IH 300 point gap

http://www.tractordata.com/farm-tractors/tractor-brands/ih/ih-tractors.html list of model numbers and years fo ih .

You have air in the system, bleed the air out.

Official Case IH Online Parts Store and Case IH Catalog for Best Parts...

This will get you to the online manual with tabs to choose from, when you pick it shows blown up schematics.

need to know what model this tractor is or go to www.tractorpart/farmall_trator_serial_number.html it will list them all out hope that helps

The ignition point gap is 0.015" and the spark plug gap is 0.025". More specs here:
http://www.tractordata.com/farm-tractors/000/2/2/223-ford-8n-engine.html

Here's how to do it:

http://www.ehow.com/how_7368031_set-points-ford-8n.html

set the point gap a .025

plug=.030
coil=.010-.012
points=.020

Set the gap on the high spot on the lob,it should be set at around 50000 or twice the plug gap,this is just a rule of thumb,but changing the timing by turning the distributer will get the engine to max performance after this has been done.

Verify the point gap is set right and that you are getting a good spark. Check to see if you are getting fuel to the carb.

John