Yamaha XV1700P, XV1700PC. Service Manual - part 8

3 - 8

CHK

ADJ

AIR FILTER CASE

EAS00043

AIR FILTER CASE

4

1

3

2

(4)

T

 

R

.

.

7 Nm (0.7 m

 

•

 kg, 5.1 ft 

•

 Ib)

T

 

R

.

.

3 Nm (0.3 m

 

•

 kg, 2.2 ft 

•

 Ib)

Order

Job/Part

Q’ty

Remarks

Removing the air filter case

Remove the parts in the order listed.

Fuel tank

Refer to “FUEL TANK”.

1

Air filter case

1

2

Air filter case cover

1

3

Air filter element

1

4

Air filter check hose

1

For installation, reverse the removal 
procedure.

3 - 9

CHK

ADJ

EAS00043

SILENCER AIR FILTER CASE

(4)

1

2

3

14

15

17

11

5

6

7

13

12

16

9

10

4

T

 

R

.

.

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

8

T

 

R

.

.

15 Nm (1.5 m 

•

 

kg, 11 ft

 

•

 

Ib)

T

 

R

.

.

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

Order

Job/Part

Q’ty

Remarks

Removing the silencer air filter case

Remove the parts in the order listed.

Air filter case

Refer to “AIR FILTER CASE”.

1

Silencer air filter case cover

1

2

Silencer air filter element

1

3

Silencer air filter case bracket

1

4

Cylinder head breather hose

1

Disconnect.

5

Resonator

1

6

Silencer air filter case drain hose

1

7

Atmospheric pressure sensor coupler

1

Disconnect.

8

Intake air temperature sensor coupler

1

Disconnect.

SILENCER AIR FILTER CASE

3 - 10

CHK

ADJ

(4)

1

2

3

14

15

17

11

5

6

7

13

12

16

9

10

4

T

 

R

.

.

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

8

T

 

R

.

.

15 Nm (1.5 m 

•

 

kg, 11 ft

 

•

 

Ib)

T

 

R

.

.

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

Order

Job/Part

Q’ty

Remarks

9

Intake air pressure sensor 1 coupler

1

Disconnect.

10

Liner control valve inlet hose

1

Disconnect.

11

Clamp screw

2

Loosen.

12

Atmospheric pressure sensor bracket

1

13

Atmospheric pressure sensor

1

14

Intake air pressure sensor 1

1

15

Intake air pressure sensor 1 bracket

1

16

Intake air temperature sensor

1

17

Silencer air filter case

1

For installation, reverse the removal 
procedure.

SILENCER AIR FILTER CASE

3 - 11

CHK

ADJ

ADJUSTING THE VALVE CLEARANCE

EAS00047

ENGINE

ADJUSTING THE VALVE CLEARANCE

The following procedure applies to all of the
valves.

NOTE:

_ 

• The valve clearance is automatically

adjusted by the hydraulic valve lifter. How-
ever, there are times that the valve clearance
is needed to be adjusted manually. If this is
the case, adjust the clearance of the two
maladjusted or worn valves, of a rocker arm,
with the adjusting screw.

È

If clearance is on the slip side 

1

, loosen the

adjusting screw and bring the valve clear-
ance 

a

 within specification. Check if the

valve clearance 

b

 on the adjusting screw

2

 side is within specification.

É

If clearance is on the adjusting screw 

2

side, tighten the adjusting screw and bring
the valve clearance 

b

 within specification.

• Valve clearance adjustment should be made

on a cold engine, at room temperature.

• When the valve clearance is to be measured

or adjusted, the piston must be at top dead
center (TDC) on the compression stroke.

1. Remove:

• seat

Refer to “SEAT AND SIDE COVERS”.

• fuel tank

Refer to “FUEL TANK”.

• air filter case

Refer to “AIR FILTER CASE”.

• silencer air filter case

Refer to “SILENCER AIR FILTER CASE”.

È

É

2. Disconnect:

• spark plug caps 

1

 

• cylinder head breather hose 

2

 

• oil tank breather hose 

3

 

3. Remove:

• spark plugs
• cylinder head covers (upper)
• gaskets
• dowel pins

2

1

3

1

3 - 12

CHK

ADJ

ADJUSTING THE VALVE CLEARANCE

4. Remove:

• engine left side cover 

1

 

1

5. Remove:

• timing mark accessing screw 

1

 

• crankshaft end cover 

2

 

1

2

6. Remove:

• decompression solenoid cover 

1

 

• camshaft sprocket cover 

2

 

1

2

7. Measure: 

• valve clearance 

Out of specification 

→

 Adjust.

