Yamaha XV19SW(C), XV19W(C), XV19MW(C), XV19CTSW(C), XV19CTW(C), XV19CTMW(C). Service Manual - part 15

CAMSHAFTS

5-16

Removing the push rods and rocker arms

Order

Job/Parts to remove

Q’ty

Remarks

1

Rear rocker arm base assembly

1

2

Front rocker arm base assembly

1

3

Rocker arm base gasket

2

4

Dowel pin

4

5

Pull rod 1

3

l = 286.5 mm (11.280 in) pink painting

6

Pull rod 2

1

l = 288.5 mm (11.358 in) sky blue painting

7

Rocker arm shaft

4

8

Rocker arm 1

2

9

Rocker arm 2

2

10

Locknut

4

11

Adjusting screw

4

12

Rear rocker arm base

1

13

Front rocker arm base

1

For installation, reverse the removal proce-
dure.

E

E

E

E

E

E

E

E

E

10

11

8

10
11

9

7

6

5

12

3

4

4

10

11

8

7

10

11

9

7

5

4

3

New

New

1

2

13

 

R

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

T

 

R

24 Nm (2.4 m 

•

 

kg, 17 ft

 

•

 

Ib)

T

 

R

20 Nm (2.0 m 

•

 

kg, 14 ft

 

•

 

Ib)

E

 

R

24 Nm (2.4 m 

•

 

kg, 17 ft

 

•

 

Ib)

CAMSHAFTS

5-17

Removing the valve lifters

Order

Job/Parts to remove

Q’ty

Remarks

Front cylinder

Refer to “CYLINDERS AND PISTONS” on 
page 5-45.

1

Push rod cover

2

2

O-ring

2

3

O-ring

2

4

Seal

2

5

Rear valve lifter case

1

6

Front valve lifter case

1

7

Valve lifter

4

For installation, reverse the removal proce-
dure.

1

7

3

5

6

2

1

4

3

2

New

LT

LS

4

7

New

New

New

New

New

New

New

T

 

R

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

T

 

R

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

LS

LT

LS

LS

E

E

LS

LS

LS

CAMSHAFTS

5-18

Removing the camshafts and right balancer

Order

Job/Parts to remove

Q’ty

Remarks

1

Camshaft driven gear

1

2

Straight key

1

3

Circlip

1

4

Washer

1

5

Conical spring washer

1

6

Washer

1

7

Rear cylinder camshaft gear

1

8

Front cylinder camshaft gear

1

9

Straight key

1

10

Right balancer driven gear

1

11

Straight key

1

12

Camshaft drive gear

1

13

Right balancer drive gear

1

14

Straight key

1

15

Oil delivery pipe 1

1

16

Camshaft cover

1

17

Camshaft cover gasket

1

New

 

R

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

 

R

40 Nm (4.0 m 

•

 

kg, 29 ft

 

•

 

Ib)

T

 

R

40 Nm (4.0 m 

•

 

kg, 29 ft

 

•

 

Ib)

 

R

60 Nm (6.0 m 

•

 

kg, 43 ft

 

•

 

Ib)

 

R

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

New

New

New

(7)

20

LS

M

E

2

E

E

15

8

9

7

6

5

4

3

1

14

10

11

13

12

16

17

18

M

19

E

21

18

CAMSHAFTS

5-19

18

Dowel pin

2

19

Rear cylinder camshaft

1

20

Front cylinder camshaft

1

21

Right balancer

1

For installation, reverse the removal proce-
dure.

Removing the camshafts and right balancer

Order

Job/Parts to remove

Q’ty

Remarks

New

 

R

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

 

R

40 Nm (4.0 m 

•

 

kg, 29 ft

 

•

 

Ib)

T

 

R

40 Nm (4.0 m 

•

 

kg, 29 ft

 

•

 

Ib)

 

R

60 Nm (6.0 m 

•

 

kg, 43 ft

 

•

 

Ib)

 

R

10 Nm (1.0 m 

•

 

kg, 7.2 ft

 

•

 

Ib)

New

New

New

(7)

20

LS

M

E

2

E

E

15

8

9

7

6

5

4

3

1

14

10

11

13

12

16

17

18

M

19

E

21

18

CAMSHAFTS

5-20

Disassembling the camshafts

Order

Job/Parts to remove

Q’ty

Remarks

1

Circlip

2

2

Washer

2

3

Decompression cam spring

2

4

Decompression cam

2

5

Decompression pin

2

6

Front cylinder camshaft

1

7

Rear cylinder camshaft

1

For assembly, reverse the disassembly pro-
cedure.

