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Post by capob on Jun 24, 2016 6:58:48 GMT -5
pistonguy is there any way to check for crank seal leaks without disassembling much of the engine? Here's pics of the base gasket  
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Post by capob on Jun 23, 2016 15:52:35 GMT -5
lain When I installed it it wasn't protruding from the sides, since the dealer replaced it it sticks out. I ordered a new gasket and piston rings, they should arrive next week, I hope that fixes the problem. 
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Post by capob on Jun 22, 2016 16:45:32 GMT -5
I broke broke the ring because I didn't knew about pins at that time and the rings were not aligned with pins, this made sure the rings broke when I forced them into the cylinder.
I don't have the space at home to open up the engine but whilst looking at the underside I noticed the head gasket was sticking out for 2-3mm. Is this normal or could it contribute to the power loss I face daily?
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Post by capob on Jun 22, 2016 7:58:34 GMT -5
pistonguy i'm very sure it's a two stroke however this is in the service manual:   Also, my rings aren't flexible at all, I broke this pair while trying to reinsert the piston in the cylinder. 
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Post by capob on Jun 21, 2016 13:00:26 GMT -5
Both piston rings were broken, I got a new set and installed them.
With the new set there was a third smaller and very flexible ring but I didn't recall removing a third ring.
After the replacement of the rings I saw in the service manual there should be something under the bottom piston ring. Could the lack of that extra ring be the cause of the problems?
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Post by capob on Jun 20, 2016 17:55:23 GMT -5
Hi
I have a 50cc 2 stroke scoot which ran completely fine until the crankshaft got jammed.
I disassembled the cylinder but broke the piston rings, I got new 2 new rings from the dealer and installed them but the crankshaft was still stuck. I got the scoot to the dealer and he found that the piston bearing shattered and a piece got stuck between the crankshaft and the crankcase. He replaced the bearing, spark plug, vario pulley, vario nut, reed valve and head gasket.
Now the scoot doesn't run like before.
-It uses more fuel
-It doesn't accelerate as powerful as before
-The exhaust gets extremely hot
-After a while riding the scoot bogs down to idle and stays there, it won't react to throttle anymore until it idles for approx. 30 seconds.
Any tips or advice would be very welcome
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