Valve clearance (cold) 

Intake valve 

0 ~ 0.04 mm (0 ~ 0.0016 in) 

Exhaust valve 

0 ~ 0.04 mm (0 ~ 0.0016 in)

3 - 13

CHK

ADJ

ADJUSTING THE VALVE CLEARANCE

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Piston #1 TDC (rear cylinder)

a. Turn the crankshaft counterclockwise.
b. When piston #1 is at TDC on the compres-

sion stroke, align the TDC mark 

a

 on the

crankshaft position sensor rotor with the
pointer 

b

 on the clutch/crankshaft position

sensor rotor cover.

c. Check the camshaft drive gear mark 

c

position and camshaft driven gear mark 

d

position as shown.
If the marks are not aligned, turn the crank-
shaft counterclockwise 360 degrees and
recheck step b.

d. Measure the valve clearance with a thick-

ness gauge.

d

c

Piston #2 TDC (front cylinder)

a. Turn the crankshaft counterclockwise from

the piston #1 TDC by 408 degrees.

b. When piston #2 is at TDC on the compres-

sion stoke, align the TDC mark 

e

 on the

crankshaft position sensor rotor with the
pointer 

b

 on the clutch/crankshaft position

sensor rotor cover.

c. Check the camshaft drive gear mark 

c

position and camshaft driven gear mark 

d

position as shown.

d. Measure the valve clearance with a thick-

ness gauge.

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d

c

3 - 14

CHK

ADJ

ADJUSTING THE VALVE CLEARANCE

8. Adjust: 

• valve clearance

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a. Loosen the locknut 

1

. 

b. Insert a thickness gauge 

2

 between the

end of the adjusting screw and the valve tip. 

c. Turn the adjusting screw 

3

 in direction 

a

or 

b

 with the valve adjuster until the speci-

fied valve clearance is obtained.

d. Hold the adjusting screw to prevent it from

moving and tighten the locknut to specifica-
tion.

e. Measure the valve clearance again. 
f. If the valve clearance is still out of specifica-

tion, repeat all of the valve clearance adjust-
ment steps until the specified clearance is
obtained. 

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9. Install: 

• all moved parts

NOTE:

****

For installation, reverse the removal proce-
dure. Note the following points.

Refer to “ROCKER ARMS, PUSH RODS
AND VALVE LIFTERS” in chapter 5.

Valve adjuster

YM-08035

Adjusting
screw side

Slip side

Direction 

a

Valve clear-
ance is 
increased.

Valve clear-
ance is 
decreased.

Direction 

b

Valve clear-
ance is 
decreased.

Valve clear-
ance is 
increased.

T

 

R

.

.

Locknut 

20 Nm (2.0 m • kg, 14 ft • lb)

1

2

3

b

a

3 - 15

CHK

ADJ

SYNCHRONIZING THE THROTTLE BODIES

EAS00051

SYNCHRONIZING THE THROTTLE BODIES

NOTE:

_ 

Prior to synchronizing the throttle bodies, the
valve clearance and the engine idling speed
should be properly adjusted and the ignition
timing should be checked. 

1. Stand the motorcycle on a level surface.

NOTE:

_ 

Place the motorcycle on a suitable stand. 

2. Remove: 

• seat

Refer to “SEAT AND SIDE COVERS”.

• fuel tank

Refer to “FUEL TANK”.

• air filter case

Refer to “AIR FILTER CASE”.

3. Remove:

• hose 

1

 

• hose 

2

 

4. Install: 

• carburetor synchronizer
• inductive tachometer

(onto the spark plug lead of cylinder #1)

5. Start the engine and let it warm up for sev-

eral minutes.

6. Check: 

• engine idling speed 

Out of specification 

→

 Adjust. 

Refer to “ADJUSTING THE ENGINE
IDLING SPEED”.

Carburetor synchronizer

YU-08030 

Inductive tachometer

YU-8036-A

Engine idling speed 

850 ~ 950 r/min

1

2

3 - 16

CHK

ADJ

SYNCHRONIZING THE THROTTLE BODIES

7. Adjust: 

• throttle body synchronization

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a. With throttle body #1 as standard, adjust

throttle body #2 using the air screw 

1

. 

NOTE:

@ 

Rev the engine two or three times, each time
for less than a second, and check the synchro-
nization again. 

CAUTION:

Do not use the throttle valve adjusting
screws to adjust the throttle body synchro-
nization.