4

4

7

6

5

5

3

2

1

1

3

2

New

New

E

E

E

E

CAMSHAFTS

5-21

ET1D71030

REMOVING THE CYLINDER HEAD COVERS

1. Remove:

• Front cylinder
• Rear cylinder “1”

NOTE:

Due to the small clearance between the frame 
and the rear cylinder head cover, the three bolts 
“2” cannot be removed when the cover is in 
place. Loosen the bolts, and then remove the 
cover from the right side of the vehicle, making 
sure that the bolts do not scratch the rocker arms 
or other engine parts.

EAS23790

REMOVING THE ROCKER ARMS, PUSH 
RODS AND VALVE LIFTERS

1. Align:

• TDC mark “a” on the crankshaft position sen-

sor rotor
(with the pointer “b” on the clutch cover)

▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼▼▼

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 cover.

c. Check the camshaft drive gear mark “c” posi-

tion and camshaft driven gear mark “d” posi-
tion as shown.
If the marks are not aligned, turn the crank-
shaft counterclockwise 360 degrees and re-
check step (b).

▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲▲▲

2. Remove:

• Rocker arm bases

(with the rocker arms)

3. Remove:

• Valve lifters

NOTE:

Make a note of the position of each valve lifter so 
that they can be installed in the correct place.

EAS23830

REMOVING THE CAMSHAFTS

1. Loosen:

• Camshaft driven gear bolt “1”

NOTE:

• Place a folded copper washer “2” between the 

teeth of the camshaft drive gear and camshaft 
driven gear in order to lock them.

• Do not damage the teeth of the camshaft drive 

and camshaft driven gears.

1

2

2

b

a

d

c

CAMSHAFTS

5-22

2. Remove:

• Camshaft driven gear
• Straight key

NOTE:

Cover the crankcase hole with a clean rag to 
prevent the straight key from falling into the 
crankcase.

3. Loosen:

• Front cylinder camshaft gear bolt “1”

NOTE:

• Place a folded copper washer “2” between the 

teeth of the front cylinder camshaft gear and 
rear cylinder camshaft gear in order to lock 
them.

• Do not damage the teeth of the front cylinder 

camshaft and rear cylinder camshaft gears.

4. Remove:

• Rear cylinder camshaft gear
• Front cylinder camshaft gear
• Straight key

NOTE:

Cover the crankcase hole with a clean rag to 
prevent the straight key from falling into the 
crankcase.

5. Loosen:

• Camshaft drive gear bolt “1”
• Right balancer driven gear bolt “2”

NOTE:

• Place a folded copper washer “3” between the 

teeth of the right balancer drive gear and right 
balancer driven gear in order to lock them.

• Place a folded copper washer “4” between the 

teeth of the right balancer drive gear and right 
balancer driven gear in order to lock them.

• Do not damage the teeth of the right balancer 

drive and right balancer driven gears.

6. Remove:

• Right balancer driven gear
• Camshaft drive gear
• Right balancer drive gear
• Straight keys

NOTE:

Cover the crankcase hole with a clean rag to 
prevent the straight keys from falling into the 
crankcase.

7. Remove:

• Oil delivery pipe 1 “1”
• Camshaft cover “2”

NOTE:

Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the 
bolts are fully loosened, remove them.

1

2

1

2

1

3

2

4

CAMSHAFTS

5-23

EAS23860

CHECKING THE CAMSHAFTS

1. Check:

• Cam

Blue discoloration/pitting/scratches 

→

 Re-

place the camshaft.

2. Measure:

• Cam dimensions A “a” and B “b”

Out of specification 

→

 Replace the camshaft.

