5HP impellar rotate

[Fishon1]

I have replaced the water impellar on my 5hp 1965 Johnson and am questioning myself after I put it back in. The rubber fins are curved when you put it in the pump/case. Which way should the fins point. Should they go against or with the direction that the impellar spins.<br /><br />I also noticed that there was no gasgets in the impellar area. Only ones were at the top of the drive shaft by the power head. Is this correct?<br /><br />I am leraning as I go on this and the service manual does a very poor job on explaining this and the pictures are so poor the are not worth much. I guess that when you buy a manual that covers such a broad range of years and motor sizes you can not expect much more.<br /><br />Thanks

 

[OBJ]

Re: 5HP impellar rotate

The tips of the impeller fins will point away from the direction of rotation. Your right, no gaskets around the pump.<br /><br />If you want a reprint of the original service manual, do a serch for Ken Cook Co. or Marine.com. Both can get you an OEM service manual and parts manual.<br /><br />Keep workin' at it, it'll get easier as you go.

 

[Fishon1]

Re: 5HP impellar rotate

Thanks for the help.

 

[Fishon1]

Re: 5HP impellar rotate

I do have one more question just to make sure that I get this in correctly. When I am standing at the back of motor looking at the prop.<br /><br />Does the prop rotate clockwise?

 

[SpinnerBait_Nut]

Re: 5HP impellar rotate

Originally posted by Fishon1:<br /> I do have one more question just to make sure that I get this in correctly. When I am standing at the back of motor looking at the prop.<br /><br />Does the prop rotate clockwise?

When in forward gear it will, in reverse, it will spin counter-clockwise.

 

[Joey One]

Re: 5HP impellar rotate

Looking down on the driveshaft, it turns clockwise.<br />After installing the impeller, including the pin or little three sided plastic key; put some outboard oil inside the pump housing and on the impeller. Install the pump housing by rotating the housing counterclockwise, and the impeller vanes will be bent properly (counterclockwise).

 

[chris in va]

Re: 5HP impellar rotate

One more thing, the impeller blades will automatically orient themselves once you get it running, even if you put it in facing the wrong way.

 

[Paul Moir]

Re: 5HP impellar rotate

Generally speaking that's true. I used to use grease on my impellers and once I wound one in backwards. The grease kept it lubricated well enough for it to not flip & not work. I'm sure if I reved the engine it would have flipped, but I didn't and tore down the w/p instead. Now I use soap to lube the impeller.<br />Got the idea here.