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How To: Yamaha F200 Water Pump Change

 
Old 03-04-2008, 07:32 AM
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Default RE: How To: Yamaha F200 Water Pump Change

I just replaced my water pump again this past weekend. I also decided to replace the water pump housing this time. All of the old parts including the impeller looked good after two years and many hours.

Using anti-seize on all the bolts is a must guys. I had no issues removing the lower unit or disassembly of the pump.

Here is a tip on the woodruff key: Clean the slot that the key sits in with a small wire brush then fill the slot with anti-seize before putting the key in place. This makes mine easy to remove every time.
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Old 03-10-2008, 06:47 PM
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Default RE: How To: Yamaha F200 Water Pump Change

I have twin F250s, is it safe to assume that the procedure is the same as stated on this thread? Andy do you have a complete water pump package including everything I'll need to do the job? Let me know and I'll call to order two packages. Great Post and thanks.

Drew
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Old 04-12-2008, 07:01 AM
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Default Re: How To: Yamaha F200 Water Pump Change

Excellent post! Great pics'!
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Old 04-14-2008, 06:38 PM
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Default Re: How To: Yamaha F200 Water Pump Change

just completed doing my twin 250s. the toughest part was the removal of the wooddruff key. What should have been a one hour job turned into 3hours. I couldn't get the key off so had to buy a torch ($15.00). Placed a wet rag just below the key, heated up the key on the drive shaft, placed a punch on top of the key and nailed it several times with a hammer. It popped off. Had to do the same to the other engine as well. Other then that the job was easy thanks to Andy's pics on this thread.
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Old 04-15-2008, 05:30 AM
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Default Re: How To: Yamaha F200 Water Pump Change

Glad to hear it Drew, but if I can give you a pointer.........when you apply heat what you are trying to accomplish is to get the metal to expand a very small amount. If you heat the key what does it do then? It expands a little.

What you want to get a little warm is the drive shaft directly behind the key. [img]../images/emoticons/thumbsup.gif[/img]

Also....I take the new keys and sand them a little to make them fit easier into the notch in the drive shaft. This make them easier to remove for the next guy.

Andy
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Old 04-26-2008, 07:09 PM
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Default Re: How To: Yamaha F200 Water Pump Change

I just wanted to say this was a great tutorial post and Thank Andy and Lisa at SIM for getting me the parts I needed for my F225. I just got the boat and the motor is going on 5 years old with 160 hrs on it. Figured I'd go ahead and replace the impeller. After taking it all apart, the impeller and assy didn't look that bad, but the rubber was showing signs that it was starting to crack. Glad I went ahead and did it.
I ordered the parts on a Monday and they were at my door on Friday. Great Service, great prices and even loaned me a tool.
Thanks Andy!

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Old 04-28-2008, 10:44 AM
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Default Re: How To: Yamaha F200 Water Pump Change

Yellow,

Glad it worked out for you [img]../images/emoticons/thumbsup.gif[/img]

THTer Hotpsot deserves all the credit for the thread. [img]../images/emoticons/smile.gif[/img]

Thanks,

Andy
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Old 05-03-2008, 06:42 PM
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Default RE: How To: Yamaha F200 Water Pump Change

Thanks for this thread and the great pics. Last week I must have picked up some plasitc on my lower unit and my pump ran dry. I have it all apart and waiting on parts.
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Old 05-14-2008, 01:00 PM
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Default Re: How To: Yamaha F200 Water Pump Change

if i remember correctly there was a tube that had to be cut when removing the lower unit on an f250? I can't seem to find the picture from here.
Andy am I thinking correctly?
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Old 05-25-2008, 07:55 PM
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Default RE: How To: Yamaha F200 Water Pump Change

On the 150/4s there is no tube to cut; its a socket-and-fitting O-ring sealed connection for the speedo pitot.

Piece of cake. Oh, if its the first time its been apart I've noted that Yamaha has a habit of gluing the stainless steel cage into the plastic housing. How nice of them - NOT! You need to find a place where you can position the housing with the cage open so you can knock it out.

