Question about 1996 Yamaha Royal Star XVZ 1300 A

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Adjust spring preload

Feels like bike bottoms out at bumps over 25mph

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There are no preload, compression or rebound adjustments on either end of a 1996 Royal Star. The front fork characteristics can be changed by internal modifications to the front fork piston and a change in fork oil weight (stock is 5W), lengthening the spacers immediately beneath the cap bolt, or addition of progressive springs. The rear shock absorber assembly is a unit with no serviceable parts, no modifications are practical. The only aftermarket suspension parts I've found for the 1996-1998 Royal Stars are kits offered by Hyperpro (ECM), they list kits for the front forks SP-YA13-SSA05 and the rear SP-YA13-SSB05; however, since the rear kit is purported to fit all years from 1996 to the present, and the rear suspension was redesigned for the 2002 model year, I suspect that you may find that the rear kit doesn't work at all.

Posted on Jul 29, 2010

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2002 Vstar 1100 is bottoming out with passenger

Replace the spring with a heavier duty should do the job.
Have you tried adjustments in the spring load to stiffen it up.
The rear shock on your Yamaha V-Star 1100 motorcycle assures that the rear wheel is always in contact with the ground and makes your ride much more comfortable by absorbing road vibration and shock while you ride.

But your shock needs to be adjusted for different riding styles, so depending on whether you ride fast or cruise slowly and how quickly you take turns, you may want to adjust the shock to get the most out of your ride.


Remove the passenger seat by loosening and removing the rear passenger seat mounting bolt with a socket wrench.
With the passenger seat removed, you should see two larger rider's seat mounting bolts.
Remove these bolts and pull the rider's seat off of the bike to expose the internals of the motorcycle. 2

Detach the quick-release clips of the ignitor unit found just beneath the seat using a screwdriver. Pull the ignitor unit up and to the right of the bike to move it out of your way.

Remove the mudguard quick-release clips in the same fashion, then pull the mudguard out of the bike to expose the rear shock adjuster. 3

Look for the small numbers on the rear shock adjuster.
On most 2002 V-Stars you should see the numbers 1 to 9 printed on the shock adjuster.

These numbers give you an idea of the current setting of the shock.
The higher the number, the stiffer the adjustment. 4

Loosen the shock by turning the shock adjuster counterclockwise to a smaller number using a spanner wrench.

This makes the shock softer and more forgiving when riding over bumps and uneven pavement, but will feel slower in turns and accelerations.

Tighten the shock by turning it clockwise to a higher number.
This makes the shock stiffer, increasing road response in turns and giving you a better feel of road conditions at the expense of comfort. 5

Replace the mudguard, ignitor unit, rider's seat and mounting bolts, and the passenger seat and mounting bolts.

Take your bike for a ride to feel the difference a turn of the shock adjuster makes.

Nov 10, 2013 | Patch Products Sid The Science Kids Why Do...

1 Answer

When I hit a bump it sounds like my bike is bottoming out. The noise is pretty loud. Is this a frame problem, shocks, or drive belt problem?

If your bike's suspension is bottoming out, it'll feel just like it did when you rode off the curb on your bicycle when you were young. Instead of the suspension absorbing the shock, you'd get a bone jarring slam when the suspension runs out of it's travel. In this case, you need to put more air pressure in your suspension system on your Ultra. If it is not an air suspension, adjust the rear shocks to a tighter preload and put a heavier weight oil put in the front forks.

Check the tension of the drive belt by having someone measure the deflection of the belt when ten pounds of force is applied to the middle of the lower belt run with you sitting on the bike. It should be about a 1/2" or so. Some bikes are different and since I don't have an owner's manual for all of them, I'd suggest calling the service department of your local dealer. They should be able to tell you the setting. They also sell a special tool for applying the ten pounds of force to the belt. It's not expensive either.

Good Luck

May 19, 2011 | 2001 Harley Davidson FLHTCUI Electra Glide...

1 Answer

Just want to raise rear shock

Firstly, the best starting point for a suspension set up is the manufacturers original settings. This allows you to go back to a baseline set up, no matter how much fiddling around you do.

Because everyone is slightly different and of differing weights, then a bike will work best when set up to the individual. The following rough guide for a solo rider has worked on bikes I've owned to give me a good suspension set up for road use.

Initially we'll adjust the preload on the suspension.
The front preload:-
1. Put a cable tie round the front fork stanchion (the shiney bit).
2. Get help from a mate and lift the front of the bike, so there is no weight on the front forks, and slide the cable tie down the fork until it rests on the fork seal. If you've got USD forks, then slide the cable tie upwards to the fork seal.
3. Put the bike back on the ground.
4. Now wearing all your riding gear, get on the bike gently and allow your full weight to settle on the bike in roughly a riding position. Try not to bounce the bike as you do it. You should now be sitting there with your tip toes lightly on the ground stabilising the bike.
5. When everything is stable, get your mate to slide the cable tie till it again touches the fork seal.
6. Carefully get off the bike.
7. The front of the bike needs lifting again until the weight is off the forks. Now measure the distance between the cable tie and the fork seal. Ideally the gap should be in the region of 30 to 40mm. If the gap is too large then increase the preload and repeat steps 2 to 7, if the gap is too small then reduce the preload and repeat steps 2 to 7.

