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Carburetors, Mixers, Fuel Pumps and fuel delivery Discussion about misc. carbs, mixers, fuel pumps, injectors.

Carburetors, Mixers, Fuel Pumps and fuel delivery

Ottawa mixer


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  #1  
Old 10-01-2019, 08:02:00 PM
terrycheryl terrycheryl is offline
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Default Ottawa mixer

New to the engines. I have aquirred an Ottawa engine with the mixer but I am not sure of the order to starting it. I can get it to fire, but not sure where to go from there. Is there a choke? There is 2 adjustments....one on each side??? Any help would be appreciated.
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  #2  
Old 10-01-2019, 09:23:10 PM
AKMark AKMark is offline
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Default Re: Ottawa mixer

The hole in the top is for starting on gas, the engine was designed to run on kerosene. There should be a needle valve on either side of the mixer (carburetor) open the one on the side with the hole about a quarter turn and close the other one. Fill the hole with gas As long as the pickup tube isn't clogged it should run. There is no choke. I always run them on gas not kerosene so fill the main tank, if it started close the open valve and open the other. Sometimes the check valve in the fuel line is stuck so you may need to clean it. You can also squirt gas in the front and start it that way.
Mark
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Old 10-02-2019, 10:02:10 PM
terrycheryl terrycheryl is offline
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Default Re: Ottawa mixer

Thanks Mark for your help. Makes things a lot clearer now. May need to get a check valve for the fuel line and then will give it a try. If I only run it on gas, do I still need to start it on the other tank? Thanks again for your help!
Terry
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Old 10-03-2019, 11:01:23 AM
AKMark AKMark is offline
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Default Re: Ottawa mixer

Terry, no I just squirt some gas in the front of the mixer. The check valve is connected to the mixer at the end of the fuel line. Just clean it up if the ball is to pitted you can get one at ace hardware. Is your engine a log saw like this one?
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Old 10-03-2019, 08:48:56 PM
terrycheryl terrycheryl is offline
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Default Re: Ottawa mixer

Thanks for the info. I am attaching a couple of pictures don't think it is a log saw. On that note, I did notice the belt pulley has been welded. after reading some of the forums, do you think that would be an issue. The flywheel is good. I'm also attaching a picture of the inlet valve that goes into the mixer. The one I have doesn't seem to have a check valve....so should I add one to the fuel line? Thanks again for the help.
Terry
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Old 10-03-2019, 09:57:34 PM
AKMark AKMark is offline
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Default Re: Ottawa mixer

Yes you need a check valve, and yes its a log saw engine someone added the flat belt pulley. You need an inline check valve try starbolt they are a sponsor on smokstak. I will get you a close up picture of the one on mine in the morning.
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Old 10-04-2019, 10:20:48 AM
Doug Tallman Doug Tallman is offline
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Default Re: Ottawa mixer

That pulley is the original pulley for the buzz saw attachment that mounted on the 2 ears at the back. Notice it is mounted to the log saw clutch. You unbolt the pulley and put the saw attachment back on for a log saw.

The check valve should be at the opposite end of the line from the mixer. Show us a picture where the line hooks in the tank.
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  #8  
Old 10-04-2019, 11:38:38 AM
AKMark AKMark is offline
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Default Re: Ottawa mixer

Thanks Doug I wasn't sure on that pulley, the buzz saw I had ran off v belts. Here's the picture of the check valve.
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Old 10-04-2019, 06:08:24 PM
terrycheryl terrycheryl is offline
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Default Re: Ottawa mixer

Thanks for all the help. Right now there is only a hole in the tank where the line should go into, so guessing thats where the check valve should go. All of that was already apart or disassembled when I bought the motor. At least now I know where to start with a few of the issues. After I get a check valve put in, I'll probably need some more help. Also, I was told when I bought this it was a hit and miss engine, but by looking at the way the valves work, I'm assuming it hits every time.
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Old 10-04-2019, 06:36:29 PM
terrycheryl terrycheryl is offline
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Default Re: Ottawa mixer

Mark,
After studying your pictures closer, I just realized mine has a little different set-up than yours. My throttle rod would be in the way of the fuel tank to set up like yours so my tank will be further away. Will I need to go with all copper fuel line or is rubber ok? I have attached a picture of mine. Thanks again,
Terry
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Old 10-04-2019, 08:02:50 PM
AKMark AKMark is offline
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Default Re: Ottawa mixer

You are correct its a throttle governed engine, not hit & miss. The original fuel tank was under the engine and had a pipe inside the tank that ran to the back of the tank. That way when the rails of the saw were on the log the angle would not keep the engine from getting fuel. Google Ottawa drag saw and you can see some video of them working. You can use the rubber fuel line, shouldn't really matter.
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