Also, clean the keyway and sand (using a dremel) the replacement key, then lubricate the keyway before installing the new key. This way the NEXT time you take it apart the key will come out without having to use extraordinary measures.
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Old 06-20-2008, 04:01 PM
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Default RE: How To: Yamaha F200 Water Pump Change

These photos made it much easier. As so many people have experienced I fought with the woodruff key for an hour or so. Ended up drilling a hole in the top edge of the key and using punch to pound it out.
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Old 06-21-2008, 08:42 AM
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Default RE: How To: Yamaha F200 Water Pump Change

On my first water pump replacement on my F225's the woodruff keys on both engines didn't want to come out. I ended up using a cutting disk on a Dremel tool to put a deep longitudinal cut in each key, then collapsed them with vice-grips. They came out very easily, and really wasn't much work. Just need to make sure you dont cut past the key into the shaft.

Bill
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Old 08-05-2008, 06:27 PM
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Default Re: How To: Yamaha F200 Water Pump Change

What torque should you use on the water pump housing and lower unit bolts?
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Old 02-09-2009, 04:48 AM
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Default Re: How To: Yamaha F200 Water Pump Change

I just used this tutorial to change out my impellors in my twin F250s. What a breeze. The 1st one took me about 45 minutes (only because of the woodruff key) After 10 minutes with a screw driver, awl and hammer, I had to heat it up the hit it quicky with the air hammer and it popped right out. The 2nd one took me less than 1/2 hour. Too damn easy!!!
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Old 02-13-2009, 02:58 PM
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Default Re: How To: Yamaha F200 Water Pump Change

Thanks so much for taking the time and effort . The photos regarding the water pump are fantastic !! I remember seeing a similiar post last Fall regarding changing the oil and filter in a Yamaha 250 4 stroke. Tried to find it again recently without success. Can anyone help me. Thanks !
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Old 02-28-2009, 08:24 PM
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Hi Bob,
Nice pictures and instructions. I have a Yamaha F150 2007 that I would like to change the water pump this spring. Do you know if the process is the same as your F200?

Thanks
Al
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Old 03-09-2009, 05:08 AM
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Default trouble lowering the gear case

Hi ,
I am having trouble lowering the gear case on my 2006 Yamaha 90hp to change the impeller.
All 6 bolts are remove and I have lightly tapped the lower case with a rubber mallet with no luck. I am worried if I get to carried away with the mallet I may break the cavitation plate, the motor has only done 100 hrs, any help would be greatly appreciated.

Cheers Stano

NT Darwin
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Old 03-09-2009, 06:16 AM
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Originally Posted by stano View Post
Hi ,
I am having trouble lowering the gear case on my 2006 Yamaha 90hp to change the impeller.
All 6 bolts are remove and I have lightly tapped the lower case with a rubber mallet with no luck. I am worried if I get to carried away with the mallet I may break the cavitation plate, the motor has only done 100 hrs, any help would be greatly appreciated.

Cheers Stano

NT Darwin
Stano,
Did you remove the round zinc anode? There's probably a bolt under that.
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Old 03-09-2009, 06:24 AM
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Default did mine

I got my pump from SIM for 2006 yami 150 hp 4 stroke. Did it this weekend. Photos helped alot only stripped zinc when removing bolt. I buttoned all up and tried double ear muffs for a few secs, no water out pee.

Removed vents at water inlet,tried a recyling tub since my barrel wasnt big enough, it looked like it covered up inlet hole totally,ran for a few secs, no water out pee hole. Seen a few posts about this trouble.

Hooked up boat and went down to ramp, dunked motor totally in water and it worked fine. So before you take it apart again to check what's wrong, try it at ramp! Thanks for the photos ,it helped alot!
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Old 03-09-2009, 03:01 PM
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Originally Posted by fish4striper14 View Post
Stano,
Did you remove the round zinc anode? There's probably a bolt under that.
Yes, I have removed the 2 bolts under the anode, will have an other crack at it this arvo after work.
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