3. Measure:

• Camshaft journal diameter (crankcase side) 

“a”
Out of specification 

→

 Replace the camshaft.

4. Measure:

• Camshaft journal diameter (camshaft cover 

side) “a”
Out of specification 

→

 Replace the camshaft.

 

Camshaft lobe dimensions

Intake A

42.532–42.632 mm (1.6745–
1.6784 in)

Limit

42.432 mm (1.6705 in)

Intake B

35.950–36.050 mm (1.4154–
1.4193 in)

Limit

35.850 mm (1.4114 in)

Exhaust A

42.530–42.630 mm (1.6744–
1.6783 in) (cylinder #1)
42.531–42.631 mm (1.6744–
1.6784 in) (cylinder #2)

Limit

42.430 mm (1.6705 in) (cylinder 
#1)
42.431 mm (1.6705 in) (cylinder 
#2)

Exhaust B

35.950–36.050 mm (1.4154–
1.4193 in)

Limit

35.850 mm (1.4114 in)

1

2

 

Camshaft journal diameter 
(crankcase side)

24.957–24.980 mm (0.9826–
0.9835 in)

 

Camshaft journal diameter (cam-
shaft cover side)

27.957–27.980 mm (1.1007–
1.1016 in)

a

a

CAMSHAFTS

5-24

5. Measure:

• Crankcase hole inside diameter “a”

Out of specification 

→

 Replace the crank-

case.

6. Measure:

• Camshaft cover hole inside diameter “a”

Out of specification 

→

 Replace the camshaft 

cover.

7. Calculate:

• Camshaft-to-crankcase clearance

Out of specification 

→

 Replace the defective 

part(s).

NOTE:

Calculate the clearance by subtracting the cam-
shaft journal diameter (crankcase side) from the 
crankcase hole inside diameter.

8. Calculate:

• Camshaft to camshaft cover clearance

Out of specification 

→

 Replace the defective 

part(s).

NOTE:

Calculate the clearance by subtracting the cam-
shaft journal diameter (camshaft cover side) 
from the camshaft cover hole inside diameter.

9. Check:

• Camshaft drive gears
• Camshaft driven gears
• Front cylinder camshaft gears
• Rear cylinder camshaft gears

Chips/pitting/roughness/wear 

→

 Replace the 

defective part(s).

EAS23890

CHECKING THE ROCKER ARMS AND 
ROCKER ARM SHAFTS

The following procedure applies to all of the 
rocker arms and rocker arm shafts.
1. Check:

• Rocker arm

Damage/wear 

→

 Replace.

2. Check:

• Rocker arm shaft

Blue discoloration/excessive wear/pitting/ 
scratches 

→

 Replace or check the lubrication 

system.

3. Measure:

• Rocker arm inside diameter “a”

Out of specification 

→

 Replace.

 

Crankcase hole inside diameter

25.000–25.021 mm (0.9843–
0.9851 in)

 

Camshaft cover hole inside diam-
eter

28.000–28.021 mm (1.1024–
1.1032 in)

a

a

a

a

a

a

 

Camshaft to crankcase clearance

0.020–0.064 mm (0.0008–0.0025 
in)

 

Camshaft to camshaft cover 
clearance

0.020–0.064 mm (0.0008–0.0025 
in)

 

Rocker arm inside diameter

18.000–18.018 mm (0.7087–
0.7094 in)

CAMSHAFTS

5-25

4. Measure:

• Rocker arm shaft outside diameter “a”

Out of specification 

→

 Replace.

5. Calculate:

• Rocker arm to rocker arm shaft clearance

NOTE:

Calculate the clearance by subtracting the rock-
er arm shaft outside diameter from the rocker 
arm inside diameter.

Above 0.08 mm (0.003 in) 

→

 Replace the de-

fective part(s).

EAS23900

CHECKING THE ROCKER ARM BASES

1. Check:

• Rocker arm base

Cracks/damage 

→

 Replace.

EAS23910

CHECKING THE PUSH RODS

1. Check:

• Push rod

• Push rod end

Bends/damage 

→

 Replace.

