How to set and adjust valves ( any 4 stroke motor ) ! - Page 3 - Honda ATV Forum
Repair & Maintenance Having problems? Doing a rebuild? All Repair/Maintenance Discussions here.

 17Likes
Reply
 
LinkBack Thread Tools Display Modes
post #21 of 29 (permalink) Old 10-12-2016, 07:03 PM
Member
 
Trxxx123's Avatar
 
Join Date: Sep 2016
Posts: 86
Liked: 2 times
Anyone have the adjustment settings for my 2000 Honda trx 300ex
Trxxx123 is offline  
Sponsored Links
Advertisement
 
post #22 of 29 (permalink) Old 10-15-2016, 07:33 PM
Junior Member
 
aggiejet's Avatar
 
Join Date: Jul 2013
Location: NE OK
Posts: 15
How to set and adjust valves ( any 4 stroke motor ) !-image.jpeg

Here is the way to find TDC on TRX300fx

Use a flashlight to look inside the left hole to see a "T on its side" lined up with the index arrow inside the case while you rotate the starter reduction shaft counter clockwise (hole on the right with the driver handle in it) Access is accomplished by removing the plug covers with a large screwdriver. The starter reduction shaft needs a 25 Torx bit.

Ensure engine is on compression stroke and not exhaust stroke.

1994 TRX300FW

Last edited by aggiejet; 10-16-2016 at 08:22 AM. Reason: Adding comment about compression/exhaust stroke.
aggiejet is offline  
post #23 of 29 (permalink) Old 10-15-2016, 07:38 PM Thread Starter
Super Moderator
Supporting Member
 
shadetree's Avatar
 
Join Date: Feb 2010
Location: north little rock, ar.
Posts: 29,936
Liked: 1883 times
Quote:
Originally Posted by aggiejet View Post
Attachment 55306

Here is the way to find TDC on TRX300fx

Use a flashlight to look inside the left hole to see a "T on its side" lined up with the index arrow inside the case while you rotate the starter reduction shaft counter clockwise (hole on the left with the driver handle in it) Access is accomplished by removing the plug covers with a large screwdriver. The starter reduction shaft needs a 25 Torx bit.
ummm..yeah you will get TDC alright, but..will it be on compression stroke ?, or exhaust stroke ?. must be on compression stroke..big difference !.

'89 trx350D foreman 4x4...'85 vf700c magna, '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho, '05 trx500fm
shadetree is online now  
Sponsored Links
Advertisement
 
post #24 of 29 (permalink) Old 10-15-2016, 08:32 PM
Super Moderator
Supporting Member
 
TRX2fiveO's Avatar
 
Join Date: Jun 2009
Location: East coast North Carolina
Posts: 18,091
Liked: 316 times
Garage
Another simple way is to remove the spark plug put your finger over the plug hole and bump the starter or turn the flywheel by socket until you feel air pushing on your finger, then using a long dowel rod or screw driver stick it in the plug hole and slowly turn the crank until the piston is at the top of the cylinder and the "-"by the T is aligned with the notch in the cover.
shadetree and jay10 like this.

"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
91 TRX250X aka "MOOSE WAGON" RETIRED
96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
06 TRX450ER aka === Under construction

Progress and Help
PM FOR MANUAL HELP
JETTING
Service_Manual_Downloads
2000_400EX_Build
400EX_Pivot_Bolt_
TRX2fiveO is offline  
post #25 of 29 (permalink) Old 10-15-2016, 08:33 PM Thread Starter
Super Moderator
Supporting Member
 
shadetree's Avatar
 
Join Date: Feb 2010
Location: north little rock, ar.
Posts: 29,936
Liked: 1883 times
Quote:
Originally Posted by TRX2fiveO View Post
Another simple way is to remove the spark plug put your finger over the plug hole and bump the starter or turn the flywheel by socket until you feel air pushing on your finger, then using a long dowel rod or screw driver stick it in the plug hole and slowly turn the crank until the piston is at the top of the cylinder and the "-"by the T is aligned with the notch in the cover.
yep..agreed ^^^.

'89 trx350D foreman 4x4...'85 vf700c magna, '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho, '05 trx500fm
shadetree is online now  
post #26 of 29 (permalink) Old 10-16-2016, 08:08 AM
Junior Member
 
aggiejet's Avatar
 
Join Date: Jul 2013
Location: NE OK
Posts: 15
Quote:
Originally Posted by shadetree View Post
Quote:
Originally Posted by aggiejet View Post
Attachment 55306

Here is the way to find TDC on TRX300fx

Use a flashlight to look inside the left hole to see a "T on its side" lined up with the index arrow inside the case while you rotate the starter reduction shaft counter clockwise (hole on the left with the driver handle in it) Access is accomplished by removing the plug covers with a large screwdriver. The starter reduction shaft needs a 25 Torx bit.
ummm..yeah you will get TDC alright, but..will it be on compression stroke ?, or exhaust stroke ?. must be on compression stroke..big difference !.

