Tank mounted Pulsa-jet carburetor - Snowblower Forum : Snow Blower Forums
 
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post #1 of 6 Old 02-20-2015, 12:25 PM Thread Starter
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Tank mounted Pulsa-jet carburetor

This 4 hp B&S pulsa-jet carburetor is mounted directly to tank with three screws. You remove the carb/tank from engine as one unit, then separate.
There are two pipes with fuel line filters which extend down from carburetor into the tank, which is actually two tanks - a small one inside of the main tank.
Using first acetone to remove the old gas gunk and then Lysol TB cleaner to remove rest, which seemed to be a brown coating of rust. I got both tanks to clean metal as of yesterday.
When I looked in there today, fine rust was starting to form. I know they sell coatings for lining the inside of tanks but I do not want to go that route especially with this two tanks setup. I'm not planning on using the machine until next winter as I am want to fix and paint it.
Would appreciate suggestions to prevent rust
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post #2 of 6 Old 02-20-2015, 12:44 PM
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"I know they sell coatings for lining the inside of tanks but I do not want to go that route"
Keep it full of non oxygenated fuel with some stabilizer.

BUT, if I was hanging on to an older machine that I knew had some rust I'd coat the inside of the tank.

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post #3 of 6 Old 02-20-2015, 01:02 PM
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So the machine is being stored, not used? As in, the tank is empty?

If so, put a mixture of 1/3 motor oil and 2/3 solvent like kerosene or mineral spirits in there and slosh it around to make sure every inside surface is coated. Then drain out the excess mixture.

The solvent will evaporate leaving an oil coating on all the surfaces.
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post #4 of 6 Old 02-20-2015, 01:13 PM
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Take a bunch of steel nuts and drop them in the tank. Tape up all the openings. Wrap a towel around the tank and tape it closed. If you're married, wait til wifey leaves the house for a while and throw the "package" in the clothes dryer for about 20 minutes. Unwrap and rinse with warm soapy water and then clen water until clean. If you have compressed air. Blow as much water out as you can, then dry inverted in a warm place. Good to go. MH

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post #5 of 6 Old 02-20-2015, 01:43 PM
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Quote:
Originally Posted by motorhead64 View Post
Take a bunch of steel nuts and drop them in the tank. Tape up all the openings. Wrap a towel around the tank and tape it closed. If you're married, wait til wifey leaves the house for a while and throw the "package" in the clothes dryer for about 20 minutes. Unwrap and rinse with warm soapy water and then clen water until clean. If you have compressed air. Blow as much water out as you can, then dry inverted in a warm place. Good to go. MH
Good advice on the dryer and wife not being around. I've done something similar with steel shot BB's but shook the tank, and hadn't thought of the dryer.

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post #6 of 6 Old 02-20-2015, 06:15 PM Thread Starter
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Thanks so much.-all good posts - I think I'll go with the solvent-- motor oil mix, this should allow me to get the machine (Bobcat) fixed up - running properly and painted so it won't rust at least in the short term and I can see what its like.
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