[Dennis]

The bulk of the cooling water goes on into the rest of the water cover and back out into the block. Here it travels around the sides of the cylinder then out the top and into the water passage of the head. From there it goes to the thermostat, out into the thermostat cover then back out into the head and then back into the lower block, out into the midsection cavity then out thru the relief holes in the lower unit and/or out thru the prop. When in the water on a boat it then goes out thru the holes in the sides of the lower unit.

[Johnpatter]

(4) Is the thermostat frozen shut not allowing any water passage out of the motor? Here you will have the tell tale hole functioning, but the motor can overheat.

[Legion]

(1) First, thing you should do if no water is coming out, is to poke a wire or weed eater cord up in the overboard indicator (tell tale) to dislodge any debris there. I have seen small bugs build nests in there.

[nanaimogold]

Outboard motor impellers/water pumps can fail if air is introduced. This can happen if the motor is not deep enough in the water, or the exhaust tube gasket is leaking, and the upper water pump seal is also leaking, allowing exhaust gasses to be forced into the impeller area. They make good water pumps, not so good air/water pumps

[The Eternal Coin]

1974 � 2006 (Water Circulation & Associated Problems)

[DerrickEaton]

So, if you just replaced the impeller and you still get minimal water flow, into or out of the motor, maybe you should also replace that top water pump drive shaft seal, which I will bet 98% of the water pump repairs don't even consider this. [links]

[sswedcc]

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[seoservicesus]

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[hugolp]

If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.

[Vasili Sviridov]

If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. more

[humble]

Cloudflare Ray ID: 68767aaa4f1a15ee • Your IP : 46.32.66.208 • Performance & security by Cloudflare

[providers36]

here

[SiBorg]

Hello, Richard. Yes, that is the correct kit for your engine.

[Albert Novel]

Original water pump kit would not fit this outboard, (my mistake). Had to install old impeller, by reversing the impeller blade rotational curve (temporary fix). New order has the new impeller installed.

[scottmacheda]

i am looking for a water pump kit for a 4R74R Johnson 4hp. is this the correct part?

[curtcrispin1]

Hello, yes, this water pump repair kit will fit your engine. more

[Bartke]

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[mgoodn2244]

If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.

[em3rgentOrdr]

Another way to prevent getting this page in the future is to use Privacy Pass. You may need to download version 2.0 now from the Chrome Web Store. [links]