Yamaha Fz6 N Service Manual

ENGINE
3-8
11. Install: Fuel tank Refer to FUEL TANK on page 7-1.
Seat Refer to GENERAL CHASSIS on page 4-
1.
EAS4S81012
ADJUSTING THE EXHAUST GAS VOLUME 
(FZ6-N/FZ6-NA/FZ6-S/FZ6-SA)
NOTE:
Be sure to set the CO density level to stan-
dard, and then adjust the exhaust gas volume.
1. Turn the main switch to “OFF” and set the  engine stop switch to “ON”.
2. Simultaneously press and hold the  “SELECT” and “RESET” buttons, turn the 
main switch to “ON”, and continue to press 
the buttons for 8 seconds or...

ENGINE
3-9
2. Simultaneously press and hold the “SELECT” and “RESET” buttons, turn the 
main switch to “ON”, and continue to press 
the buttons for 8 seconds or more.
NOTE:
“dI” appears on the clock LCD.
3. Press the “SELECT” button to select the CO adjustment mode “Co” “1” or the diag-
nostic mode “dI”.
4. After selecting “Co”, simultaneously press  the “SELECT” and “RESET” buttons for 2 
seconds or more to execute the selection.
NOTE:
The selected cylinder number appears on the 
clock LCD.
 To...

ENGINE
3-10
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a. Turn the idle adjusting screw “1” in direction “a” or “b” until the specified engine idling 
speed is obtained.
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4. Adjust: Throttle cable free play Refer to ADJUSTING THE THROTTLE 
CABLE FREE PLAY on page 3-10.
EAS20630
ADJUSTING THE THROTTLE CABLE FREE 
PLAY
NOTE:
Prior to adjusting the throttle cable free play, 
the engine idling speed and throttle bodies 
synchronization should be adjusted properly.
1. Check: Throttle...

ENGINE
3-11
b. Turn the adjusting nut “2” in direction “a” or 
“b” until the specified throttle cable free 
play is obtained.
c. Tighten the locknut
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4. Install:  Battery Refer to GENERAL CHASSIS on page 4-
1 and CHECKING AND CHARGING THE 
BATTERY on page 8-114.
 Air filter case Refer to GENERAL CHASSIS on page 4-
1.
 Fuel tank Refer to FUEL TANK on page 7-1.
Seat
Refer to GENERAL CHASSIS on page 4-
1.
WARNING
EWA4S81001
After adjusting the throttle cable free play,...

ENGINE
3-12
Normal color is medium-to-light tan.
6. Clean:
 Spark plug (with a spark plug cleaner or wire brush)
7. Measure:
 Spark plug gap “a” (with a wire thickness gauge)
Out of specification  → Regap.
8. Install:  Spark plugs
NOTE:
Before installing the spark plug, clean the 
spark plug and gasket surface.
9. Connect: Spark plug caps
10. Install:  Radiator lower hose bracket bolt
 Radiator lower bolt
Refer to RADIATOR on page 6-1.
EAS20710
MEASURING THE COMPRESSION PRES-
SURE
The following...

ENGINE
3-13
Out of specification → Refer to steps (c) 
and (d).
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a. Set the main switch to “ON”.
b. With the throttle wide open, crank the 
engine until the reading on the compres-
sion gauge stabilizes.
WARNING
EWA4S81003
To prevent sparking, ground all spark plug 
leads before cranking the engine.
CAUTION:
ECA13340
Before removing the spark plugs, use com-
pressed air to blow away any dirt accumu-
lated in the spark plug wells to prevent it 
from falling into the...

ENGINE
3-14
CAUTION:
ECA4S81007
 Engine oil also lubricates the clutch and the wrong oil types or additives could 
cause clutch slippage. Therefore, do not 
add any chemical additives or use engine 
oils with a grade of CD “a” or higher and 
do not use oils labeled “ENERGY CON-
SERVING II” “b” or higher.
 Do not allow foreign materials to enter the 
crankcase.
NOTE:
Before checking the engine oil level, wait a few 
minutes until the oil has settled.
4. Start the engine, warm it up for several...

ENGINE
3-15
b. Lubricate the O-ring “3” of the new oil filter cartridge with a thin coat of engine oil.
CAUTION:
ECA13390
Make sure the O-ring “3” is positioned cor-
rectly in the groove of the oil filter car-
tridge.
c. Tighten the new oil filter cartridge to speci-fication with an oil filter wrench.
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6. Check:
 Engine oil drain bolt gasket 
7. Install:  Engine oil drain bolt (along with the new gasket)
8. Fill:  Crankcase
(with the specified amount of the recom-
mended...

ENGINE
3-16
4. Install: Oil pressure gauge “1”
 Adapter “2”
5. Measure:  Engine oil pressure (at the following conditions)
Out of specification  → Adjust. 6. Install:
 Main gallery bolt “1”
EAS20870
ADJUSTING THE CLUTCH CABLE FREE 
PLAY
1. Check:
 Clutch cable free play “a” Out of specification  → Adjust.
2. Adjust:  Clutch cable free play
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Handlebar side
a. Turn the adjusting bolt “1” in direction “a” or  “b” until the specified clutch cable free play 
is obtained....

ENGINE
3-17
NOTE:
If the specified clutch cable free play cannot be 
obtained on the handlebar side of the cable, 
use the adjusting nut on the engine side.
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Engine side
a. Loosen the locknuts “1”.
b. Turn the adjusting nut “2” in direction “a” or 
“b” until the specified clutch cable free play 
is obtained.
c. Tighten the locknuts.
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EAS20950
CLEANING THE AIR FILTER ELEMENT
1. Remove: Seat
Refer to GENERAL...