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Is there some trick to getting the bronze self propelled gear off the shaft?



Gary

Trigger, Send a pic. Maybe that will help.

Some "F" engines used a gear, some used a pulley for a belt. Generally there is a set-screw (for pulley), but also generally the crankshaft below the mowing deck is too gunked up to allow the pulley to slide off. I take the engine and use a wire-brush wheel on my grinder to polish up the shaft and then it slides off quite nicely.

Here is a picture of the gear I need to remove.

Well I guess I'll Grind it off ......... ??

Trigger, Thanks for the pic, but I cannot really see the gear so cannot comment. Closer pic?

Hair-trigger said:

Well I guess I'll Grind it off ......... ??

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I imagine that if you download the appropriate section of the LAWN-BOY SERVICE MANUAL 1950-88 (FORM 492-4608, INTERNET REVISION) it will tell you what you need to know.

I was wondering if you had any measurements of the port heights or widths and timing of the F series lawn boy engine? or if you could take any while it's apart

mattology said:

I was wondering if you had any measurements of the port heights or widths and timing of the F series lawn boy engine? or if you could take any while it's apart

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Isn't the timing fixed due to where the key is positioned at the factory by machining the slot on the flywheel?

I meant the timing of the exhaust port and transfer ports. The ignition timing is what you're talking about and is generally non adjustable

The PTO shaft should slide easily out of the gear. If stuck it may be burred or stuck from old oil or dirt build up. You may have to wrap a piece of leather around the splines and then use a mini vise grip pliers using the leather to protect the splines and pull or pry carefully the shaft from the gear. Being careful not to harm the thin housing.

i need a way to take off this one annoying bolt at the bottom of the mower do i need to take of the blade mounting plate and fo so how do i without damage