Honda 400ex shock setup???

Blaster200boy

New Member
Aug 15, 2009
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Floyds Knobs, IN
I'm gonna be getting my shock next weekend for the blaster....I am about 170 lbs and i do trail riding and i hit some tabletops and singles every now and then...I know the 400ex shock has the two adjustment screws...If someone can give a me a diagram of how to adjust it, that would be great...
 
There's no need for a digram, it's pretty simple to do. Here's a guide that explains it:

Finally !! The shocking story of how to "Tune your Suspension" !!! - - ATV at Off-Road.com
Your probably just like most people. You go to your local dealer ,pick out your ATV, take it home and ride it. Did you know that you could and should adjust the comfort of that 4 wheeled beast by adjusting those shocks and thereby giving you the a more comforting ride that means you will be LESS fatigued at the end of the day ? HA ! I didn't think so !! Well here it is,The best advice around. Tune your Suspension . Don't know how ? Don't be afraid, we'll walk you through it,step by ahhhh,don't step there,that looks like something my dog threw up. First we'll teach you a few simple things about ATV shocks.
1) PRELOAD is when you adjust the length of the shock to match your body weight. The springs that you see on them controls PRELOAD.
2) COMPRESSION controls how easy or hard it is for the shock to squeeze together when you hit bumps.
3) REBOUND controls how fast the shock returns to its normal position after it has been compressed.
One note here, NOT all shocks on all ATVs have all these adjustments. Please consult you owners manual to determine which adjustments you can make.


Front shock-Preload Adjustment
Preload Adjustment
By turning the large nut at the bottom of the spring you can adjust the springs tension to suit your body weight. To properly make this adjustment you will need to .measure the "ride height sag"....
REAR SHOCK
1) lift the rear wheels up off the ground.
2) With the wheels off the ground, measure the distance from the top center of the rear axle to some point straight above it on the ATVs frame. Write this dimension down.
3) With all your riding gear on plop your butt on the seat with your feet on the pegs in your normal riding position. Then have somone measure the distance again in the same place as the first measurment. The difference between the 2 measurments is called the "ride height sag".
4) Adjust your preload so that your "ride height sag" is about 30% of your total suspension travel. Example: If you have 9" of total travel you should have about 3" of ride height sag.
FRONT SHOCK
Use the same procedure EXCEPT your "ride height sag" should be about 20% of your total shock travel.
Measuring with wheels off the ground

Measure again with full riding gear on

Compression Adjustment
Adjusting the compression of the shock determines how fast the shock "compresses" together. This adjustment should be made according to the type of riding you plan on doing. The real trick here is set the suspension at the point where you use all the travel of the shock without bottoming out hard .
With the setting too soft the suspension will feel "mushy" and you feel like it's "floating".
With the setting too hard, You'll feel every little bump you hit because the shock isn't absorbing the bumps like it should.
You can start by setting the compression at full soft. Ride the ATV for a short while .Then begin to ride over small bumps. Begin to adjust the shocks to absorb the bumps without feeling mushy. As you adjust the compression on the shocks, gradually begin moving up to bigger bumps and jumps. Every time you progress to larger jumps amd bumps readjust the shocks. Keep doing this untill you reach the point where you have reached YOUR personal limit of bumps or jumping safely while using all the travel in the shocks. (It's even ok if you allow the shocks to bottom out "slightly" as you land your largest jump)


Rebound adjustment
Rebound
The rebound adjustment is the setting that determines how fast the shock returns to its normal position.
Setting the rebound at full soft allows the shock to return to full extension more quickly. At this setting the ATV may begin to experience a pogo effect. As the rider speeds over bumps, a shock that returns too quickly may rebound right back up and smack you right in the Butt,sending you right over the handle bars.
Setting the rebound at full hard slows the return of the shock to it's normal position. At this setting as a rider speeds over bumps the shocks may not return to position fast enough causing the shocks "pack up". The more the shocks "pack up" The less travel they have untill they have a chance to return to their normal position.
The best way to set the rebound on your shocks is to find a set of"whoops". A series of rolling hills two feet high and six feet apart.
With the setting at full soft, ride through the whoops at a slow pace at first . Then each time you ride through the whoops go through a little faster adjusting the rebound untill you reach your fastest comfortable speed and the ATV is returning to its correct position without bucking you off.
Special THANX to "Mr Dune" for the great LT 500 pics !!

It's not brain surgery
The MOST important thing to remember is...........ONLY MAKE ONE CHANGE AT A TIME !!!!! Doing one change at a time will allow you to get a better feel for how your suspension is responding to the changes. Making more than one change at a time will just confuse you because you won't know which change made a desired or undesired effect. Tuning in your suspension to suit your needs will make you a much happier camper.

Finally !! The shocking story of how to "Tune your Suspension" !!! - - ATV at Off-Road.com
 
i have the 450r shock, same as the 400, except offset rezzie, and am a little heavier tha you, i have the preload adjusted as stated above, and have both shock settings on "s" for soft/slow, i like the feel of it so far,
remember the 400ex is alot heavier than our blasters and the shock is made for that weight, i have'nt done any big jumps yet, i had a broken leg last year, but will find out how it likes them soon
and also, get a set of ken oconnor racing top bushings, it makes the install a breeze, contact ken on here (oconnor), or at kenoconnorracing.com
 
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