300 ex timing - Honda ATV Forum
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post #1 of 17 (permalink) Old 01-26-2012, 06:13 PM Thread Starter
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300 ex timing

what is the easiest way to check the timing on a 2006 300ex. just put a stage 2 web cam in it starts up and stays running but when you hit the throttle it stahls out.
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post #2 of 17 (permalink) Old 01-27-2012, 06:34 AM
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Take the valve cover off and take the timing plugs out. Use a 17mm socket and turn the flywheel counter clockwise til you find a sideways T followed by a straight up and down line. You want that line to be lined up with the notch in the timing hole. Once that is all lined up, go to the other side of the quad and look at your camshaft sprocket. Both lines on the sprocket should be parralel to the head. The lobes should be pointing down.
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post #3 of 17 (permalink) Old 01-27-2012, 04:38 PM
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Quote:
Originally Posted by Tippmann98 View Post
Take the valve cover off and take the timing plugs out. Use a 17mm socket and turn the flywheel counter clockwise til you find a sideways T followed by a straight up and down line. You want that line to be lined up with the notch in the timing hole. Once that is all lined up, go to the other side of the quad and look at your camshaft sprocket. Both lines on the sprocket should be parralel to the head. The lobes should be pointing down.
X2 on this. ↑↑↑↑↑ And welcome to the forums, ritenour.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #4 of 17 (permalink) Old 01-27-2012, 05:59 PM Thread Starter
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i took the timing plugs out in the little hole was an arrow. i turned the 17mm bolt counter clockwise and foud two lines. so i lined up the arrow in between the two lines and the lines on the cam sproket are parellal with on another but still doin the same thing.
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post #5 of 17 (permalink) Old 01-27-2012, 06:03 PM
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You need to line the notch up with the line with the "T" next to it
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post #6 of 17 (permalink) Old 01-27-2012, 06:06 PM
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X2, line it up with the line right beside the "T". The two marks that are side by side are used to check the ignition timing, not the cam timing.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #7 of 17 (permalink) Old 01-27-2012, 06:32 PM
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And make sure there is play in the valves when you have the flywheel on the "T" so you know it is TDC
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post #8 of 17 (permalink) Old 01-27-2012, 06:46 PM Thread Starter
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okay got the side ways t mark lined up with the arrow now on the cam side the lines are not pefectlly parallel with one another i tried to wove the cam gear to line them up perfect but it wont does will this effect anything?
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post #9 of 17 (permalink) Old 01-27-2012, 07:16 PM
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My 400ex is the same way. Just try moving the chain one link in each direction and if that makes it WAY off then go back to the original position. Sometimes it doesn't line up just perfect.
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post #10 of 17 (permalink) Old 01-27-2012, 08:16 PM
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X2, sometimes the two lines won't line up perfectly with the edge of the head, but they should be close. The more the timing chain is stretched, the more the lines will be off.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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