2. Measure:

• Push rod runout

Out of specification 

→

 Replace.

EAS23920

CHECKING THE VALVE LIFTERS AND 
VALVE LIFTER CASES

1. Check:

• Valve lifter

Blue discoloration/excessive wear/pitting/ 
scratches 

→

 Replace and check the lubrica-

tion system.

2. Check:

• Valve lifter case “1”

Damage/wear 

→

 Replace the valve lifter 

case.

• O-rings “2”

Damage/wear 

→

 Replace the O-ring.

3. Measure:

• Valve lifter outside diameter “a”

Out of specification 

→

 Replace.

 

Rocker arm shaft outside diame-
ter

17.976–17.991 mm (0.7077–
0.7083 in)

 

Rocker-arm-to-rocker-arm-shaft 
clearance

0.009–0.042 mm (0.0004–0.0017 
in)

 

Valve push rod runout

0.3 mm (0.012 in)

1

2

CAMSHAFTS

5-26

4. Measure:

• Valve lifter case inside diameter “a”

Out of specification 

→

 Replace.

5. Calculate:

• Valve lifter-to-valve lifter case clearance

NOTE:

Calculate the clearance by subtracting the valve 
lifter outside diameter from the valve lifter case 
inside diameter.

Above 0.072 mm (0.0028 in) 

→

 Replace the 

defective part(s).

EAS23930

CHECKING THE PUSH ROD COVER

1. Check:

• Push rod cover

Cranks/damage 

→

 Replace.

• Seal 
• O-ring

Damage/wear 

→

 Replace the seal and O-

ring as a set.

EAS23980

CHECKING THE DECOMPRESSION SYSTEM

1. Check:

• Decompression system

NOTE:

• Check that the decompression pin “1” projects 

from the camshaft.

• Check that the decompression cam “2” and de-

compression pin “1” moves smoothly.

2. Check:

• Decompression cam
• Decompression pin

Damage/wear 

→

 Replace.

ET1D71031

CHECKING THE DECOMPRESSION CAM 
SPRING

The following procedure applies to all of the de-
compression cam springs.
1. Measure:

• Decompression cam spring free length “a”

Out of specification 

→

 Replace the decom-

pression cam spring.

 

Valve lifter outside diameter (in-
take)

22.962–22.974 mm (0.9040–
0.9045 in)

Valve lifter outside diameter (ex-
haust)

22.962–22.974 mm (0.9040–
0.9045 in)

 

Valve lifter hole inside diameter 
(intake)

23.000–23.021 mm (0.9055–
0.9063 in)

Valve lifter hole inside diameter 
(exhaust)

23.000–23.021 mm (0.9055–
0.9063 in)

a

 

Valve-lifter-to-valve-lifter-hole 
clearance

0.026–0.059 mm (0.0010–0.0023 
in)

2

1

CAMSHAFTS

5-27

2. Measure:

• Compressed decompression cam spring 

force “a”
Out of specification 

→

 Replace the decom-

pression cam spring.

EAS23990

CHECKING THE OIL DELIVERY PIPE

1. Check:

• Oil delivery pipe 1

Damage 

→

 Replace.

Obstruction 

→

 Wash and blow out with com-

pressed air.

• O-rings 

Damage/wear 

→

 Replace.

EAS24030

INSTALLING THE CAMSHAFTS

1. Install:

• Camshafts

NOTE:

Lubricate molybdenum disulfide oil onto the 
camshaft journals and lobes.

2. Install:

• Camshaft cover 1 “1”
• Oil delivery pipe 1 “2”

NOTE:

Tighten the camshaft cover bolts in stages and 
in a crisscross pattern.

3. Install:

• Straight keys
• Right balancer drive gear “1”
• Right balancer driven gear “2”
• Camshaft driven gear

NOTE:

• Cover the crankcase hole with a clean rag to 

prevent the straight keys from falling into the 
crankcase.

• Align the punch mark “a” on the right balancer 

drive gear “1” with the punch mark “b” on the 
right balancer driven gear “2”.