The rear preload:-
1. With the help of that same good mate, you'll owe him a beer after all this lifting, lift the back of the bike so the weight is off the rear suspension.
2. Measure from the centre of the rear axle to a fixed part of the bike above it. Remember this measurement as R1.
3. Put the bike back down.
4. Now wearing all your riding gear, get on the bike and allow your full weight to settle on the bike in roughly a riding position. You should now be sitting there with your tip toes lightly on the ground stabilising the bike.
5. Measure from the centre of the axle to the same point on the bike as before. Remember this measurment as R2.
6. Now the maths. R1 minus R2 should be in the region of 30 to 40mm. If it's greater, then the rear preload needs increasing and repeat steps 4 to 6. If it's less then the rear preload needs reduciing and repeat steps 4 to 6. The R1 figure isn't going to change so there's no need to do 1 and 2 again.

Now we'll go onto the black art of the damping adjustment.
If the bike feels unstable, loose and rather bouncy, then the rebound damping needs increasing. Just try a little at a time until you find the setting best for you. If the bike feels hard and bumpy, then reduce the rebound damping. Again, just adjust a little at a time. Make a note somewhere how much you've adjusted things.
If the bike has a tendency to bottom out under braking, then increase the front compression damping. If it feels too rigid or tends to hop under braking, then reduce the front compression damping. If the back of the bike bottoms out in depressions or feels unstable in fast corners, then increase the rear compression damping. If the back end feels rigid and harsh, then reduce the rear compression damping. Remember to make a note of all the adjustments you've made.

If it all goes wrong, return the bike to standard settings and start again.

hope this helps


Feb 27, 2011 | 2000 Honda CBR 600 F(4)Y

1 Answer

2001 Yamaha XJ 900 S Diversion how to adjust rear shock

Hi, Nodsieboy for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $ you can download another one. For more information about your issue and valuable "Free" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Yamaha Diversion 900 Owner Manual Rear Shock Absorber Adjustment
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Yamaha 95 XJ900S Service Manual
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Oct 08, 2010 | Yamaha XJ 900 S Diversion Motorcycles

1 Answer

2005 harley police bike when I hit a bump in the road it feels like the shocks are bottoming out what could be the problem

The front forks can be stiffened by changing to a heavier weight fork oil. I run 30 weight oil in mine. Make sure you use fork oil because it has a special anti-foaming agent in it.

On the rear shocks, they're adjustable. Just turn the adjuster to put more pre-load on the springs. This requires a special shock adjuster tool.

Good Luck

Jul 20, 2010 | 2005 Harley Davidson FLHR - FLHRI Road...

1 Answer

How to ajust softail shocks ? when i go over rr tracks or bumps on the highway it bottoms out and i have a 200 mm tire on the back and it hits the inside of the fender, i also have another question, when i...

The preload for the shocks is on the shocks themselves which are under the bike make sure you turn them both in the same amount.2nd problem could be your clutch needs adjustment and or you have to much primary fluid in it.You should only fill the primary to the botttom of the diaframe spring to much creates drag and if cluch is out of adjustment creates drag

May 29, 2010 | 2003 Harley Davidson FXSTD Softail Deuce

2 Answers


set the twist-style spring preload adjuster to its lowest setting.adjust the front telescopic fork adjustment, Or change the tire aspect ratio(lower profile)on the rear.

Apr 08, 2010 | 1998 Yamaha YZF-R1

1 Answer

Handling badly very ridgid and unstable arond

i am guessing that you bought the bike secondhand,if so you will probably find that the preload on the front and rear suspension is set to hard,to adjust the rear(some bikes come with the wright tool,but not many)look to the top of the rear suspension shock you should see two locking nuts that go right around the shock,undo the top one(may need to use a large screwdriver and hammer)undo it till about 1/2 inch away from other nut then undo bottom nut and undo till it meets the other nut then sit on the bike and bounce your behind on the seat and see what it feels like it should be softer,repeat the sequence untill you get the suspension feeling the way you want(dont forget to screw the top nut down and lock it tight when you are done,the front forks should have an ajustment for preload,these are normally a simple screw in srew out adjustment,located on the top of each fork leg,screw in(to right) to stiffen up the suspension screw out(to left)to soften up i hope this helps,most ducatis have numerous adjustment for preload,rebound,and damping so what i would do is find a ducati dealer or some one who has a bike similar to yours and get them to run through the various settings and adjustments with you ,you will be surprised at the extent to which you can tune the bikes chassis and suspension to suit your riding style and even the types of road or race track you ride on,i can retune the suspension of my race bike as i have noted the settings for each track i race on and it is worth about 3seconds off my lap times...hope this helps

Jul 05, 2009 | 2001 Ducati 900 SS i.e. N-C

1 Answer

Crf 450 front preload adjustment

Hi ...... Any preload and/or damping will be adjustable from the top of the forks (even upside down forks). Anti-clockwise to reduce, clockwise to increase. You may find that a previous owner has increased the 'weight' of fork oil as a cheap/easy alternative to adjustment or aftermarket linear or progressive springs.

Dec 29, 2008 | 2005 Honda CRF 450 R

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