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Old 03-26-2011, 01:24 PM   #1 (permalink)
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97 MXZ 583 Hard to pull over!

A few weeks ago a friend and I were riding my sled and we burnt up a piston. So we ordered new pistons and gasket kit from Dennis Kirk. We put it all back together yesterday and it is literally hard to pull over unless the plugs are out. I can barely get any revolutions on the motor unlike before. We put the pistons and everything in right. Is it supposed to be that hard to pull over?
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Old 03-26-2011, 02:27 PM   #2 (permalink)
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Did you flush the base before reassembly?
Did you use oil on the cylinders and bearings before reassembly?
Pieces of piston are likely embedded into the bearings by now which means you will have to replace them.
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Old 03-26-2011, 02:46 PM   #3 (permalink)
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Yeah, we cleaned it all up and made sure there was no metal in the base. Changed fluids and all. My buddy thinks that its just because they are new pistons and its gonna be hard to pull over. Me on the other hand I disagree
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Old 03-26-2011, 02:58 PM   #4 (permalink)
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You're right, it should not be that hard to pull over, no harder than it was before. Even if the compression is much higher (140 rather than 120), the difference should not be that much more noticeable.
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Old 03-26-2011, 03:03 PM   #5 (permalink)
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It might just be me, but it seems like I can't get the revolutions like I used too. With the plugs out it will rotate like no other. I'm not very smart when it comes to sleds, I'm more of a car guy, but always willing to learn. Even though I know this isn't the smartest thing, I can burn off the gas in the cylinder with a long lighter and get the piston to go down no problem. I thought maybe I was getting too much fuel so I drained my carbs and put just a few drops of gas in each cylinder, but it still don't even want to start!
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Old 03-26-2011, 10:32 PM   #6 (permalink)
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did you have the cylinders bored ? if you scored the cylinder it will be hard to pullover
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Old 03-28-2011, 07:18 AM   #7 (permalink)
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Lok into the cylinders with a flashlight and see if they are scored.
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