4. Tighten:

• Camshaft drive gear bolt “1”
• Right balancer driven gear bolt “2”

 

Decompression cam spring

Free length

20.0 mm (0.79 in)

Limit

19.0 mm (0.75 in)

 

Decompression cam spring

Installed compression spring 
force

0.1335–0.1631 N (0.0300–0.0367 
lb) (0.0136–0.0166 kgf)

Installed length

8.0 mm (0.31 in)

b. Installed length

2

1

1

2

b

a

CAMSHAFTS

5-28

NOTE:

• Lubricate the camshaft drive gear bolt and right 

balancer driven gear bolt threads with engine 
oil.

• Place a folded copper washer “3” between the 

teeth of the right balancer drive gear and right 
balancer driven gear in order to lock them.

• Place a folded copper washer “4” between the 

teeth of the right balancer drive gear and right 
balancer driven gear in order to lock them.

• Do not damage the teeth of the right balancer 

drive and right balancer driven gears.

• After tightening the camshaft driven gear bolt, 

remove the copper washer to clean the teeth of 
the right balancer drive gear and right balancer 
driven gear.

5. Install:

• Rear cylinder camshaft gear “1”
• Front cylinder camshaft gear “2”
• Washer “3”
• Conical spring washer “4”
• Washer “5”

• Circlip “6” 

NOTE:

• Align the projection “a” on the washer “3” with 

the punch mark “b” on the front cylinder cam-
shaft gear.

• Install the conical spring washer “4” as shown 

in the illustration.

• Lubricate the front cylinder camshaft gear bolt 

threads with engine oil.

6. Tighten:

• Front cylinder camshaft gear bolt “1”

NOTE:

• Place a folded copper washer “2” between the 

teeth of the front cylinder camshaft gear and 
rear cylinder camshaft gear in order to lock 
them.

• Do not damage the teeth of the front cylinder 

camshaft and rear cylinder camshaft gears.

• After tightening the front cylinder camshaft 

gear bolt, remove the copper washer to clean 
the teeth of the front cylinder camshaft and rear 
cylinder camshaft gears.

T

 

R

.

 

Camshaft drive gear bolt

60 Nm (6.0 m·kg, 43 ft·lb)

Right balancer driven gear bolt

40 Nm (4.0 m·kg, 29 ft·lb)

1

3

2

4

New

T

 

R

.

 

Front cylinder camshaft gear bolt

40 Nm (4.0 m·kg, 29 ft·lb)

1

b

a

2

3

3

4

5

6

New

CAMSHAFTS

5-29

7. Install:

• Straight key
• Camshaft driven gear “1”

NOTE:

• Cover the crankcase hole with a clean rag to 

prevent the straight key from falling into the 
crankcase.

• Align the punch mark “a” on the camshaft driv-

en gear “1” with the punch mark “b” on the 
camshaft drive gear “2”.

• Insert a cross-headed screwdriver into one of 

the holes in the outer camshaft driven gear and 
rotate the gear until the teeth of both driven 
gears are aligned. The teeth of both camshaft 
driven gears must be aligned for installation.

8. Tighten:

• Camshaft driven gear bolt “1”

NOTE:

• Place a folded copper washer “2” between the 

teeth of the camshaft drive gear and camshaft 
driven gear in order to lock them.

• Do not damage the teeth of the camshaft drive 

and camshaft driven gears.

• After tightening the camshaft driven gear bolt, 

remove the copper washer to clean the teeth of 
the camshaft drive and camshaft driven gears.

EAS24050

BLEEDING A VALVE LIFTER

A valve lifter must be bled in the following cases.
• When installing a new valve lifter
• When the valve lifter leaks oil
1. Bleed:

• Valve lifter

▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼▼▼

a. Fill a container with kerosene and place the 

valve lifter into the container as shown.
Pump the plunger side of the valve lifter with 
a press a number of times to let in kerosene.

CAUTION:

ECA14630

• Do not pump the valve lifter excessively.
• Kerosene is highly flammable.

b. Install the valve lifter into the engine.

T

 

R

.

