514484

Yamaha YZ426F Manual

324
Zoom out
Zoom in
Previous page
1/633
Next page
4 - 43
ENG
CYLINDER AND PISTON
Piston ring
1. Measure:
● Ring side clearance
Use a feeler gauge 1.
Out of specification → Replace the pis-
ton and rings as a set.
N
OTE:
Clean carbon from the piston ring grooves and
rings before measuring the side clearance.
2. Position:
● Piston ring
(in cylinder)
N
OTE:
Insert a ring into the cylinder and push it
approximately 10 mm (0.39 in) into the cylin-
der. Push the ring with the piston crown so that
the ring will be at a right angle to the cylinder
bore.
a 10 mm (0.39 in)
Side clearance:
Standard <Limit>
Top ring
0.030 ~ 0.065 mm
(0.0012 ~ 0.0026 in)
0.12 mm
(0.005 in)
2nd ring
0.020 ~ 0.055 mm
(0.0008 ~ 0.0022 in)
0.12 mm
(0.005 in)
3. Measure:
● Ring end gap
Out of specification → Replace.
N
OTE:
You cannot measure the end gap on the
expander spacer of the oil control ring. If the oil
control ring rails show excessive gap, replace
all three rings.
End gap:
Standard <Limit>
Top ring
0.20 ~ 0.30 mm
(0.008 ~ 0.012 in)
0.55 mm
(0.022 in)
2nd ring
0.35 ~ 0.50 mm
(0.014 ~ 0.020 in)
0.85 mm
(0.033 in)
Oil ring
0.20 ~ 0.50 mm
(0.01 ~ 0.02 in)
—
… 324 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Yamaha YZ426F at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Yamaha YZ426F in the language / languages: English, German, French as an attachment in your email.

The manual is 39,02 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info