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Old May 6th, 2007, 08:27 PM   #1
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How do you set the chain tension on a 1098?

Hi There,

Just got my 1098, and it's just flat out fun. Looked at the chain today after a ride, and decided I need to know if it's in spec or not. Looked thru the owners manual (I know - and I call myself a guy!) and find it states this is to be done by my dealer.

Now they are nice enough folks, but setting the chain seems to me to be something all owners should be able to do. So, anyone have the skinny on how it's done? I see on E-bay a German company makes a socket tool for the rear wheel nut - so armed with that and a factory suggestion on what to twiddle- we all need not fear the long bike trip without the shelter of a dealer!

Thanks!

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Old May 7th, 2007, 04:03 AM   #2
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loosen the 2 bolts on the rear of the swing arm at the centre of the wheel, then with a "C" spanner you can adjust thew chain by turning the adjuster behind the rear sprocket. I was told on the weekend that you can hit a plastic wedge in the crack and turn it with your fingers but I haven't tried this. If it's loose just drop into your dealer and they'll do it for nix. Make sure you have your weight on it when you check it it should be okay.
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Old May 7th, 2007, 08:50 PM   #3
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Thanks, I'll try it tonight!
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Old May 10th, 2007, 04:49 AM   #4
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Do yourself a giant favor and get the service manual CD. It's excellent.

Lee
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Old May 10th, 2007, 06:37 PM   #5
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where do you get the service manual cd and how much does it cost? Thanks
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Old May 10th, 2007, 08:39 PM   #6
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Quote:
Originally Posted by e3xtrella04
where do you get the service manual cd and how much does it cost? Thanks
Ya, what you said. I want one too.

I know slob got one, because he posted some great photos on the oil chaing thread.

So slob, help us out here?
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Old May 11th, 2007, 12:47 AM   #7
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Adjusting the chain tension
Move the motorcycle slowly until you find the point at which the upper section of the chain is most taut.
Place the motorcycle on its sidestand.
Push the chain upwards with a finger in correspondence with the centre of the swingarm (see adhesive label).
The bottom run of the chain must be able to deflect 33 to 35 mm.

To adjust the tension, proceed as follows:
Slacken off the two clamp bolts (1) that secure the rear wheel hub to the swingarm.

Fit service tool no. 88713.1038 inserting its tooth in the eccentric hub (2).
Rotate the eccentric hub (2) to obtain the correct chain tension.
Rotate the hub anti-clockwise to tighten the chain or clockwise to slacken it (as viewed from left-hand side of the bike).

Important
An incorrectly tensioned chain will lead to accelerated wear of the transmission components.
If the clamp bolts (1) are removed, lubricate the threads and the underside of the head of each bolt, then tighten the bolts (1) to the specified torque in the sequence 1-2-1.
Warning
For the safety of the passenger, it is essential that the eccentric hub clamp bolts are correctly tightened (Sect. C 3, Frame torque settings).

Got my service manual from Southern California Ducati $60us for the C.D Postage to Aust was more!!! any Skips wanna pm me about it fine.
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Old May 11th, 2007, 02:52 PM   #8
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Thanks slob, I am ordering one today.
I love the photo of you and your 1st Duck in your album.
My 2nd was a 1976 860 GTS, not near as cool as yours.
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Old June 7th, 2007, 09:03 AM   #9
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Sorry about the lamness but for the life of me I couldn't find the Nm's in C-3 for the eccentric bolts. Someone said 24ft lbs which is about 32.5Nm's, but when I loosed the eccentrics, my fancy tool said 38.2 Nm's. Not that I'm doing my own maintenance.

Another point.

I'm assuming, between the centers (about 10.5") of the sprockets, you measure from the bottom of the swing arm to the center of the chain and deflection (33mm-35mm) or about 1/16th" should be observed.

Seems tight to me; anyone else have their scientic points of view?
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Old June 10th, 2007, 01:41 PM   #10
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Tight Chain

Quote:
Originally Posted by weldingshop
I'm assuming, between the centers (about 10.5") of the sprockets, you measure from the bottom of the swing arm to the center of the chain and deflection (33mm-35mm) or about 1/16th" should be observed.

Seems tight to me; anyone else have their scientic points of view?
The tolerance of 2mm is about 1/16". The deflection should be 33-35mm which equals about 1-3/8". It's better to set the chain a little bit too loose than too tight.
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