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Old 11-02-2003 | 07:36 AM
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majortom-RCU
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From: Merrimack, NH
Default RE: YS four stroke fueling methods?

Dennis, a photo is truly worth a thousand words. I'm looking at your tee/dot installation, and find two things to comment on.

The first is that on your pressure line, coming off the left nipple, your tee appears to be inserted between the nipple and the check valve. You need to move the tee to the tank side of the check valve, so when you fill your tank the vent line will be open to the atmosphere rather than being blocked by the closed side of the check valve; also when you finish your flight, open the dot on the pressure line to relieve the pressure in the tank. If you don't, when you open the fuel line dot, you'll get a strong squirt of fuel coming at you under pressure.

Second, I don't see a fuel filter on your fuel line, connecting to the right nipple. Maybe there is a filter installed behind the firewall, but if so that filter is also on the wrong side of the tee. If you don't have a filter at all, you will have trouble for sure, probably sooner rather than later. The connections should be from right nipple a piece of tubing to the filter, then from filter to tee, then from tee one line to fuel dot and other to tank clunk line. (Right & left looking from behind the engine.)

Finally, there's nothing wrong with side-mounting your YS, except that it will improve your lateral balance to mount it inverted. With the integral pump, the YS fuels up, starts and runs inverted with no problems that I've ever encountered. Disadvantages though are it's sometimes a pain getting the glow igniter onto and off of the plug (unless you install remote glow connector); and if you nose over on occasion the air intake is exposed to dirt or debris being kicked up. YS or somebody ought to come up with an air filter to cover the intake.

Just wanna be helpful.