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oil pump gt750
Posted: Sun Mar 28, 2010 4:06 pm
by two-stroke-brit
i am rebuilding my buffalo motor and whats the best way to prime the oil lines from the oil pump to the cylinders before start up.
if i crank it over without the plugs in, would that pump it thro.
or is that a bad idea.
thanks mark.
Posted: Sun Mar 28, 2010 8:28 pm
by tz375
What i do is:
Pinch off the oil supply line to teh pump.
Remove the pump (3 screws) and lift it aside
use an oil can fill of oil which is a different color to the CCI in the tank and manually force that through all lines.
Refit the pump
Remove the pinch from the feed line.
Fire it up
Watch to see the color in the lines change.
Done
Posted: Sun Mar 28, 2010 9:48 pm
by H2RICK
Mark, if you are adept, you can buy a new pump-type oiler with a flexible spout at your local hardware store and use it to prime your oil lines.
Remove the Buffalo injection pump but leave the injection line manifold and all engine oil lines in place and connected. Check the nozzle on the spout of your new oiler closely to insure that it will fit nicely into the oil manifold holes with the little black orings in place without damaging the orings.
If all is good in regard to the nozzle to oring and manifold hole fitment, then fill the oiler with injection oil and start filling the lines. You will be able to see the oil move along the lines as you pump the oiler. It doesn't take very much oil to fill each line. Re-install the pump as per normal and bleed the pump itself as per instructions in the service manual.
TZ's idea of using a different coloured injection oil for the initial filling of the lines with your new oiler is a good way to make sure your pump is actually working properly.
Don't forget to hold the pump lever wide open on your first startup to make sure everything is getting a good dose of oil.
If you are still not comfortable with all this, your last "backstop" is to have your first fuel in the gas tank a 5% (20 to 1) mix of petrol and injector oil.
This will at least keep the top end oiled properly. You may want to hook up a temporary tank with the 20:1 mix in it so that you won't have too rich a mixture in the actual fuel tank when you get everything sorted out.
Posted: Mon Mar 29, 2010 5:57 pm
by rngdng
I've always used a syringe sans needle.
Lane
Posted: Mon Mar 29, 2010 7:31 pm
by two-stroke-brit
many thanks guys.
mark