Topic: Frozen motor

[beelsamin]

I bought a 72 K2 750 in June.The P.O. had said that it hadn't been running in a while and had started to tear it down.He gave up and bought a new bike when he couldn't get the motor out of the frame...he hadn't pulled the oil filter housing
I've got the bike completely apart now and have had the cylinders soaking in every kind of solution I and others on this forum have suggested.
I've dutifully given the kick start a little nudge every day but no luck.If I shift the motor into neutral the front sprocket spins freely.The valves are all ok and the cam chain is fine.
Now I need some advice,I have no qualms about pulling the head and opening the cases but I want to try everything I can to unstick the pistons first.There are 2 things that could be toast that I can think of:
1. The primary chain is munched
2. The tranny is shot
If these are the problem then I open the motor but if anyone has any suggestions I would really love to hear them.
Thanks

[750goes]

take the sump off - then you can check the primary chains -= and also the sump for little bits n pieces....if the motor is stuck really good - back off the rockers, plugs out and pour some kerosene into the cylinders, and let it soak for a week then try move the motor when in gear by the use of the back wheel with the chain connected..--leave the sump off and any kerosene will flow through to the sump anyway..

[bryanj]

Your problem is unlikely to be anything other than pistons/rings siezed to the bores

[beelsamin]

I've pulled the oil pan and the primarys are where they should be,it was suprisingly clean in there but did notice a few and I mean not more than 10 tiny tiny bits of metal in the screen...is this an OH OH ?
I've also poured kerosene in the cylinders and hope this works.

[pae]

I've pulled the oil pan and the primarys are where they should be,it was suprisingly clean in there but did notice a few and I mean not more than 10 tiny tiny bits of metal in the screen...is this an OH OH ?
I've also poured kerosene in the cylinders and hope this works.

From your description, the few bits in the screen don't sound too alarming. I agree with bryanj - time to sit back and let the kerosene do it's stuff.

regards, Phil

[MrZxp]

My 750 was "frozen" when I got it - turns out that 7 years of sitting in a leaky shed on it's sidestand had rusted the starter motor engagement cog to the insides of the left trans cover (along with virtually everything else in there)... taking that cover off and cleaning etc freed things up... only discovered the cause after having already pumped WD40 into each cylinder via the spark plug holes and waiting a week... (oh well  )

Cheers, Phil