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Timing on a Briggs and Stratton engine

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rosemary smith
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PostPosted: Thu Mar 28, 2013 1:42 pm    Post subject: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

My friend has a 1976 model 1430 Speedex tractor with a 14hp engine. It has a syncro-balance engine with a rope pull to start it. It won"t spark and he can"t find replacement parts, so he purchased a coil module (dealer advice) - a magnapulse ignition. It still wasn"t sparking, so he tried to strengthen the magnet, and it does show a weak spark now, but the timing is off. Any ideas on how to get the proper timing, or is it something else? He wants to get this tractor up and running again.
 
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Mark-Ia
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PostPosted: Thu Mar 28, 2013 1:48 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

replace the flywheel key..
 
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MNGB
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PostPosted: Thu Mar 28, 2013 4:24 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

Is it a cast iron engine or an aluminum engine? Could be that it needs points and condenser.
GB in MN
 
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rosemary smith
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PostPosted: Thu Mar 28, 2013 5:00 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

It'e cast iron, but the module replaces the points
and condensor. The module is on a bracket and
looks like it can be moved left to right. Also,
the depth gauge can go from about 9 one-thousandth
to 12 one-thousandth. The spark is very faint,
yellow and weak, and the engine kicks back, so he
thinks the timing is too far advanced. We were
hoping for some specs on how to set it. He thinks
the old set up was ok, but the push-pin is worn
and is now obsolete, so now he's trying to make
this new set-up work, as that is what Briggs is
selling to replace the old. This does away with
the points and condensor system.
 
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rosemary smith
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PostPosted: Thu Mar 28, 2013 5:05 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

The flywheel has never moved and the key hasn't been sheared. He's trying to replace the old points and condensor system with this new solid state system sold by Briggs as a replacement.
 
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MNGB
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PostPosted: Thu Mar 28, 2013 5:09 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

Its been my experience that those modules don't work on the old cast iron Briggs, for one thing the cast iron engine's magnets are reverse polarity to the newer engines you can try reversing the + / - leads on the module. Those engine with the external points are very good engines but the points and condemner needs to be in good working order, it could also be the coil that is weak. I'd go back to the points but that's me.
Ok I see you replied as I was posting so please tell me when you say electronic module are you talking about the Nova type points eliminator, or the B&S magnetron electronic system?
GB in MN
 


Last edited by MNGB on Thu Mar 28, 2013 5:12 pm; edited 1 time in total
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El Toro
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PostPosted: Thu Mar 28, 2013 5:50 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

He would have been better off to have used the points and condenser and installed an auto type coil if you have battery start. He would have to disconnect the old coil wire at the points. Then install a switch and run battery voltage to the switch and to the coil and to the points. Hal
 
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MNGB
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PostPosted: Thu Mar 28, 2013 6:43 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

Yep that's what I think Hal, but he says its a rope start engine which I'm not sure of I was thinking most all the cast iron engines had a starter be it starter / generator or geared.
GB in MN
 
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rosemary smith
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PostPosted: Thu Mar 28, 2013 7:26 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

Magnetron. In fact, he picked up 2 parts. One is
from NAPA and was just supposed to be a new coil.
The other is from a hardware/Briggs dealer and is
the module. They both look the same, except one has
a nodule that would bring it closer to the magnet on
the flywheel. Another guy he knows installed one of
these on his old Speedex and seems to have the same
problem. Sometimes it will start, or not, or if he
has it running and shuts it off, it may not start
again. Very frustrating!
 
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JT
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PostPosted: Thu Mar 28, 2013 7:27 pm    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

If it is a cast iron engine, the magnetron ignition will not work unless you reverse the polarity of the flywheel magnets, that is why the fire is weak and out of time, Get a set of points, put old coil back on it set new points at .020, coil gap at .010 and you should be good to go. That ignition system is pretty simple and reliable as it was manufactured.
Jim
 
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joe csuti
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PostPosted: Fri Mar 29, 2013 4:00 am    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

The magnetron conversion doesn't work with all briggs eng,briggs admits that on a small percentage of it's mod# eng it won't work due to flywheel issues(reverse magnet polarity,number of magnets on flywheel or weak magnets)in addition depending on type/code# of eng the 320000 series used point type ign or solid state according to my lookup & lists 2 different pn coils,1 for point type ign & the other solid state,the early solid state system had an ext trigger module mounted on coil,later versions had trigger internal in coil,you must have correct pn flywheel for solid state system to work/work correctly on this style system.

As has been said you're probably better off sticking with point type ign system.The 320000 series eng had adjustable flywheel timing,first thing to do is take orig coil to one/more local mower shops & have coil checked in a coil tester,same may be bad/weak,if coil checks ok then I would suspect problem is dirty/burned point contacts,worn push pin,bad condenser,wire to coil shorting to block,incorrect flywheel/coil air gap or weak flywheel magnets,goto link below & read text,will tell you how to set point/flywheel timing.

The fiber push pin for points is still avail(probably pn 298125)to confirm correct pn for pin goto www.partstree.com & lookup eng mod/type numbers in briggs eng parts listings,after you have correct part# for push pin(plunger)do a goggle search for briggs+pn,same still listed on ebay & online dealers.
briggs

 
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joe csuti
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PostPosted: Fri Mar 29, 2013 4:36 am    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

If you can't get link to work,just keep trying,in the past 3-4 wks my dialup dsl service has slowed to 14k-28k or just stopped working,I don't know if this is being caused by verizon,earthlink or aol,I haven't been able to get a straight answer out of any of them.

Verizon wants me to change over to their fios system & I won't so I don't if the're slowing me down,earthlink has connection issues that they won't admit to as I haven't been able to download my emails for two days & it sometimes takes 30 sec-2 min to connect to their ip site which transfers to aol which is slow connecting after leaving home pg,I don't know if its one or all three working against me,all I can say is keep trying link to see if you can connect.

I'm ready to dump the whole thing & goto satellite or cable.
 
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El Toro
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PostPosted: Fri Mar 29, 2013 5:36 am    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

Hi Joe, I have FIOS and they're having a sale now. You can get the internet, free local phone calls and about 300 channels of TV. Cost is about $89.00 for one TV set. They installed all new fiber optic cables in my area in 2009. I even helped to pull some cables. We had Comcast for years, but gave it up when they took off channels and put the price up. Hal
 
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El Toro
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PostPosted: Fri Mar 29, 2013 5:39 am    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

I also get AOL with the FIOS and I really like it better. You can receive and send emails on both, but I usually use AOL. Pictures can be attached to the emails. Hal
 
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El Toro
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PostPosted: Fri Mar 29, 2013 11:50 am    Post subject: Re: Timing on a Briggs and Stratton engine Reply to specific post Reply with quote

Here's Joe's link again. Hal
Untitled URL Link

 
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