2009 YAMAHA BANSHEE 350 torque

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TIP


A special wrench can be obtained at a Yamaha
dealer to make this adjustment.

The spring preload setting is determined by
measuring distance A, shown in the illustration.
The shorter distance A is, the higher the spring
preload; the longer distance A is, the lower the
spring preload. With each complete turn of the
adjusting nut, distance A is changed by 1.5 mm
(0.06 in).3. Tighten the locknut to the specified torque.
1. Locknut
2. Spring preload adjusting nut
1
2
(a)(b)

1. Distance A
Spring preload setting:
Minimum (hard):
Distance A = 213.5 mm (8.4 in)
Standard:
Distance A = 220.5 mm (8.7 in)
Maximum (soft):
Distance A = 228.5 mm (9.0 in)
Tightening torque:
Locknut:
54 Nm (5.4 m·kgf, 39 ft·lbf)
1

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NOTICE

ECB00080
Always tighten the locknut against the adjust-
ing nut, and then tighten it to the specified
torque.
Rebound damping force
Turn the adjusting dial in direction (a) to increase
the rebound damping force and thereby harden
the damping, and in direction (b) to decrease the
rebound damping force and thereby soften the
damping.
Compression damping force
Turn the adjusting knob in direction (a) to increase
the compression damping force and thereby hard-
en the damping, and in direction (b) to decrease
the compression damping force and thereby soft-
en the damping.

1. Rebound damping force adjusting dial
1(a) (b)

Rebound damping setting:
Minimum (soft):
20 click(s) in direction (b)*
Standard:
12 click(s) in direction (b)*
Maximum (hard):
3 click(s) in direction (b)*
* With the adjusting dial fully turned in direc-
tion (a)

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The service information included in this manual
and the tools provided in the owner’s tool kit are in-
tended to assist you in the performance of preven-
tive maintenance and minor repairs. However,
additional tools such as a torque wrench may be
necessary to perform certain maintenance work
correctly.
TIP

If you do not have the tools or experience required
for a particular job, have a Yamaha dealer perform
it for you.
WARNING

EWB01850
Never modify this ATV through improper in-
stallation or use of accessories, as it may
cause changes in handling, which in some sit-
uations could lead to an accident. All parts and
accessories added to this ATV should be gen-
uine Yamaha or equivalent components de-
signed for use on this ATV and should be
installed and used according to instructions. If
you have questions, consult an authorized
Yamaha ATV dealer.

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stead, have a Yamaha dealer check the ATV.
3. Check each spark plug for electrode erosion
and excessive carbon or other deposits, and
replace it if necessary.
To install a spark plug
1. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.
2. Clean the surface of the spark plug gasket
and its mating surface, and then wipe off any
grime from the spark plug threads.
3. Install the spark plug with the spark plug
wrench, and then tighten it to the specified
torque.TIP

If a torque wrench is not available when installing Specified spark plug:
NGK/BR8ES
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
1. Spark plug gap
Tightening torque:
Spark plug:
20 Nm (2.0 m·kgf, 14 ft·lbf)

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a spark plug, a good estimate of the correct torque
is 1/4–1/2 turn past finger tight. However, the spark
plug should be tightened to the specified torque as
soon as possible.
4. Install the spark plug cap.
EBU23343
Transmission oil
The transmission oil level should be checked be-
fore each ride. In addition, the transmission oil
must be changed at the intervals specified in the
periodic maintenance and lubrication chart.
To check the transmission oil level
1. Place the ATV on a level surface.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Wait a few minutes until the oil settles, remove
the oil filler cap, wipe the dipstick off with a
clean rag, insert it back into the oil filler hole
(without screwing it in), and then remove it
again to check the oil level.
TIP

The transmission oil should be between the mini-
mum and maximum level marks.
4. If the oil is at or below the minimum level mark,
add sufficient oil of the recommended type to
raise it to the correct level.
5. Insert the dipstick into the oil filler hole, and
then tighten the oil filler cap.
1. Dipstick
2. Maximum level mark
3. Minimum level mark
4. Transmission oil filler cap
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To change the transmission oil
1. Place the ATV on a level surface.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Place an oil pan under the transmission to col-
lect the used oil.
4. Remove the oil filler cap and the drain bolt to
drain the oil from the transmission case.
5. Install the drain bolt, and then tighten it to the
specified torque.6. Refill with the specified amount of the recom-
mended transmission oil, and then install and
tighten the oil filler cap.NOTICE

ECB00430

In order to prevent clutch slippage (since the
transmission oil also lubricates the clutch),
do not mix any chemical additives. Do not
use oils with a diesel specification of “CD” or
oils of a higher quality than specified. In ad-
dition, do not use oils labeled “ENERGY
CONSERVING II” or higher.

Make sure that no foreign material enters the
crankcase.
1. Transmission oil drain bolt
1

Tightening torque:
Transmission oil drain bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
Recommended transmission oil:
See page 10-1.
Oil quantity:
1.5 L (1.59 US qt, 1.32 Imp.qt)

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6. Disconnect the hose on the coolant reservoir
side and drain the coolant from the coolant
reservoir.7. After draining the coolant, thoroughly flush the
cooling system with clean tap water.
8. Replace the coolant drain bolt washers if they
are damaged, and then tighten the coolant
drain bolts to the specified torque.
9. Connect the coolant reservoir hose.
10. Pour the recommended coolant into the reser-
1. Coolant reservoir cap
1

1. Coolant reservoir hose
2. Coolant reservoir
Tightening torque:
Coolant drain bolt:
14 Nm (1.4 m·kgf, 10 ft·lbf)
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13. Remove the float and needle valve.
14. Change the main jet and the jet needle clip po-
sition.
TIP


Optional main jets can be obtained at a Yamaha
dealer.

After the jet needle clip position is changed, the
throttle cables may need to be adjusted.Assembling and installing the carburetors
Assemble and install both carburetors by the fol-
lowing steps.
1. Install the needle valve and float.
2. Install the float chamber by installing the
screws.
3. Install the carburetor and tighten the joint
screws.
4. Assemble the throttle valve.
5. Install the mixing chamber cap, and then tight-
en it securely to the specified torque.
6. Install the mixing chamber cap securing plate
by installing the screw.NOTICE

ECB00501
Be sure to match one of the projections on the
carburetor cap with one of the slots on the se-
curing plate. If the securing plate does not
match a projection, tighten the carburetor cap
until they align. Do not loosen the carburetor
cap.
1. Float
2. Needle valve
3. Main jet
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Tightening torque:
Mixing chamber cap:
4 Nm (0.4 m·kgf, 2.9 ft·lbf)