Question about 2004 Yamaha YZ 450 F

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06 yz450f water pump swap

What does it take to remove the impeller from the shaft. is it threaded on. if so right hand or left threads. i tried to break it loosed in the normal direction seemed awfully tight didn't want to force the issue and break something. Thanks for any insight.

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The nut on the shaft is a conventional right hand thread nut. Righty tighty lefty loosy. For future reference, if Yamaha uses a left hand thread on a fastener, there is always a line cut through the hex to warn you it is left hand.

Posted on Sep 25, 2009

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How to remove impeller from davey pump 5255H


impeller thread is left hand
remove the fan cover at the end of the motor to hold the shaft and undo the impeller in a clockwise direction

Dec 30, 2016 | Pool & Spa

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What is the thread on coupler to midshaft left or Right? this is on a yamaha waverunner 1200xl limited


Counter clockwise, it has normal right handed threads. The only part with left handed threads is the pump/impeller shaft.

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How to remove impeller on Pentair ultra-flow pump


Remember to remove the impeller locking screw (left hand thread) before attempting to unscrew impeller.

May 05, 2013 | Pool & Spa

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How can I remove/separate the pump/impeller from the pump Housing?


No. Do not try to unscrew the impeller! If yours is a housing with motor attached just grab the part that has the O-ring and pull it straight out. Though you may need to kind of wiggle it as you pull. Do it over a sink, the liquid in the housing is gray water and can be dumped. The impeller shaft cannot be bent and impeller must be firmly attached to the shaft. If it is bent or loose on the shaft it will not pump properly. If it's solid and straight it should work. Put some petroleum jelly on the O-ring before reassembly. I also like to coat the threads of the filter cap befor screwing it into place.

Jan 30, 2013 | Washing Machines

1 Answer

TDA200 Recirculating pump how to replace impellor


There are a number of screws on the pump housing opposite the motor that can be removed to open the pump and expose the impeller. Some pumps have a screw into the center of the shaft that helps keep the impeller from spinning off the shaft. It often is a left handed screw. Once any center screw is removed the cover on the other end of the pump should be removed to expose the end of the motor shaft. This end of the shaft should be held solid with a wrench while the impellor is unscrewed. These threads are usually right handed. The process can be reversed with a new impeller. I hope this helps.

Aug 13, 2011 | Pool & Spa

1 Answer

Winding noise with some water leaking from the motor seal. Water still flowing but sounds laborous.


The shaft seal more likely than not needs to be replaced. If your shaft seal has been leaking for any length of time, the bearings could be damaged and this should be replaced. The whisperflow uses a PS1000 shaft seal and is fairly easy to replace (most seals available online or at most swimming pool retail stores). It is best advised not to run the pump until you have had this inspected by a licensed pool technician or have changed out the seal.

1) Make sure breaker/power to pump is off. 2) Remove the six bolts holding the wet end to the seal plate. 3) Remove the diffuser to expose the impeller. 4) Remove the screw in the middle of the impeller by turning clockwise (left hand threads). 5) Remove the dust cap at the rear of the motor and use a wrench to hold the shaft while you remove the impeller by turning counterclockwise. 6) Once the impeller is off, remove the four bolts holding the seal plate to the motor. 7) Press the old seal out of the seal plate and clean it thoroughly. Remove the ceramic part of the seal from the impeller and clean it thoroughly as well. 8) Apply a thin coat of lube (I prefer Magic Lube or Lube Tube) to the seal plate and impeller where the new seal will go. 9) Remove the new PS1000 shaft seal from the box (being careful *NOT* to touch the ceramic or carbon face with your fingers), press the metal part into the seal plate carefully, try not to bend the metal and make sure its completely seated against the seal plate. 10) You can now install the seal plate back onto the motor and secure with four bolts. Press the ceramic part into the impeller, use cardboard or paper between your fingers and the ceramic face. 11) Once you have seated the seal into the impeller, hold the motor shaft and thread the impeller on until snug, then reinstall the stainless screw, remember it is left hand thread so you'll have to turn it counterclockwise. 12) Reinstall the diffuser over the impeller and then install the wet end onto the seal plate using the six bolts, don't overtighten them.
Check the pump for operation and you should be good to go!


Dec 07, 2010 | Pentair 011515 WhisperFlo FullRated Energy...

1 Answer

I have a whisperflo. I've ran the motor without water and it's quiet. Add water and it makes a pretty good racket (not a bearing whine). I've even tested without my filters to eliminate head pressure) ...


Yes the impeller is screwed on right handed normal thread. *** Info below pasted form one of my other posts *** You need to lock the motor and unscrew impeller. Depending on the motor, you remove a cap in the middle of the tail piece and hold with a wrench, (usually 9/16") or remove a cap that covers the whole end and grab the shaft with a wrench (usually 7/16") by sliding it under one of the components (not sure exact part off top of my head have to look at it) and then turning impeller. If the impeller has a bolt or screw in the middle remove that first. (you already did this.) It should be reverse thread so make sure you don't turn the wrong way and break or strip. If there is no screw, or after you've removed it, just spin the impeller off (it should be counter clockwise standard thread). If you can't do it by hand and assuming you don't have an impeller wrench, be very careful and use a large pliers, pipe wrench, or strap wrench to loosen it.

Sep 28, 2010 | Pentair 1 hp WhisperFlo InGround Pool Pump...

1 Answer

1hp whisperflow pump, seal change. How?


Make sure breaker/power to pump is off. Remove the six bolts holding the wet end to the seal plate. Remove the diffuser to expose the impeller. Remove the screw in the middle of the impeller by turning clockwise (left hand threads). Remove the dust cap at the rear of the motor and use a wrench to hold the shaft while you remove the impeller by turning counterclockwise. Once the impeller is off, remove the four bolts holding the seal plate to the motor. Press the old seal out of the seal plate and clean it thoroughly. Remove the ceramic part of the seal from the impeller and clean it thoroughly as well. Apply a thin coat of lube to the seal plate and impeller where the new seal will go. Remove the new PS1000 shaft seal from the box (being careful not to touch the ceramic or carbon face with your fingers), press the metal part into the seal plate carefully, try not to bend the metal and make sure its completely seated against the seal plate. You can now install the seal plate back onto the motor and secure with four bolts. Press the ceramic part into the impeller, use cardboard or paper between your fingers and the ceramic face. Once you have seated the seal into the impeller, hold the motor shaft and thread the impeller on until snug, then reinstall the stainless screw, remember it is left hand thread so you'll have to turn it counterclockwise. Reinstall the diffuser over the impeller and then install the wet end onto the seal plate using the six bolts, don't overtighten them.

It is a good idea to replace the tank o-ring when taking to pump apart, but if the o-rings are in good condition, just apply a light coat of lube and reuse them.

This is a general guide for replacing a seal, if you have trouble removing the impeller, you may need an impeller wrench and a tool to hold the motor shaft.

I hope this helps, if you have any specific questions, email me at mail@leisurepoolservice.com

Oct 28, 2009 | Pentair Pool & Spa

1 Answer

How do I get to the pump seal on my hi-flo water


The impeller threads off the shaft and most likely is right hand threads. You will have to lock or hold the motor to remove the impeller. If you remove the motor cover you might find that the motor has a slot in the end of the shaft or two flat sides so you can hold it with a flat wrench.

The impeller is probably plastic and could break. Get a strap wrench to remove the impellor.

Sep 20, 2009 | Waterway 1.5hp Hi Flo Above Ground Pool...

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