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GS 500 few questions

Discussion in 'Maintenance and Servicing' started by TeeKey, Oct 20, 2014.

  1. Hi guys ,

    I'm pretty new to riding and as a first motorcycle I bought Suzuki GS 500. However as I am only learning about this motorcycle I thought I'd ask few questions.

    1. suspension. Ive read that GS tend to have a pretty soft front fork. I'm about to send mine for service and was thinking of putting 20w oil into the front? Have you tired that and if so, did it work? It doesn't really bother me much but since it's going for a servo I thought I might try and improve it.
    1B. Suspention. What preload setting would you recommend for the rear? I'm about 83kg
    2. rear breaks. They squeak a lot? Did you have the same issue and how to go about it if at all?
    3. If any of you could also tell me how much should I expect to spent on the major 24k service that would be great. I'm on 22350 so approaching quickly.

  2. Learn how to service it on your own. Put a $20 set of pads in the back. Do everything u can for the big service. U prob need to pay to get valves checked if your fussy.
    • Agree Agree x 1
  3. I would check what grade of oil is used by the factory, and then talk to some experienced bike mechanics about whether or not to change to a thicker grade of oil. The oil will effect the compression and rebound damping, but will not change the preload at the front. There is a thread on Netrider somewhere that had an excellent instruction on setting you preload. From the postion of no weight on your rear suspension, to the weight of the bike plus your weight on the seat, the suspension should sag about 30 to 35 mm. Adjust your rear preload to achieve that sag.
    • Informative Informative x 1
  4. My rear brakes used to squeal like a banshee. The pads had plenty of life left in 'em, but they were polished. A light rub down with some fine sand paper (use a block) did the trick for me.
    • Like Like x 1
  5. The problem is that the springs are simply too soft, so changing the oil will be of limited benefit. At 83kg, I think you're heavy enough you should invest in new springs, which should set you back about $100 (plus labour -which I'd guess at being ~100, maybe 200- but it's quite easy to DIY). This will give far better results overall.

    Many people recommend progressive springs for the GS (which get progressively firmer as they compress), but linear springs are more predictable (in that they'll be more consistent throughout the range of movement) so I do recommend having a bit of a read up on things or simply chatting to your mechanic/a suspension specialist (if you're lazy). It's also a good idea to match the stiffness to your weight if you can, but I'm afraid I don't know enough to give you any pointers there.

    Another potential upgrade is the rear suspension; I believe an R6 shock will pretty much bolt straight on (may only be specific years of the R6, and I may be forgetting details. Look it up :p). A little more involved, but you should still be able to DIY.

    First of all, check the wear. If you have plenty of break pad left, try what jazzfan suggested.
    • Like Like x 1
  6. Thanks guys.

    I really appreciate your advice. I think I will pass on 'fixing' the front forks for now. As far as service goes... Will do as much as I can and the rest will leave to the professionals.

  7. an indicator the oil might be too light is if the bike is diving too much under brakes.

    But as Kohhop noted, the GS is known for having springs that are too light. so a heavier oil may benefit somewhat, but a little more investment is needed to get more positive results.

    The GS is probably designed for a 60-70kg person, so that's a good indicator of the design point of the springs.
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