Posted by The tractor vet on April 17, 2012 at 17:02:13 from (75.19.127.43):
In Reply to: 263 Gas Motor Missing posted by BigBob706 on April 17, 2012 at 11:54:08:
Have you had a timing lite on it yet ??? timing is set to full advance at wide open throttle and IF and again i said IF it is a 263 then it is set at 23 degrees BTDC . NOW IF by chance someone upgraded it sometime in the past to a 291 then the timing gets set at 18 degrees BTDC. . The best spark plugs to run in them are either a 386 autolite or a C86 A/C i have had less problems from them. Pull the valve cover and run the valves they set at .027 , No here pay close attention to the rocker arm as there will be a wear pattern and you do not want to get the feeler gauge on the high spot as you will NOT get a good valve set. as long as the engine is warm (anything over 70 degrees the .027 will be fine. Now as far as carb adjustment there should be NONE for load as there Should be a solenoid on that carb for shutdown only . Now some of the vary first one did have a screw on the back side and that SHOULD be five full turns off the seat with the key in the OFF . and the use of 93 octane gas is a must on these engines. Now some on here will say that you don't need to buy the high test But they are not the ones that have ever worked a 460-560 504 -856 -766 706 . TRUST ME they will seize a piston or pistons so fast you will not know it happened till it is to late and the damage is done . We still work ours in the fields. Myself i have had 706 gassers since 1982 of my own and not counting the ones that i bought and sold since 1985 .
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