To start with (no pun intended) if it has a Magneto ignition and it pull starts very easy but is difficult to hand start, my first suspect is a problem with the mags start impulse spring wind n trip assembly and/or a weak spark. Start/impulse timing can be CRITICAL, she needs to snap n fire right at TDC maybe a degreee or two before (but not too fast cuz she can kick back) but if she fires too late it CAN BE HARDER TO START
DOES IT (Mag) PRODUCE A LOUD SHARP "SNAP" WHEN YOU HAND CRANK IT VERSUS A FAINT DULL CLUNK OR NO SNAP AT ALL???? If so theres either a weak or broken spring or some other impulse assembly problem.
See first if shes indeed SNAPPING LOUD and if so check the spark and you need a good visible blue versus any faint thin wimpy yellow spark. If no snap check the impulse mechanism.
Just to be sure Id install a fresh set of spark plugs (once fouled they may not be real good) ,,,,,,,,check the points for proper gap and clean/buff polish and/or file and gap them n then check the spark quality
BOTTOM LINE you need a loud sharp snap from the mag and a good hot blue spark for good hand starts.
DO NOT OVERCHOKE n wet gas foul the plugs!!!! You only need choke till you get a gas vapor (NOT raw gas, flooded) out the petcocks then unchoke it. Id set the throttle at a slow idle when cranking,,,,,,open petcocks,,,,,,choke sparingly (lookin for gas vapor),,,,,,,insure fresh set of plugs n a good loud sharp mag SNAP and a good hot blue spark,,,,,,try different amounts of choke
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Today's Featured Article - Talk of the Town: Winterizin Engines - To Drain or Not to Drain? - by Staff. Another great discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "Winter is fast approaching..for a gas tractor should the gas tank be drained and run the engine til the carb is dry or do the gas stabilizer products I've heard of work? (tractor will not be used til spring) any other tips for winterizing?? "
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