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Having my head milled. I bought a new copper head gasket,should I use it?

would anyone recomend using a jetinetics charging flywheel on my 550

I was getting no spark so I pulled flywheel and checked stator after checking everything else and found a wire that was not connected on charging coil.Hope this isnt a really dumb question,but could that be the reason the ski would not start.

I bought a non running 91 550 becuase I wanted the reed motor.I put the reed motor in my running 90 550 and it cranks over but i'm getting no spark.Could it be that the reed motor I installed needs a stator?Thanks

can anyone tell me what the signs are for needing a new crank.My motor is making a groaning noise when I turn it off.Could this be a bearing or seal issue?.Its also running a little different.Its been highly modified for three years now so maybe its the crank? It wont stay started anymore when I...

replaced old bn44 with new sbn44 and so far cant seem to get it right.Could this be a pop off problem?In the water it starts good but will load up and mid and top just isnt as good as old carb.Old bn carb had no low throttle response and very good mid and top.Can anyone help,without telling me...

I just bought a new sbn44 for my modified 1990 550sx..It came with the following settings..120 L 140 H 2.5 needle 80g spring...Does anyone know a better starting point before I get started?