The engine turns over slowly

Discussion in '610/630' started by Lime, Aug 23, 2010.

  1. Lime Husqvarna
    A Class

    Location:
    Sweden
    I have a Husqvarna SM610S from 1999 that's really hard to start.

    One day I was on my way out fore a ride the bike dies after 500 meters just like it got no fuel. And after that the it the engines just turns over slowly.

    I checked the piston, cam, cylinder. The battery, every wire and connection. Everything is mmmkay. When the bike starts it runs fine but it just take ages to start it.

    I thought it was the auto decompressor spring so I changed the cam to another used one. But the trouble remains.

    Am I missing something? Whats happens if I take the old cam and just change the spring? Will the engine turn over faster? Ore can it be another problem?
  2. Lime Husqvarna
    A Class

    Location:
    Sweden
    You guys are really helpful... Not a single answer.

    Well I am chasing a ghost so here is another question I cant find the answer to in my workshop manual.

    What jetting should I use? I am at sea level and the temperature is about +18C.

    The last owner had a 198 main and that feels way to big. A 62 in low speed nozzle, and the original K32 (?) needle in the 3 clip.

    It feels like the bike suffocates in it own fuel when I am trying to start it.

    It has the orginal Delorto carburator.