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Second hand bikes. Yay. :(

Sport1200

Tuned and Synch'ed
Joined
Jun 5, 2017
Messages
94
Location
Toowoomba Queensland
First oil change to my new-to-me Sport 1200 and I find the sump plug is stripped. What also is fun is the plug is not the correct one- standard is M10 X 1.0 and the one in my bike is M10 X 1.5. I guess previous owner stripped it and said- this will do.... :( He had the left hand pot valves adjusted backwards when I checked it yesterday. He adjusted to .15 inlet .20 exhaust except they were arse about. Easy done I guess. He is a small engine mechanic. A rough one it seems! :( ( I adjusted valves to .10 inlet .15 exhaust)
 
Looks like it is time for a helicoil. Best to drop the pan. Don't forget to get the screws up where the oil filter goes. Also since the pan is down, a as precaution a good time to drop the intermediate plate to put a new gasket there. Several have had issues with that gasket.
 
Good you are checking. I don't have one on the shelf so I can't gauge the threads and I just changed oils in mine so I don't want to pull a drain plug. I will say that a M10X1 would be a very fine thread for an M10. I don't remember it being a fine thread. I hope someone can gauge one for you as I suspect the parts manual is incorrect.
 
M10x1.5 sounds right to me. Use a thread gauge to determine your existing one, and then attempt to retap the sump with the same. If it fails to create a healthy looking thread, then helicoil it as John suggests.

You don't want it to drop out!
 
Reused the gasket? We'll you'd better have a pair of red suspenders in your closet.

I had to replace the sump on V11 Rosso Corsa because it snapped around the side stand bolt. Luckily the sump was cheap @ $200+. I also had to reuse a sump gasket because I only bought one and the Lemans had an aftermarket windage plate which I was happy to see. I'm the 3rd or 4th Owner.

I've never had confidence in something like a helicoil but I'll remember it for a lower tension application.
 
Probably should have replaced the upper gasket (above the spacer) while you were in there Tony. These failing have caused some trouble like lack of oil pressure - it was just another 4 bolts further. Consider doing it - yours is of an age where it might just fail. My 4 bolts were only finger tight and had come like that from the factory.
 
Reused the gasket? We'll you'd better have a pair of red suspenders in your closet.

I had to replace the sump on V11 Rosso Corsa because it snapped around the side stand bolt. Luckily the sump was cheap @ $200+. I also had to reuse a sump gasket because I only bought one and the Lemans had an aftermarket windage plate which I was happy to see. I'm the 3rd or 4th Owner.

I've never had confidence in something like a helicoil but I'll remember it for a lower tension application.
Red suspenders???? My understanding is a helicoil is stronger than the original thread. :)
 
Probably should have replaced the upper gasket (above the spacer) while you were in there Tony. These failing have caused some trouble like lack of oil pressure - it was just another 4 bolts further. Consider doing it - yours is of an age where it might just fail. My 4 bolts were only finger tight and had come like that from the factory.
Shit. I'll keep it in mind for future. Thanks.
 
Don't keep it in mind, do it. All up cost is around $24 for the two gaskets and an hour or so to change them, and you are capable. This is called peace of mind.
 
I've never had confidence in something like a helicoil but I'll remember it for a lower tension application.
When done properly they're at least as good as the original thread.

That said, there are even better alternatives, My 1st choice being "Acme Threaded Inserts". Better variety, stronger thread and easier to insert or remove if you need to. Definitely easier to do a good, solid job if you're not experienced.
 
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