The water pump on the WR300 has a drain bolt on the cover. How tight is that bolt supposed to be? I did a once over on the bike today and it seemed loose. I tightened it a little but it seems that it doesn't really want to tighten up. It looked like it had a little o-ring in there. I pulled the bolt out to check the threads and all looked well. Oh yeh, when I pulled the bolt out just a little bit of fluid came out. I figured being a drain bolt I would have lost a lot of fluid? Please advise!
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Hi everyone,
As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.
When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.
Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.
Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.
Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.
Thanks for your patience and support!
250-500cc 09 Wr 300 water pump ?
- Thread starter redbone
- Start date
Rusty 2
Husqvarna
A Class
It has a washer with a rubber o-ring type seal built in to it around the hole. I just snug mine up with a little 8mm T handle, about as tight as you would a trans oil level check plug, and it stays snug.
Now, the thing that bothers me,......When you pulled the plug a stream of coolant the diameter of the drain hole should've shot out at you and continued until either you replaced the plug or the entire cooling system had emptied!
Take the radiator cap off and check to make sure it is full of coolant. If it is then remove the drain bolt and rod out the hole with a piece of wire or something. If nothing comes out still, remove the water pump cover via the two bolts on either side of the drain bolt, and check for an obstruction of some sort. If there isn't anything apparent, then the only other thing I can think of is un-drilled out water passages in the lower cylinder like Sooper Arthur had on his 250,........But Krieg had this bike for cryin' out loud,....If there was anything like that wrong with it he'd have surely found it long ago.
Now, the thing that bothers me,......When you pulled the plug a stream of coolant the diameter of the drain hole should've shot out at you and continued until either you replaced the plug or the entire cooling system had emptied!
Take the radiator cap off and check to make sure it is full of coolant. If it is then remove the drain bolt and rod out the hole with a piece of wire or something. If nothing comes out still, remove the water pump cover via the two bolts on either side of the drain bolt, and check for an obstruction of some sort. If there isn't anything apparent, then the only other thing I can think of is un-drilled out water passages in the lower cylinder like Sooper Arthur had on his 250,........But Krieg had this bike for cryin' out loud,....If there was anything like that wrong with it he'd have surely found it long ago.