NOTE:

_ 

The difference in vacuum pressure between
the two throttle bodies should not exceed
1.33 kPa (10 mm Hg, 0.4 in Hg). 

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8. Check: 

• engine idling speed 

Out of specification 

→

 Adjust.

9. Stop the engine and remove the measuring

equipment.

10.Adjust: 

• throttle cable free play 

Refer to “ADJUSTING THE THROTTLE
CABLE FREE PLAY”.

11.Install: 

• air filter case

Refer to “AIR FILTER CASE”.

• fuel tank

Refer to “FUEL TANK”.

• seat

Refer to “SEAT AND SIDE COVERS”.

Vacuum pressure at engine idling 
speed 

50 kPa (375 mm Hg, 14.8 in Hg)

Throttle cable free play (at the 
flange of the throttle grip) 

4 ~ 6 mm (0.16 ~ 0.24 in)

3 - 17

CHK

ADJ

ADJUSTING THE ENGINE IDLING SPEED

EAS00053

ADJUSTING THE ENGINE IDLING SPEED

NOTE:

_ 

Prior to adjusting the engine idling speed, the
throttle bodies synchronization should be
adjusted properly, the air filter element should
be clean, and the engine should have ade-
quate compression. 

1. Start the engine and let it warm up for sev-

eral minutes.

2. Install: 

• inductive tachometer 

(onto the spark plug lead of cylinder #1)

3. Check: 

• engine idling speed 

Out of specification 

→

 Adjust.

4. Adjust: 

• engine idling speed

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a. Turn the throttle stop screw 

1

 in direction

a

 or 

b

 until the specified engine idling

speed is obtained.

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Inductive tachometer 

YU-8036-A

Engine idling speed 

850 ~ 950 r/min

Direction 

a

Engine idling speed is 
increased. 

Direction 

b

 

Engine idling speed is 
decreased. 

1

b

a

5. Adjust: 

• throttle cable free play 

Refer to “ADJUSTING THE THROTTLE
CABLE FREE PLAY”.

 

Throttle cable free play (at the 
flange of the throttle grip) 

4 ~ 6 mm (0.16 ~ 0.24 in)

3 - 18

CHK

ADJ

ADJUSTING THE THROTTLE CABLE FREE PLAY

EAS00058

ADJUSTING THE THROTTLE CABLE FREE 
PLAY

NOTE:

_ 

Prior to adjusting the throttle cable free play,
the engine idling speed should be adjusted. 

1. Check: 

• throttle cable free play 

a

 

Out of specification 

→

 Adjust.

Throttle cable free play (at the 
flange of the throttle grip) 

4 ~ 6 mm (0.16 ~ 0.24 in)

2. Adjust: 

• throttle cable free play

NOTE:

When the throttle is opened, the accelerator
cable 

1

 is pulled.

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Throttle body side

NOTE:

• When not replacing the throttle cable or

removing the cable from the throttle body,
adjust the throttle cable free play by following
step a and steps e through (h).

• When replacing the throttle cable or remov-

ing the cable from the throttle body, adjust
the throttle cable free play by following steps
a through (h).

a. Remove the seat and fuel tank.

Refer to “SEAT AND SIDE COVERS” and
“FUEL TANK”.

b. Loosen the locknut 

2

 on the decelerator

cable.

c. Turn the adjusting nut 

3

 in direction 

a

 or

b

 to take up any slack on the decelerator

cable.

d. Tighten the locknut 

2

.

3 - 19

CHK

ADJ

ADJUSTING THE THROTTLE CABLE FREE PLAY

NOTE:

Apply locking agend (LOCKTITE

®

) to the

threads of the locknut 

2

.

e. Loosen the locknut 

4

 on the accelerator

cable.

f. Turn the adjusting nut 

5

 in direction 

a

 or

b

 until the specified throttle cable free play

is obtained.

g. Tighten the locknut 

4

.

NOTE:

_ 

If the specified throttle cable free play cannot
be obtained on the throttle body side of the
cable, use the adjusting nut on the handlebar
side. 

h. Install the fuel tank and seat.

Refer to “FUEL TANK” and “SEAT AND
SIDE COVERS”.

Handlebar side

a. Loosen the locknut 

6

. 

b. Turn the adjusting nut 

7

 in direction 

c

 or

d

 until the specified throttle cable free play

is obtained.

c. Tighten the locknut.

WARNING

_ 

After adjusting the throttle cable free play,
start the engine and turn the handlebar to
the right or left to ensure that this does not
cause the engine idling speed to change. 

