RPM 2200

I couldn't get my 8N to idle at 400 RPM nor rev up to 2200 RPM. Found my only problem was with the tach. It wasn't accurated at the low and high ranges. Don't think the tach is your problem, but should not be overlooked. Solved my problem with an aftermarket tach and am well pleased with it. Good luck.

Shut the tractor off. Move the hand throttle to full, then quickly move it to fully closed. The carb throttle plate should be on the idle speed stop screw. There should be no tension and no slack in the governor spring. Bend the hook on the end of the spring to adjust the static length of the spring.

Advance the hand control to half throttle. Watch the governor as you do this. The lever at the top of the spring should start to move almost immediately. If there is a lot of slack before anything happens down at the governor, the problem is in the linkage from the hand control to the governor arm. Check for worn rod ends or sloppy pivot pins. The rod going from the top of the engine down to the governor can be bent to eliminate some of the slack.

If the governor arm starts to move right away, then by the time the hand control is half open, the carb butterfly should be fully open. There should not be tension in the spring at this point. If there is tension, but the carb butterfly is not open, the governor is sticking internally or on the pivot pin. If there is not tension, and the carb butterfly is not fully open, then the rod from the governor to carb is too long, and it can be bent to shorten it.

Once the linkage works such that the carb throttle plate is on the idle stop with the hand control closed, and fully open at half throttle, you have the linkage sorted out. On to the governor.

Return the hand control to idle and start the tractor. Advance the throttle fully. Check RPMs with a tach. The RPMs should reach 2200. If they don't, shut the tractor down, and unscrew the max speed stop screw at the governor by a turn or so, and try again. If this has no effect, try "helping" the throttle plate at the carb open with your hand. If the engine now speeds up, you have sticky flyballs or a worn governor plate. If this does not help, you have a fuel flow problem or some sort of blockage at the air cleaner or tailpipe.

Your mileage may vary

Because you report that you get NO engine advance when you advance the dash throttle lever until 1/3 advance...and...because you claim you can't get more than 1700 rpms with the governor connected, my experience would say "its yer governor" balls innna groove. Time for a rebuild..... ..Dell