2001 YAMAHA GP1200 spark plugs

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Page 27 of 119

YAMAHA GP1200 2001  Owners Manual 2-4
E
1Spark plugs/Spark plug caps
2Electrical box
Protects electrical components from water.
3Flush hose connector
Use to flush the engine cooling water pas-
sages.
4Spark plug lead
5Muffler
6Fuel fi

Page 79 of 119

YAMAHA GP1200 2001  Owners Manual E
4
EJU00515
MAINTENANCE AND 
CARE
Storage....................................................... 4-1
Flushing the cooling system ................... 4-1
Lubrication...................................

Page 82 of 119

YAMAHA GP1200 2001  Owners Manual 4-3
E
EJU00528a
Lubrication
1. Remove the spark plugs and pour
approximately one tablespoon of oil into
each cylinder.
2. Grease the spark plug threads and rein-
stall the spark plugs.
3. Crank the en

Page 87 of 119

YAMAHA GP1200 2001  Owners Manual 4-8
E
EJU00536
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

Page 93 of 119

YAMAHA GP1200 2001  Owners Manual 4-14
E
EJU00552a
Cleaning and adjusting the 
spark plugs
The spark plug is an important engine
component and is easy to inspect. The con-
dition of the spark plug can indicate some-
thing about the co

Page 111 of 119

YAMAHA GP1200 2001  Owners Manual 5-8
E
EJU00604a
Submerged watercraft
If the watercraft is submerged or flooded
with water, follow the procedure below and
consult a Yamaha dealer as soon as possi-
ble. Failure to do so may result in

Page 114 of 119

YAMAHA GP1200 2001  Owners Manual 6-1
E
EJU00609
Index
2-stroke engine oil ................................... 3-4
A
Adjusting the carburetor ........................ 4-20
Adjusting the trolling speed ................... 4-20
Adjustin