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Help Tuning a Ofna Hyper .21 4 Port.

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Old 05-01-2003, 12:03 AM
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WarriorRacer05
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Default Help Tuning a Ofna Hyper .21 4 Port.

Can someone here help me to get my engine tuned correctly? I haven't used it for about a 1/2-1 year and I'm having a hard time with it. The manual for the motor is absolutly useless. Please what are the factory settings for normal use. Also how can I keep it from stalling.
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Old 05-01-2003, 01:57 AM
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noahb
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Default ofna

Hey, I remember that the settings are pretty much flush both on the high needle and the low end. The low end may be in some, but not much. Make sure you are getting fuel to carb, and it would not hurt to clean carb out. If fuel has sit in carb for some time, it can gel up and cause problems. Hope this helps.
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Old 05-01-2003, 05:54 AM
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Default Help Tuning a Ofna Hyper .21 4 Port.

Try Flush to a turn in on the low side

And 2 turns out on the high side. That should get it n the ballpark
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Old 05-01-2003, 07:23 AM
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Default Help Tuning a Ofna Hyper .21 4 Port.

I have one. I'm pretty sure the high speed needle (factory setting) should be all the way in, then unscrew 3 1/2 turns, the idle should be showing 1mm appature in the carb (take off the air filter to check) and the brass screw at the side (cant remember the name) should be flush. As for the low speed needle I cant quite remember but I'll check when I get home tonight. This will be a very rich setting, but will allow you to start it pretty easily. Once your going, you should be able to turn the high speed needle in almost a whole turn.
When you start it, cover the exhaust and pull the cord until fuel hits the carb, then keep it covered for another 6 pulls or so.
I've never had any probs starting mine this way. Hope this helps.
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Old 05-02-2003, 11:52 PM
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Default Help Tuning a Ofna Hyper .21 4 Port.

Okay guys I think I have a problem with my carb not sealing up. It seems that when I go to start it that I can hear a "swoosh" type of sound like air is leaking. What can I use around the bottom of the carb to seal it up correctly?
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Old 05-03-2003, 12:04 AM
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Default Help Tuning a Ofna Hyper .21 4 Port.

is the four port the one with the black head?
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