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Direction 

a

Throttle cable free play 
is increased. 

Direction 

b

Throttle cable free play 
is decreased.

Direction 

c

Throttle cable free play 
is increased. 

Direction 

d

 

Throttle cable free play 
is decreased.

3 - 20

CHK

ADJ

CHECKING THE SPARK PLUGS

EAS00059

CHECKING THE SPARK PLUGS

The following procedure applies to all of the
spark plugs. 
1. Remove:

• seat

Refer to “SEAT AND SIDE COVERS”.

• fuel tank

Refer to “FUEL TANK”.

• air filter case

Refer to “AIR FILTER CASE”.

• silencer air filter case

Refer to “SILENCER AIR FILTER CASE”.

2. Disconnect: 

• spark plug cap

3. Remove: 

• spark plug

CAUTION:

_ 

Before removing the spark plugs, blow
away any dirt accumulated in the spark
plug wells with compressed air to prevent it
from falling into the cylinders. 

4. Check: 

• spark plug type 

Incorrect 

→

 Change.

Spark plug type (manufacturer) 

DPR7EA-9 (NGK) 
X22EPR-U9 (DENSO)

3 - 21

CHK

ADJ

CHECKING THE SPARK PLUGS

5. Check: 

• electrode 

1

 

Damage/wear 

→

 Replace the spark plug. 

• insulator 

2

 

Abnormal color 

→

 Replace the spark plug. 

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.

Spark plug gap 

0.8 ~ 0.9 mm (0.0315 ~ 0.0354 in)

8. Install: 

• spark plug 

NOTE:

_ 

Before installing the spark plug, clean the
spark plug and gasket surface. 

9. Connect: 

• spark plug cap

10.Install:

• silencer air filter case

Refer to “SILENCER AIR FILTER CASE”.

• air filter case

Refer to “AIR FILTER CASE”.

• fuel tank

Refer to “FUEL TANK”.

• seat

Refer to “SEAT AND SIDE COVERS”.

T

 

R

.

.

18 Nm (1.8 m  •  kg, 13 ft  •  lb)

3 - 22

CHK

ADJ

CHECKING THE IGNITION TIMING

EAS00061

CHECKING THE IGNITION TIMING

NOTE:

_ 

Prior to checking the ignition timing, check the
wiring connections of the entire ignition sys-
tem. Make sure all connections are tight and
free of corrosion. 

1. Remove: 

• engine left side cover 

1

 

1

2. Remove:

• timing mark accessing screw 

1

 

1

3. Connect: 

• timing light 

1

 

• inductive tachometer 

2

 

(onto the spark plug lead of cylinder #1)

Timing light 

YM-33277-A 

Inductive tachometer 

YU-8036-A

4. Check: 

• ignition timing

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a. Start the engine, warm it up for several min-

utes, and then let it run at the specified
engine idling speed.

b. Check that the mark 

a

 is within the

required firing range 

b

 on the timing. 

Incorrect firing range 

→

 Check the ignition

system.

NOTE:

_ 

The ignition timing is not adjustable. 

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Engine idling speed 

850 ~ 950 r/min

3 - 23

CHK

ADJ

CHECKING THE IGNITION TIMING/

MEASURING THE COMPRESSION PRESSURE

5. Install: 

• timing mark accessing screw

6. Install: 

• engine left side cover

EAS00065

MEASURING THE COMPRESSION 
PRESSURE

The following procedure applies to all of the
cylinders.

NOTE:

_ 

Insufficient compression pressure will result in
a loss of performance. 

1. Measure: 

• valve clearance 

Out of specification 

→

 Adjust. 

Refer to “ADJUSTING THE VALVE
CLEARANCE”.

2. Start the engine, warm it up for several min-

utes, and then turn it off.

3. Remove:

• seat

Refer to “SEAT AND SIDE COVERS”.

• fuel tank

Refer to “FUEL TANK”.

• air filter case

Refer to “AIR FILTER CASE”.

• silencer air filter case

Refer to “SILENCER AIR FILTER CASE”.

4. Remove:

• camshaft sprocket cover

Refer to “ROCKER ARMS, PUSH RODS
AND VALVE LIFTERS” in chapter 5.

• decompression solenoid

Refer to “CAMSHAFTS” in chapter 5.

5. Install:

• camshaft sprocket cover

Refer to “ROCKER ARMS, PUSH RODS
AND VALVE LIFTERS” in chapter 5.

6. Disconnect: 

• spark plug cap