Posted by Turnaround on October 02, 2013 at 08:42:58 from (71.49.40.98):
In Reply to: Need help on 740 posted by J C Newton on October 02, 2013 at 08:09:17:
As always, check the electrics before chasing the fuel. If you have a hand held ammeter, put it in line with the distributor or coil and see if the points are carrying at least two amps. If you have an ohmmeter, compare your coil with a known good coil (some Chinese replacements have insufficient copper wire inside to run properly). Pull the spark plugs and spin the engine with your thumb in each spark plug hole to check compression, and then clean/replace the plugs as needed. Spin the engine with the spark plug wires hooked to the plugs (and out of the engine but still grounded). There should be a pretty hot spark across the plug's gaps. Pull the air cleaner off. Pull the gas line (past the fuel filter), turn the fuel on, and see if you have a respectable flow out of the gas line into a catch can. If still running poorly, pull the carb apart, and run a small soft wire through all the fuel passages, then flush with carburetor cleaner, then adjust the float level, while insuring that the needle and seat moves easily. Then, dump all the fuel out of the fuel tank and run some fresh fuel through the fuel line and into the catch can. Reassembled, the tractor should run OK.
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