How do you time the magneto on an Oliver hg Crawler with the 4 cyl Hercules engine. ? I ve been trying to start one that has spark and fuel and it will not hit at All! Makes me thing the timing has been fiddled with. Im gonna put new plugs in tomorrow and need to get it running bY then. I would try pulling it off but it spins over plenty fast enough with a 12 volt battery. When I was moving the throttle lever. It finally hit and died when the throttle lever was all the way back to the rear. I did pour about 1 gallon of fresh gas in it and it had about a quart of 2 year old gas in it. It is restored and has been in enclosed garage sitting for 3 years
- Thread starter RTR
- Start date
Ok. I m used to Farmall cubs. So on this one, rotate mag all the way towards the motor , get #1 cyl on TDC and then find mark on flywheel or front pulley? , then rotate mag until it clicks then tighten down ?
Is that how it s done on this machine? I ve got to get her running for this auction and just got the starter back from the shop so I didn t know I would have to do all this until today. Sale is Saturday.
Ok. Just confirming the summary here.....
(1) remove magneto and check for position of governor gear
(2) put engine on TDC
(3) while looking at cogs on magneto, rotate counterclockwise until the white mark appears in sight glass.
(4) Reinstall magneto making sure cogs line up with governor gear
Is that correct? Is there no fine tuning?
greg krush
Member
I would flush out all the old fuel and make sure that there is good fresh fuel in the carb, old fuel will not fire, give it a shot of
ether or squirt fresh clean gas into the throttle body, if it fired once with throttle all the way back that would indicate lack of fuel
to me.
ether or squirt fresh clean gas into the throttle body, if it fired once with throttle all the way back that would indicate lack of fuel
to me.
Kind of hard to put the mag on so wrong it won't run. Just find out which terminal on the mag has good spark when the engine is at TDC for
#1 on the compression stroke. You might have to stick the plug wires back in different holes in the mag. Other then that, it does not
matter. I have put the mag on "wrong" on my HG many times. It still starts and runs fine which I do what I described. My mag does dead
nearly ever year after it sits all winter. So I have to pull it off to file the points to make it run. My HG with the IXB3 is especially hard
to get to because it has a Hercules replacement exhaust manifold that robs a lot of room around the mag.
#1 on the compression stroke. You might have to stick the plug wires back in different holes in the mag. Other then that, it does not
matter. I have put the mag on "wrong" on my HG many times. It still starts and runs fine which I do what I described. My mag does dead
nearly ever year after it sits all winter. So I have to pull it off to file the points to make it run. My HG with the IXB3 is especially hard
to get to because it has a Hercules replacement exhaust manifold that robs a lot of room around the mag.
Here is the odd-ball exhaust manifold on my HG. It sits so low there is no room for the carburetor. Hercules provided an adapter to move the carb out of the way. Works fine but makes getting to the magneto even harder. Regardless, that magneto will work no matter how you bolt it on. You just might have to switch some wires around.
I have two mags for my HG. Fairbanks Morse and a Wico. Either works fine and like I said - you can make it run however you bolt on the mag.
The HGs never came with the Fairbanks mags but the FM-J4B from an Allis Chalmers works on the IXB3 Hercules engine fine. Or for a new Wico,
a XH1113.
The HGs never came with the Fairbanks mags but the FM-J4B from an Allis Chalmers works on the IXB3 Hercules engine fine. Or for a new Wico,
a XH1113.
oliver90owner
Member
- Location
- UK
Question: Is the mag set up for the correct rotation? Many mags will operate in both clockwise and anti-clockwise rotation, but need different
internal settings for each direction of rotation. Only come across it once when a mag was swapped for another - they changed the inertial trip but
failed to change the points cam (but as I hazily recall, there may have been no spark due to the current generation being at the wrong time).
internal settings for each direction of rotation. Only come across it once when a mag was swapped for another - they changed the inertial trip but
failed to change the points cam (but as I hazily recall, there may have been no spark due to the current generation being at the wrong time).
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