Forgot to put on crush washer - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 23 (permalink) Old 08-21-2020, 11:24 PM Thread Starter
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Forgot to put on crush washer

So, changed the oil, and was emptying the old back into my old containers, and found my crush washer in the bottom of the pan. I already put my oil drain plug in, and added new oil. I haven't rode yet, as I am waiting on my fork seals, but should i drain the oil and put the crush washer in, or if I dont, will it leak? Not a big deal emptying and putting back in, I was just wondering.

2014 Yamaha FJR1300 Burgundy with 16K on the clock
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post #2 of 23 (permalink) Old 08-21-2020, 11:42 PM
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It's probably gonna leak without it.
You might remove the fill plug and if you can get a vacuum cleaner hose to seal off fairly well around it, that will allow you to remove the drain plug without losing any oil. This will probably require two people but it will work.
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post #3 of 23 (permalink) Old 08-21-2020, 11:48 PM Thread Starter
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I figured as much. I will pick up a crush washer tomorrow while picking up my forks from the dealer. I was just being lazy. Thanks for the reply.

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post #4 of 23 (permalink) Old 08-22-2020, 12:08 AM
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I wouldn't mess with it until I knew whether it's gonna leak or not. My F150 was washerless for alotta yrs and never leaked.
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post #5 of 23 (permalink) Old 08-22-2020, 01:51 AM
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Personally, I wouldn't take the chance and find out it's leaking on some back road without reception to call anyone to come get me. I know it's a pain, but there's no way I would leave that alone without adding that back in. My 2 cents, whatever those are worth.

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post #6 of 23 (permalink) Old 08-22-2020, 07:41 AM
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If it were me, and the plug is tight, clean it good get the oil hot and see if it weeps at all, if it does then drain & put a new washer in. Like Russ I’ve done a few where I forgot the washer & ran it for quite a while w/o issue. So long as the plug is tight the worst thing that’ll happen is it’ll weep a little, no catastrophic failure just a little weepage at the worst, I’d run it and put the washer in at the next oil change, my opinion.
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post #7 of 23 (permalink) Old 08-22-2020, 07:55 AM
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If it were mine, I'd replace it for peace of mind so you don't have to think about it. While the drain plug may be torqued tight enough and may never loosen, the washer partly serves to keep the drain plug from any loosening by vibration. I personally use the Honda flat aluminum washers.
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post #8 of 23 (permalink) Old 08-22-2020, 11:29 AM
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If you are quick you can remove the plug and put your finger in the plug hole. Ask someone to fit the new crush washer and reinstall the bolt. You will lose very little oil, so just check the level - easy. I would not risk riding without it.
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post #9 of 23 (permalink) Old 08-22-2020, 11:43 AM
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Use a Dowty washer, fit and forget.
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post #10 of 23 (permalink) Old 08-22-2020, 03:18 PM
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I still have the original crush washer the factory put on in 2007 installed. No leaks, no drips, no weeps, nothing. A crush washer function is totally over rated IMHO. Never used a torque wrench on the drain bolt either. I guess I'm living a Walt Disney life in a fantasy world by not over thinking it . I'd leave it alone but yeah, if it's gonna gnaw at you install the old or replace it with new, whatever. I don't think you're going to harm the bike or yourself going either way. If I were going to install/replace it, I'd just do the finger in the dike thing and pour a little back in if needed.
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Last edited by rbentnail; 08-22-2020 at 03:21 PM.
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