 

Camshaft driven gear bolt

60 Nm (6.0 m·kg, 43 ft·lb)

1

2

1

b

a

2

1. Kerosene
2. Valve lifter

1

2

CAMSHAFTS

5-30

CAUTION:

ECA14650

Be sure to install the valve lifter in its appro-
priate position.

c. Start the engine and warm it up.
d. Stop the engine.
e. Remove the camshaft sprocket cover.
f. Rotate the camshaft until the punch mark “1” 

on the camshaft driven gear aligns with the 
punch mark on the camshaft drive gear as 
shown. This is the condition in which piston 
#1 is at top dead center (TDC).

NOTE:

The crankshaft can be rotated smoothly when 
the spark plugs are removed.

WARNING

EWA12880

Be careful since the engine is hot.

g. With piston #1 at TDC, count the indicated 

number of gear teeth and place marks “2” 
through “5” on the camshaft driven gear as 
shown. When these marks align between the 
centers of the camshaft drive and driven 
gears, the corresponding valve lifter is at its 
highest point.

h. Rotate the crankshaft until the mark (on the 

camshaft driven gear) for the valve lifter to be 
bled aligns with the camshaft drive gear as 
shown.
Example:
For bleeding the cylinder #2 intake valve lift-
er, align mark “2” as shown.

i. Leave the camshaft drive and driven gears 

aligned for five minutes to allow the valve lift-
er to bleed.

j. If necessary, repeat steps (h) and (i) to bleed 

other valve lifters.

▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲ ▲▲▲

▲

▲▲▲

EAS24060

INSTALLING THE VALVE LIFTERS

1. Install:

• Front valve lifter case
• Rear valve lifter case
• Valve lifters

NOTE:

• Install the valve lifter in the correct place.
• After installing the valve lifters, fill the tops of 

them with engine oil.

1. Piston #1 TDC punch mark
2. Cylinder #2 intake valve at its highest point
3. Cylinder #1 exhaust valve at its highest point
4. Cylinder #1 intake valve at its highest point
5. Cylinder #2 exhaust valve at its highest point

2

2 1

1

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

1

2

3

4

5

1. Piston #1 TDC punch mark
2. Cylinder #2 intake valve at its highest point

T

 

R

.

 

Valve lifter case bolt

10 Nm (1.0 m·kg, 7.2 ft·lb)
LOCTITE

®

1

2

2

2

1

1

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

CAMSHAFTS

5-31

2. Install:

• Push rod covers “1”

NOTE:

Install the push rod covers so that their paint 
marks “a” are facing towards the cylinder heads.

EAS24070

INSTALLING THE ROCKER ARMS AND 
PUSH RODS

The following procedure applies to both cylin-
ders.
1. Install:

• Rocker arms “1”
• Rocker arm shafts “2”

(onto rocker arm base)

NOTE:

The thread hole “a” of the rocker arm shaft must 
face to the outside.

2. Install:

• Rocker arm base

(with rocker arms)

• Push rods

▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼ ▼▼▼

▼

▼▼▼

a. Put the rocker arm base on the cylinder head.
b. Install the push rods.

NOTE:

• Be sure to correctly install the push rods be-

tween the rocker arms and valve lifters as 
shown. The illustration is viewed from the right 
side of the vehicle.

• The lengths of push rod 1 and push rod 2 are 

different. Therefore, be sure to install them in 
the proper position.

• Lubricate the push rod end balls with engine 

oil.

c. Install the rocker arm base bolts (M6) “1” and 

rocker arm base bolts (M8) “2” and “3”.

NOTE:

Tighten the rocker arm base bolts in stages and 
in a crisscross pattern.

E

a

a

1

1

1

2

a

a

A. Rear cylinder
B. Front cylinder
1. Exhaust side rocker arm
2. Intake side rocker arm
3. Exhaust valve lifter
4. Intake valve lifter
5. Push rod 1 l = 286.5 mm (11.280 in)
6. Push rod 2 l = 288.5 mm (11.358 in)

T

 

R

.

 

Rocker arm base bolt (M6)

10 Nm (1.0 m·kg, 7.2 ft·lb)

Rocker arm base bolt (M8)

24 Nm (2.4 m·kg, 17ft·lb)