I posted this in an effort to show people with a similar engine design a different method for manipulating their engine into the proper position, and I did not see this method mentioned anywhere in this forum and I thought it would be educational. It is the method used in the Service manual. I forgot to add to be sure to be on compression stroke and will edit. .

Your original post talks in excellent detail about the process, but on my 94 TRX300fx, the only way I was able to advance the engine was by hitting the starter or by the kick starter. I did the latter by removing the kick starter and laying a piece of baling wire in the splines of the extended shaft and then used a 18mm 12 point socket wrench on the splined shaft. (17mm too small, 18mm too big) I was able to find top dead center using this method coupled with the dowel rod in the spark plug hole technique.

Afterwards, I discovered a Service Manual on YouTube and it showed the technique I described, which I found way easier and to be more accurate.

I don't know how to "Turn the crank backwards" on this Quad, as you mentioned in the original post. I don't think turning the starter reduction shaft clockwise will do anything.

1994 TRX300FW

Last edited by aggiejet; 10-16-2016 at 08:16 AM. Reason: quoting shadetree
aggiejet is offline  
post #27 of 29 (permalink) Old 11-12-2016, 03:10 PM
Senior Member
 
jameslb's Avatar
 
Join Date: Nov 2016
Location: Tucson Arizona
Posts: 154
Liked: 24 times
Garage
Helpful is good. I have mechanic fear especially on Honda valves. Our dealer here gets pretty good dough for valve adjustment and the service interval is pretty tight. As I have a Silverwing too, I would save a bundle if I had valve confidence. Thanks for the post, shadetree.
jameslb is offline  
post #28 of 29 (permalink) Old 11-12-2016, 03:13 PM Thread Starter
Super Moderator
Supporting Member
 
shadetree's Avatar
 
Join Date: Feb 2010
Location: north little rock, ar.
Posts: 29,936
Liked: 1883 times
Quote:
Originally Posted by jameslb View Post
Helpful is good. I have mechanic fear especially on Honda valves. Our dealer here gets pretty good dough for valve adjustment and the service interval is pretty tight. As I have a Silverwing too, I would save a bundle if I had valve confidence. Thanks for the post, shadetree.
your welcome, I hope I made it easier , and cheaper for ya ?..lol.

'89 trx350D foreman 4x4...'85 vf700c magna, '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho, '05 trx500fm
shadetree is online now  
post #29 of 29 (permalink) Old 11-12-2016, 03:16 PM Thread Starter
Super Moderator
Supporting Member
 
shadetree's Avatar
 
Join Date: Feb 2010
Location: north little rock, ar.
Posts: 29,936
Liked: 1883 times
Quote:
Originally Posted by aggiejet View Post
Quote:
Originally Posted by shadetree View Post
Quote:
Originally Posted by aggiejet View Post
Attachment 55306

Here is the way to find TDC on TRX300fx

Use a flashlight to look inside the left hole to see a "T on its side" lined up with the index arrow inside the case while you rotate the starter reduction shaft counter clockwise (hole on the left with the driver handle in it) Access is accomplished by removing the plug covers with a large screwdriver. The starter reduction shaft needs a 25 Torx bit.
ummm..yeah you will get TDC alright, but..will it be on compression stroke ?, or exhaust stroke ?. must be on compression stroke..big difference !.

I posted this in an effort to show people with a similar engine design a different method for manipulating their engine into the proper position, and I did not see this method mentioned anywhere in this forum and I thought it would be educational. It is the method used in the Service manual. I forgot to add to be sure to be on compression stroke and will edit. .

Your original post talks in excellent detail about the process, but on my 94 TRX300fx, the only way I was able to advance the engine was by hitting the starter or by the kick starter. I did the latter by removing the kick starter and laying a piece of baling wire in the splines of the extended shaft and then used a 18mm 12 point socket wrench on the splined shaft. (17mm too small, 18mm too big) I was able to find top dead center using this method coupled with the dowel rod in the spark plug hole technique.

Afterwards, I discovered a Service Manual on YouTube and it showed the technique I described, which I found way easier and to be more accurate.

I don't know how to "Turn the crank backwards" on this Quad, as you mentioned in the original post. I don't think turning the starter reduction shaft clockwise will do anything.
I have not been in this thread until today ?, but..if you removed the center cap on the left hand side case, you could use the 17mm crank bolt to turn the motor backwards.

'89 trx350D foreman 4x4...'85 vf700c magna, '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho, '05 trx500fm
shadetree is online now  
Reply

  Lower Navigation
Go Back   Honda ATV Forum > Honda ATV Technical Discussions > Repair & Maintenance

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda ATV Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome