k1200s rattle first second after start - K-Bikes.com - Excellence in Motion
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post #1 of 3 (permalink) Old Sep 8th, 2018, 12:18 pm Thread Starter
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k1200s rattle first second after start

please whatch this video ,its normal or not ???ratlle sometimes after start ,but not all the time ,please need help

If the second to build oil presure?
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post #2 of 3 (permalink) Old Sep 15th, 2018, 8:44 am
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That rattle is the Hydraulic Timing Chain Tensioner has lost it's oil while sitting then once started, fills and snugs up the slop in the chain. I personally haven't had it happen but a riding buddy developed it in his '05 K 1200 R. He replaced the tensioner with a stock unit ($$$). There is an after market job that is spring loaded but I have no personal experience with them; Sounds like a good idea if it's decently made.

The biggest concern about the problem is that if it get's bad enough, You can start jumping teeth on the sprocket. These are high interference engines, meaning if they get out of time, valves start hitting the tops of the pistons and valves start hitting valves. The valve heads break off and fly around in the cylinder and combustion chamber. if a valve head get's stuck edgewise in a piston, it has nowhere to go so the con-rod gets bent to shit as well and there goes your lower-end. It's all over but the pissing and moaning. So yeah, fix this.

it's the cylindrical can about an inch in diam. standing about 2 inches high on the right side for the motor between the 2 front upper motor mounts. it's held in place by 2 easily accessible bolts.
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post #3 of 3 (permalink) Old Dec 10th, 2018, 8:11 pm
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There is an upgrade you can do to fix the rattling. I did mine. Get the new timing chain plunger and remove the entire old one. The old style looks flush like a cap. The newer one has an oil reservoir and is about 1 inch long. It comes with directions. There is also an aftermarket one you can buy. While you are at it, remove the large round aluminum inspection cover down on the bottom right. It takes a large torx. After removing the cover look to see if your bike has the plastic sprocket and chain guard on around the bottom sprocket. If it has not been installed, order it also. It's about $8. But you will have to remove the clutch cover and then just push it on. There are instructions on this site to do that too. You will have to order new bolts for the clutch cover. They are use one time only.
After these upgrades the rattle will stop, you can then quit worrying about the chain jumping.
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