STARTING 41 JB-B

The absolute best way I have found to hand start any �B� is to have someone else do it.

All kidding aside, there is probably no best way. It seems they all start a little differently & some take more choke than others.. Some like no throttle to start & others like just a little.. I have some pretty close to identical tractors & even they start differently.. I guess what I�m saying is to try different things until you find something that works for YOUR �B��

On a �B� I am not familiar with I would probably try full choke & setting the throttle so the carb�s top lever is just slightly off the idle stop pin (maybe 1/8� or so),, then going to full choke for a revolution or two,, then opening the choke to about � for a revolution or two,, then opening the choke to full open for a revolution or two.. Then if still no start opening the throttle to full open & cranking.

If by chance your �B� has petcocks,, choke until fuel comes out the pet-cocks then open the choke to about � open..

If it hasn�t started after a about 6 or 7 revolutions then there is probably something wrong.. Either with the way you are shutting the engine off, or a mechanical problem like weak ignition or leaking carb choke. Or poor engine compression..

Shutting the engine down by choking it makes starting much harder (probably best to stall it in gear or shut the fuel off & allowing the carb to run dry)

Once shut down try opening the carb�s lower drain cock & leaving it open so any fuel that gets through the shut-off valve will drain out & not over fill the carb.. That also allows you to see if your fuel system shuts off properly. (put a coffee can or bucket under the open carb so you don�t have a problem with a fire)

You didn�t say if you are having starting difficulties but if you are asking here it sounds like you might have..

If your �B� is starting hard you might make sure the choke plate is closing all the way & not bent,, Maybe take an old spark plug & open the plug electrode gap to 3/16� then install in one plug wire at a time & lay on the block (leave the original plugs in for cranking drag),, then crank the flywheel & see if you are getting a bluish colored spark,, if not or it is yellow suspect a weak spark from the mag..

Sometimes it helps to open the carb�s idle needle a little for easier starting so you might try that (turn it back once started)

You might try new spark plugs with a slightly wider .040� gap as that can also help starting..

One last thing�older gasoline really hampers easy starting so make sure you have fresh gasoline in it..

Clooney

Now, many don't open the throttle plate up to start their tractors. It seems that the choke on these carbs can make the mixture too rich too soon. By opening the throttle all the way up you get a little less fuel in the cylinder. With my tennis elbow, I'd rather be cranking while the mixture gets richer than to go too far and crank to make the mixture leaner.

One other thing on technique - putting your hands together and yanking on the flywheel is a recipe for back trouble. When you feel pressure building for a compression stroke, grasp the flywheel at the 11 o'clock and 5 o'clock positions then roll through steadily. BTW, this also works for the 500+ cid model D.

Personally I do the following, open petcocks, advance throttle approx 1/3, give full choke for 1 turn and then when you start to come up on compression, open choke and then continue to roll the flywheel and she should fire.

If not continue the same sequence but go easy on the choking or you will flood the carb. When she does fire you may have to feather the choke a little until she warms up. This is what works for me however Im sure you will get some alternate sugestions based on others experience

Happy cranking

1) Shut them down by turning off the gas and let em run out of fuel which empties all the gas, then set the throttle open.

2) To restart, Turn the gas ON,,,,, give her a lil throttle (usually between just above idle to 1/2 or so, DEPENDS ON TRACTOR),,,,, ,,set the choke from 7/8 to full choke (depends on tractor) and crank her over a couple compression pulls or until she starts to show a lil vapor (NOT raw gas which can flood) out the petcocks if she has any,,,,, ,,,open the choke to between near open to 1/2 or so (depends on tractor),,,,, ,,she ought to start the next pull or two!!!!! !!!!! !

I feel this is one of those questions that has many varied methods n opinions, all as good as another, as it DEPENDS ON THE TRACTOR and theres no perfect way or perfect answer one size fits all lol. However, there are some fairly true and accurate things in general, such as, DONT OVERCHOKE N FLOOD (wet foul) the plugs,,,,, ,shut her off by turning the gas off and settign the throttle open,,,,, ,,have fresh clean water free gas and a clean air cleaner bowl,,,,, ,,,have good points n plugs (Replace if burned or pitted or carboned up or fouled),,,,, ,,,have good wire core wires,,,,, , THEN PLAY WITH AND EXPERIMENT AS TO HOW MUCH CHOKING AND THROTTLE POSITIONS AND SPARK TIMING AND CARB ADJUSTMENTS to best start the individual tractor.

Thats what works for me, it will be fun to hear the methods n opinions of the gang as to what works for them, Im afraid theres no perfedct answer here cuz each tractor behaves a lil different, dependant upon many different parameters.

God Bless yall

John T

Tim