stop start YAMAHA GP800R 2021 User Guide

3-16
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2. Turn the fuel cock knob to the “ON” posi-
tion.
NOTE:
Before starting the watercraft, after it has
been sitting, remove the fuel tank filler cap
to release any built-up pressure in the tank
due to fuel expansion.
3. Attach the clip 1 to the engine shut-off
switch 2. Also, attach the engine shut-
off cord 3 to your left wrist.
WARNING
Check that the engine shut-off cord is not
frayed or broken, and keep it free from
the handlebars so the engine stops if the
operator falls off. The engine shut-off
cord may not pull free if wrapped around
the handlebars when the operator falls
off, allowing the watercraft to continue to
run and cause an accident.
NOTE:
It is not possible to start the engine with the
clip removed from the engine shut-off
switch.
4. Move the choke lever all the way in the
direction of the arrow to start a cold
engine.
NOTE:
The choke should not be used when the
engine is warm.

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EJU00463a
Stopping the engine
To stop the engine, release the throttle
lever, and then push the engine stop switch
(red button).
WARNING
You need throttle to steer. Shutting off
the engine can cause you to hit an obsta-
cle you are attempting to avoid. A colli-
sion could result in severe injury or
death.
EJU00005n
Leaving the watercraft
If leaving the watercraft, remove the
engine shut-off cord to reduce the chance of
accidental starting or unauthorized use by
children or others.

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1. Put the watercraft on land in a horizontal
position.
2. Open the flushing hose connector cap 1,
and then inser t the garden hose adapter
2
into the flushing hose connector 3 and
turn it until it is securely connected.
3. Connect the garden hose adapter to a
water tap using a hose.
4. Start the engine, and then immediately
turn the water supply on until water flows
out continually from the cooling water
pilot outlet.
5. Run the engine at idling speed for about
3 minutes watching the engine condition.
If the engine stops while flushing, turn
the water supply off immediately and
repeat the above steps.
6. Turn the water supply off, and then force
the remaining water out from the cooling
passages by alternately squeezing, and
releasing the throttle lever for 10 to
15 seconds.
7. Stop the engine.
8. Remove the garden hose adapter and
secure the cap.

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EJU00573
Adjusting the carburetor
The carburetor is a vital part of the engine
and requires very sophisticated adjustment.
Most adjusting should be left to a Yamaha
dealer who has the professional knowledge
and experience to perform it. However, the
operator may adjust the trolling speed as
part of the usual maintenance routine.
CAUTION:
The carburetor was set at the Yamaha
factory after many tests. If the settings
are disturbed by someone who does not
have the necessary technical knowledge,
poor engine performance and damage
may result.
EJU00577a
Adjusting the trolling speed
1. Put the watercraft in the water.
2. Start the engine and warm it up for 1 or
2 minutes. Using a diagnostic tachome-
ter or, if necessary, the tachometer in the
multifunction information center, adjust
the engine speed to specification.
3. Turn the throttle stop screw 1 clockwise
to increase engine speed if necessary.
Turn it counterclockwise to decrease
engine speed if necessary.
Trolling speed: 1,250–1,350 r/min

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EJU00609
Index
2-stroke engine oil ................................... 3-4
A
Adjusting the carburetor ........................ 4-21
Adjusting the trolling speed ................... 4-21
Adjusting the Yamaha Adjustable
Sponson (Y.A.S.) .................................. 4-23
Approval label of Emission control
certificate ................................................. 1-2
B
Battery .............................................. 3-8, 4-5
Beaching the watercraft ........................ 3-30
Bilge ........................................................ 3-7
Bleeding the oil injection pump ............. 4-22
Boarding alone ...................................... 3-23
Boarding and starting in deep water ..... 3-23
Boarding with a passenger.................... 3-24
Bow down.............................................. 2-12
Bow up .................................................. 2-12
C
Capsized watercraft .............................. 3-25
Caution labels ......................................... 1-7
Choke lever ............................................. 2-8
Cleaning and adjusting the spark
plugs...................................................... 4-15
Cleaning the jet intake and impeller ........ 5-4
Cleaning the watercraft ........................... 4-6
Connecting the jumper cables................. 5-6
Cooling water pilot outlet .............. 2-10, 3-12
Cruising limitations ................................ 1-10
D
Docking the watercraft .......................... 3-30
E
Emergency procedures ........................... 5-4
Emission control information ................... 1-2
Engine break-in ..................................... 3-13
Engine compartment ............................... 3-6
Engine overheat warning indicator ........ 2-18
Engine overheat warning system .......... 2-13
Engine serial number .............................. 1-1Engine shut-off cord (lanyard) ............... 3-11
Engine shut-off switch ............................. 2-8
Engine stop switch .................................. 2-8
Enjoy your watercraft responsibly ......... 1-15
F
Filling the fuel tank .................................. 3-3
Filling the oil tank .................................... 3-4
Fire extinguisher ...................................... 3-9
Flushing the cooling system .................... 4-1
Front storage compartment ................... 2-19
Fuel and oil.............................................. 3-1
Fuel and oil systems ............................... 3-6
Fuel cock knob ........................................ 2-7
Fuel filter ............................................... 4-11
Fuel meter ............................................. 2-17
Fuel system ............................................. 4-4
Fuel tank ............................................... 4-11
Fuel tank filler cap ................................... 2-6
Fuel warning indicator ........................... 2-18
G
Gasohol ................................................... 3-2
Gasoline .................................................. 3-1
Getting to know your watercraft ............ 3-19
Glove compartment ............................... 2-20
H
Handgrip ................................................ 2-14
Hazard information ................................ 1-13
Hood........................................................ 2-6
Hour meter ............................................ 2-17
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 ............................ 4-19
Inspecting the fuel system ..................... 4-10
Inspecting the oil injection system ......... 4-12
Inspecting the QSTS mechanism .......... 4-14
Inspecting the steering cable................ 4-13
J
Jet unit................................................... 3-11
Jumping the battery ................................. 5-5

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L
Label location .......................................... 1-3
Learning to operate your watercraft ...... 3-19
Leaving the watercraft ........................... 3-18
Limitations on who may operate the
watercraft ................................................ 1-9
Location of main components ................. 2-1
Lubrication............................................... 4-3
Lubrication points .................................. 4-16
M
Maintenance and adjustments ................ 4-7
Multifunction information center ... 2-15, 3-12
O
Oil filter .................................................. 4-12
Oil tank .................................................. 4-12
Oil tank filler cap...................................... 2-6
Oil warning indicator.............................. 2-18
Operating your watercraft...................... 3-19
Operation .............................................. 3-13
Operation of controls and other
functions .................................................. 2-5
Operation requirements ........................ 1-11
Other labels ............................................. 1-8
Owner’s/Operator’s Manual and
tool kit ...................................................... 4-8
P
Periodic maintenance chart..................... 4-9
Post-operation checks........................... 3-31
Pre-operation check list........................... 3-5
Pre-operation check points ..................... 3-6
Pre-operation checks .............................. 3-5
Primary Identification (PRI-ID) number ... 1-1
Q
Quick Shift Trim System (QSTS)
selector.................................................. 2-11
R
Replacing the fuse ................................ 4-22
Reset button .......................................... 2-16
Riding watercraft with a passenger ....... 3-20
Rough water operation .......................... 3-30
S
Safe boating rules ................................. 1-15
Safety information ................................... 1-9Seat ......................................................... 2-5
Specifications ........................................ 4-24
Speedometer......................................... 2-16
Starting and boarding in shallow
water ..................................................... 3-22
Starting from a dock .............................. 3-22
Starting the engine ................................ 3-15
Starting the watercraft ........................... 3-21
Start switch.............................................. 2-9
Steering system ...........................2-10, 3-10
Stopping the engine .............................. 3-18
Stopping the watercraft ......................... 3-29
Storage.................................................... 4-1
Storage compartments .......................... 2-19
Submerged watercraft ............................. 5-8
Switches ................................................ 3-12
T
Tachometer ........................................... 2-16
Throttle .................................................. 3-10
Throttle lever ........................................... 2-9
Towing the watercraft .............................. 5-7
Transporting .......................................... 3-33
Troubleshooting ...................................... 5-1
Troubleshooting chart ............................. 5-1
Turning the watercraft ........................... 3-27
W
Warning labels ........................................ 1-4
Watercraft characteristics ...................... 1-14
Water separator ...................................... 3-7
Y
Yamaha Adjustable Sponson (Y.A.S.) .. 2-20