passengers ..................... 3-25
C
Capsized watercraft .............................. 3-27
Choke knob ............................................. 2-9
Cleaning and adjusting the spark
plugs...................................................... 4-14
Cleaning the jet intake and impeller ........ 5-4
Cleaning the watercraft ........................... 4-6
Connecting the jumper cables................. 5-6
Cooling water pilot outlet .............. 2-11, 3-13
Cruising limitations ................................ 1-10
D
Docking the watercraft .......................... 3-32
E
Emergency procedures ........................... 5-4
Emission control information
(For Canada only) ................................... 1-2
Engine break-in ..................................... 3-14
Engine compartment ............................... 3-6
Engine overheat warning system .......... 2-13
Engine serial number .............................. 1-1
Engine shut-off cord (lanyard) ............... 3-12
Engine shut-off switch ............................. 2-9
Engine stop switch .................................. 2-9
Enjoy your watercraft responsibly ......... 1-17F
Filling the fuel tank .................................. 3-3
Filling the oil tank .................................... 3-4
Finger grip ............................................. 2-12
Fire extinguisher .................................... 3-10
Flushing the cooling system .................... 4-1
Front seat ................................................ 2-5
Front storage compartment ................... 2-15
Fuel and oil.............................................. 3-1
Fuel and oil systems ............................... 3-7
Fuel cock knob ........................................ 2-8
Fuel filter ............................................... 4-11
Fuel system ............................................. 4-4
Fuel tank ............................................... 4-11
Fuel tank filler cap ................................... 2-7
G
Gasohol ................................................... 3-2
Gasoline .................................................. 3-1
Getting to know your watercraft ............ 3-20
Glove compartment ............................... 2-16
H
Handgrip ................................................ 2-12
Hazard information ................................ 1-14
Hood........................................................ 2-6
Hull and deck .......................................... 3-6
Hull Identification Number (HIN).............. 1-1
I
Identification numbers ............................. 1-1
Important labels ....................................... 1-3
Inspecting and adjusting the throttle
cable...................................................... 4-13
Inspecting the battery ............................ 4-18
Inspecting the fuel system ..................... 4-10
Inspecting the jet thrust nozzle angle .... 4-13
Inspecting the oil injection system ......... 4-12
J
Jet unit................................................... 3-12
Jumping the battery ................................. 5-5
L
Label location .......................................... 1-3
Learning to operate your watercraft ...... 3-20
Leaving the watercraft ........................... 3-19
E_F0M-70.book Page 1 Wednesday, June 23, 2004 4:52 PM