1996 300 4x4 2-stroke in a box, I have plenty of questions. - Polaris ATV Forum
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post #1 of 10 (permalink) Old 11-26-2011, 08:38 PM Thread Starter
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1996 300 4x4 2-stroke in a box, I have plenty of questions.

I was given a 1996 300 2 stroke , someone had disassembled, there are two hose barbs sticking out of the carb, that I have no idea where they are supposed to be connected to, one is on the bottom of the carb, the other is on the left side of the carb in the center of the flow-path, both are small hose fittings. Also have plenty of compression, and spark, but I can't get it to fire up. What spark plug should I have, and what should the gap be set at? I guess that the timing cannot be moved (right?) magnet fixed in the flywheel? I have also elected to mix my fuel, and bypass the oil injection. Any help would be appreciated. Thanks , David Joe
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post #2 of 10 (permalink) Old 11-26-2011, 09:21 PM
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One is a vent tube and the other is an overflow. Check your crank seals. If one is blown out/leaking it wont run. Oh and do a search here for a manual.
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post #3 of 10 (permalink) Old 11-27-2011, 04:59 AM
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Welcome to the board!

I tried setting my password to "penis" but it said my password wasn't long enough...
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post #4 of 10 (permalink) Old 11-27-2011, 05:08 AM Thread Starter
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There is a line coming from the oil (injection) pump, that looks like it should hook up to one of the ports on the carb. I have a manual, just needs to be picked up, will do that Monday. Also, looking at the pic of your bike, might be a big help with the plastic and racks, when I go back together.
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post #5 of 10 (permalink) Old 11-27-2011, 05:09 AM Thread Starter
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Welcome to the board!
Thanks Bruce.
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post #6 of 10 (permalink) Old 11-27-2011, 05:13 AM Thread Starter
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One is a vent tube and the other is an overflow. Check your crank seals. If one is blown out/leaking it wont run. Oh and do a search here for a manual.
I am guessing that blown crank seals would be a vacuum leak? Not terribly familiar with two-stroke in practice, somewhat familiar in theory.
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post #7 of 10 (permalink) Old 11-27-2011, 08:52 PM
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There is a line coming from the oil (injection) pump, that looks like it should hook up to one of the ports on the carb. I have a manual, just needs to be picked up, will do that Monday. Also, looking at the pic of your bike, might be a big help with the plastic and racks, when I go back together.
It actually connects to the reed cage boot on the engine side of the carb.

1997 Sportsman 400 4x4
1985 Honda 250ES BIG RED
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post #8 of 10 (permalink) Old 11-27-2011, 08:55 PM
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One is a vent tube and the other is an overflow. Check your crank seals. If one is blown out/leaking it wont run. Oh and do a search here for a manual.
I am guessing that blown crank seals would be a vacuum leak? Not terribly familiar with two-stroke in practice, somewhat familiar in theory.
You are correct. I bought mine real cheap from a guy who said it had an electrical problem. After LOTS of troubleshooting it turned out the clutch side crank seal was blown sideways, not allowing it to run.

1997 Sportsman 400 4x4
1985 Honda 250ES BIG RED

Last edited by hsdtech; 11-27-2011 at 09:12 PM.
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post #9 of 10 (permalink) Old 11-27-2011, 09:08 PM
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I was given a 1996 300 2 stroke , someone had disassembled, there are two hose barbs sticking out of the carb, that I have no idea where they are supposed to be connected to, one is on the bottom of the carb, the other is on the left side of the carb in the center of the flow-path, both are small hose fittings.
Dave, after reading this again I think I may have told you wrong. I think one of those barbs is the fuel INLET from the gas tank. Is it vertical, pointing straight up? If it is then it should be the fuel inlet.

1997 Sportsman 400 4x4
1985 Honda 250ES BIG RED
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post #10 of 10 (permalink) Old 11-29-2011, 08:03 AM Thread Starter
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No, H, you told me correct, the two fittings I'm speaking of are about the size of fuel lines on a 2-stroke weed-eater. I found the fuel inlet.Thanks man.
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