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Old 10-12-2016, 08:03 PM   #21 (permalink)
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Anyone have the adjustment settings for my 2000 Honda trx 300ex
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Old 10-15-2016, 08:33 PM   #22 (permalink)
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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.
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Last edited by aggiejet; 10-16-2016 at 09:22 AM. Reason: Adding comment about compression/exhaust stroke.
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Old 10-15-2016, 08:38 PM   #23 (permalink)
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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 !.
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Old 10-15-2016, 09:32 PM   #24 (permalink)
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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.
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"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
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96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
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Old 10-15-2016, 09:33 PM   #25 (permalink)
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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 ^^^.
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Old 10-16-2016, 09:08 AM   #26 (permalink)
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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.
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Last edited by aggiejet; 10-16-2016 at 09:16 AM. Reason: quoting shadetree
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Old 11-12-2016, 04:10 PM   #27 (permalink)
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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.
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Old 11-12-2016, 04:13 PM   #28 (permalink)
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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.
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Old 11-12-2016, 04:16 PM   #29 (permalink)
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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.
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