4-19
E
EJU01109
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.
@
EJU01303
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, adjust the engine speed to specifica-
tion.
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
E_F1N-70.book Page 19 Wednesday, July 18, 2001 3:28 PM
6-2
E
M
Maintenance and adjustments ................ 4-7
Mixing fuel and oil ................................... 3-3
O
Operating positions ............................... 3-25
Operating your watercraft...................... 3-19
Operation .............................................. 3-13
Operation of controls and other
functions .................................................. 2-3
Operation requirements ........................ 1-10
Other labels ............................................. 1-7
Owner’s/Operator’sManualandtoolkit ...... 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
R
Recommended equipment .................... 1-12
Replacing the fuse ................................ 4-20
Rough water operation .......................... 3-30
S
Safe boating rules ................................. 1-14
Safety information ................................... 1-8
Specifications ........................................ 4-23
Standing ................................................ 3-25
Starting the engine ................................ 3-15
Starting the watercraft ........................... 3-21
Start switch.............................................. 2-6
Steering pole .................................. 2-8, 3-10
Steering system ............................. 2-7, 3-10
Stopping the engine .............................. 3-18
Stopping the watercraft ......................... 3-29
Storage.................................................... 4-1
Storage pouch ....................................... 2-10
Submerged watercraft ............................. 5-7
Switches ................................................ 3-12T
Throttle .................................................. 3-10
Throttle lever ........................................... 2-6
Towing the watercraft .............................. 5-6
Transporting .......................................... 3-33
Troubleshooting ...................................... 5-1
Troubleshooting chart ............................. 5-1
Turning the watercraft ........................... 3-27
W
Warning labels ........................................ 1-4
Watercraft characteristics ...................... 1-13
Water separator ...................................... 3-7
E_F1N-70.book Page 2 Wednesday, July 18, 2001 3:28 PM
