firing order on a cub

[charley cpj]

afternoon, am working on a cub that won't start, im not an I-h man so forgive me. the firing order is 1342, ok is that front to back or back to front. thanks in advance

 

[Turkeyfoot]

(quoted from post at 14:37:55 07/27/21) afternoon, am working on a cub that won't start, im not an I-h man so forgive me. the firing order is 1342, ok is that front to back or back to front. thanks in advance

Front cylinder is #1.

 

[khouse6]

clean the points, and check to see if it is firing.

 

[old]

Front to back as in #1 is close to the radiator and #4 back towards where you sit

 

[used red MN]

Was going to accuse you of being one of those green left
or right guys and poke at you how confusing it gets when
you add two more to make 4. But according to your past
post you seem to have a interest in the other shade of
green. Same deal as those green ones as far as cylinder
numbering. Get it running and stick your finger in the fan
and when you jerk back you will probably get shocked by
number one spark plug since it is the closest. Then you will
always remember. Just joshing you a bit, hope you can get
it purring for you soon!

Edit to correct wording

This post was edited by used red MN on 07/27/2021 at 07:41 pm.

 

[used red MN]

Edited to remove all wording, mistakenly replied instead of edited.

This post was edited by used red MN on 07/27/2021 at 07:44 pm.

 

[BarnyardEngineering]

Officially the cylinders are numbered front to back, but at least on a 4-cylinder you can time it with the rear cylinder as #1 and it will run exactly the same. I have come across more than one 4-cylinder IH tractor with the engine timed on the rear cylinder.

Mind, you have to do everything the same, cylinder on compression stroke, reset the distributor so the rotor is pointing at #1 post on the cap. It's not like you can just switch the plug wires around and have it run the same.

 

[thdrduck]

I'll add something that you didn't ask about... if it hasn't ran in a long time, remove the oil filter and use an oil can and squirt oil in the hole that is near the top of the filter housing. This will make sure the oil pump has oil in it and will start pumping on startup. The oil pump is mounted on the back of the engine and can loose prime over time. That happened to a Cub I bought and resulted in an engine tear down that was completely unexpected. Lost my butt on that little tractor because of it.