Thread: My GP1200R Redo
06-13-2010, 08:04 PM #1
My GP1200R Redo
So I bought my 00 gpr about a year ago. It came with a ride plate and intake grate and other different things I eventually found out (and probably more still to find). This is my first ski and I was very excited to finally get one. The engine is a new SBT engine that supposedly had 3 hours when i bought it. Ran it all last summer and then started to have a lean runaway as I started it out of the water. So I was dumb and let it sit over the winter and now decided to start working on it.
I figured to start by getting the carbs rebuilt and putting a new stock head that the guy gave me with the ski. I sent my carbs to osidebill and found they were complete junk so he gave me a great deal on a set of freshly rebuilt carbs jetted to what i needed and with dual feed setup.
new carbs from bill
all installed with prok fa's
So after getting everything hooked up the ski was not getting any gas to the cylinders, so i figured it may be the crank seals so i decided to take the engine out since I wanted to check everything out anyway.
06-13-2010, 08:07 PM #2
just got the flywheel off
all of the parts
had some time so i took my stickers off
Now i am about to split the case. Any tricks or advice to get this done?
06-14-2010, 09:20 AM #3
- Join Date
- Jun 2009
Lookin' good so far. You'll be surprised at how easily the cases come apart. I used a low power 1/2" impact wrench (Coleman) to get them apart. If you find it doesn't come apart easily, you probably missed a bolt somewhere like I did. Once you get everything apart, I recommend chasing the bolt holes with a tap to get all the old locktite out.
06-14-2010, 11:43 AM #4
it feels tight so ill check all the bolts to see if i missed any
06-19-2010, 10:32 AM #5
got the case split last night. how do i get the rear oil seal off?
06-19-2010, 10:43 AM #6
Nice clean work You have to remove the PTO coupler off the crank to remove seals. I use a yamaha coupler removal tool that I bought through Riva. I know sbt recomends a chain wrench but Ive seen people us them and it leaves teeth marks.Im sure lots of companys carry them as well. Is the SBT crank trued/welded?
06-20-2010, 09:28 AM #7
Thanks! The crank is welded and i would guess it is trued too. Should i check it with a dial indicator before i put the crank back in?
06-22-2010, 06:11 PM #8
- Join Date
- Jun 2009
You don't need a special tool to take off the coupler. Just put the crank in a vise and cushion it with wood or cardboard. It doesn't have to be very tight, just enough to keep it from spinning. Wrap a rag around a long breaker bar and stick it between the teeth of the coupler. This should work for you. It's also a standard thread so counter clockwise will do the trick.
06-22-2010, 10:47 PM #9
yea i was just thinking about putting a breaker bar in there to turn it. also good to know that it is standard thread, thanks
06-24-2010, 04:44 PM #10
got the seals and cylinder gaskets today. i was looking at my crank and noticed one of the bearing pins broke off. Does this need to be replaced? Can i drill the old one out and put a new one in if it needs replaced?
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