Swm 500r 2016

Discussion in 'Husqvarna Cousins - Cagiva, etc' started by Rytis.Jar, Aug 9, 2020.

  1. Rytis.Jar Husqvarna

    Husqvarna Motorcycle:
    Hey guys,
    I have recently done engine rebuild on my SWM500r RS 2016 which had 230hrs. The crankshaft main bearing got exploded by surprise. I have changed all the bearings except rod bearing, new oil pump, new cylinder and piston with rings. After reassembling the engine it was running very well for about 10-15 hours. When it is cold everything is fine, but I noticed that when the engine gets warm I can hear strange sound that occurs in the head, I cannot explain, but it seems like knocking sound.

    I did proper engine break in procedure and did frequent oil changes 3 times during that period. Valve pads are fine, cam tensioner as well.

    What could cause this sound coming from the head?

    I leave video link for you.

    Thank you so much guys for your time and opinions.

    View: https://youtu.be/vS0Pt4b030k
  2. 268fords Husqvarna
    Pro Class

    Powell, Wyoming
    Husqvarna Motorcycle:
    08' TE510'
    Other Motorcycles:
    Honda CRF 100, Kawasaki KLX 110
    Kind of sounds like the cam chain. Maybe the auto tensioner.
  3. Rytis.Jar Husqvarna

    Husqvarna Motorcycle:
    The engine is already dead. It was a crank rod bearing, which was causing that sound because piston was hitting exhaust valves and eventually it just died. Small debris went through all the engine and cylinder, piston got damaged. So if you notice sometimes small debris that stick to drain plug magnet in short period after oil change be aware maybe of bad bearing somewhere. Be safe and love your bikes guys!