First oil change and drain plug questions - Kawasaki KLR 650 Forum
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post #1 of 37 Old 06-09-2018, 05:21 PM Thread Starter
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First oil change and drain plug questions

I know it’s silly but I thought I’d ask. Factory drain plug... 15,17 or 21 ft lbs of torque with my torque wrench? Eagle mikes plug I think is 15 But is it 15 because of the shallow low profile hex? I really don’t want to do the drill hole and safety wire business. At least not yet. Bikes got 300 miles on it. My thoughts were first oil change and chain lube and adjust. Hiflo hf 123 filter and 2.5 quarts on rotella 15/40 from Wally World sound good? Thermo bob going on very soon. I’m loving the bike!
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post #2 of 37 Old 06-09-2018, 07:06 PM
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The 15 ft lbs is because of the aluminum threads in the engine case. Not because of the type or size of the drain plug head.

The soft aluminum gasket only Needs 15 ft lbs to get a grip on the engine & the steel plug. One NEEDS to be 100 % certain that they have a gasket on their chosen drain plug, because in-completely Cut threads of cheap drain plugs will WEDGE the drain hole Wide Open if a thick gasket is not fitted!!!!!!

The factory drain plug has 'formed threads', not cut & they go clear to the base of the plug head. They will even usually seal with-out a gasket!

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post #3 of 37 Old 06-09-2018, 08:04 PM Thread Starter
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Well I’ll for sure use the factory gasket and 15 ft lbs sounds good to me. I just don’t want it to back out. Heck maybe I’ll drill the safety wire hole. I don’t want to lol Shouldn’t have to
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post #4 of 37 Old 06-10-2018, 03:43 AM
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Safety-wiring the drain plug may be good practice; or . . . maybe indulging paranoia excessively. How vulnerable is the oil drain plug to inadvertent unscrewing to the point of draining the sump of oil and consequent engine damage? The plug holds nothing in tension, beyond its washer; is the plug subject to inadvertent removal from vibration? Don't think aftermarket plugs are pre-drilled for safety wire, but ain't seen 'em all.

Regardless of specified torque values, I use the, "Braille" method for tightening the oil drain plug--finger tight, then maybe a quarter turn or so more; monitor for leak, then gingerly take any corrective action necessary.

WHY NOT use a torque wrench? The accuracy of torque wrenches at that end (15-17 ft-lb) of the scale isn't the best, and . . . mis-reading or inaccuracy can result in serious consequences (i.e., stripping female case threads).

And, if you should strip the threads, you'll have to read my perennial, "Oversize Oil Drain Plug Repair/Restoration Of Stripped Case Threads" admonition, or else, avert your eyes!
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post #5 of 37 Old 06-10-2018, 10:23 AM
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what Paul said; use 15 ft lbs and call it a day.

Dave
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post #6 of 37 Old 06-10-2018, 10:31 AM Thread Starter
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10-4. Thank you
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post #7 of 37 Old 06-10-2018, 10:45 AM
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I was concerned about the oil plug loosening too, especially after seeing a post here the guy wired it, and considering Iíve had multiple other bolts vibrate loose. But I havenít read of any drain plugs vibrating loose, so Iíve accepted that with proper torque and a good sealing washer itís not a concern.
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post #8 of 37 Old 06-10-2018, 11:34 AM
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Quote:
Originally Posted by DPelletier View Post
what Paul said; use 15 ft lbs and call it a day.

Dave
Any idea why Generation 1 oil drain plug torque is specified as 17 ft-lb, and Generation 2 (if I'm not mistaken) is specified as 21 ft-lb?

Regardless, agree with Dan Filipi's above post; shake-out of adequately torqued oil drain plug unlikely.
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post #9 of 37 Old 06-10-2018, 05:35 PM Thread Starter
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Well I bitbthe bullet and drilled the drain plug and the crankcase bolt. 1/16 drill hole. Chamfered as well. Went to the harbor freight on my street and got the wire and pliers. Pliers are total garbage. Please don’t buy them. I’m on the way in a min to return. I just barely snugged the drain plug and have had to hand twist the wire as the pliers are wasted from 2 mins of use. Alarming thing was with 300 miles on the bike the drain plug was wet with oil before I touched it!!! It was tight and no cracks seen. I’m really concerned about this. I’m reusing the factory washer ( I know I know) as it’s condition is perfect. I’ve been turning wrenches professionally for 25 years and reuse the aluminum washers over and over no problem.
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post #10 of 37 Old 06-10-2018, 06:08 PM
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Quote:
Originally Posted by Damocles View Post
Any idea why Generation 1 oil drain plug torque is specified as 17 ft-lb, and Generation 2 (if I'm not mistaken) is specified as 21 ft-lb?

Regardless, agree with Dan Filipi's above post; shake-out of adequately torqued oil drain plug unlikely.
I suspect it's just another example of mistakes in Kawi factory literature

Dave
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