Swampdonkey

Orange springs are the same. You can get different od weight's to go in sheave. Did hot rod sheave drpulley lighter weights and orange secondary spring. Pretty sure it helped but the car that holds clutch in place sheared off in crankcase so not enough riding to tell for sure. Can't find the crankcase so thinking of swapping in a grizzly 660 I have

4 bolts that hold on clutch cage on primary sheave. I lost them ans need sizes and where they go. 2 shorter than the other 2

Rhino clutch parts

I did my massimo 500head gasket. Hardest part was getting timing chain back on and in time

02 sensor maybe. Unplug it see if helps

Motorcycledoctor.com

Also put heat cracks in back

Got secondary spring on went for test ride. I'm guessing Primary wasn't all the way on the splined shaft and the nut worked itself off and ground the grooves away inside the sheave. Time to upgrade to a machined sheave from rhino

Motorcycledoctor.com

Gonna be putting on an orange secondary clutch spring to try and help the underpower issue. Fun machine but is a turd when you need to spin the tires quick. Anyone else done any clutch work. Was also thinking about a new machined sheave later.

Started again next day no smoke anx just smells like burning out mud and whatnot. Gonna ride a little today and check oil and coolant

Had some gouges in head smoothed out with razor put new gasket in. Seems to be running fine. Had some white smoke out exhaust once warmed up but I believe it from old coolant left in there from original problem. 

Helped me to tap gas like I was going to take off but instantly hit brake and it would shift fine

Ordered from motorcycle doctor. Put new gaskets in everything back together and fired right up. But saw bubbles between head and hug. Gonna take back apart and try resurfacing

Figure could get some more power from the bigger 700 piston

Would I be able to get a 700 head and piston to replace my 500? Or is it not that simple . Probably need a cam too? Anyone have info or ideas. Also remember reading somewhere about wiseco 11:1 pistons being compatible 

Just heard back from dealer, says Massimo won't cover warranty due to mud or water in side. Where should I look to buy parts

Looks like blown head gasket.  Temp light came on and started shooting water out exhaust . Should be under warranty  only 25 hrs on it

Got it to start by feathering the throttle . Revs fine dies at idle. Hard to restart probably foiled plug again

2017 msu500 efi. Has spark and fuel. Valves are within clearances.  Leave key on I get a 118 code. Ect sensor? Could this keep it from starting

Old plug was black