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 How to swap engine pulley on a briggs?

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Mark288
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PostSubject: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeSun Jan 20, 2013 11:06 am

Hey guys, i have an mtd mower. 18 hp opposed twin cyllender. I did a rear pulley swap, with the 3 inch (steel) welded it to the shaft, becasue i had too many problems with the aluminum ones. Anyway, the pulley that comes off the crankshaft on the engine, how do you take that off? the stock is a 3.5 inch i think, thats too small for me. I took the bolt out and its like machine pressed in there and me or my dad coudnt get it off. Any of you guys know how to take that off? Any info is much appreciated. Thanks
mark Very Happy
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offroadredneck
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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeSun Jan 20, 2013 1:11 pm

Make sure you
took the center bolt of and try a pully puller
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thatrandomguy
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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeSun Jan 20, 2013 1:15 pm

buy or make a puller.
i couldnt get my pulley off last week so i made a puller myself out of flat stock and long bolts.
if you dont know what these pullers look like here's a picture
How to swap engine pulley on a briggs? Pullytrekker-3-arm-300240_zps9c956e71

i made one with two arms.

i can make a picture if you want?
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dked41
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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeSun Jan 20, 2013 2:24 pm

Some of the car parts stores rent or borrow tools. A deposit may be required, returned when you bring the tool back.
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Chopperhed
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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeSun Jan 20, 2013 3:28 pm

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dangeroustoys56
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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeSun Jan 20, 2013 4:46 pm

Most motor pulley's ive encountered have come off fairly easy , remove the bolt - few taps with a hammer on the deck pulley part and nearly fall off on their own. One pulley on a 12HP teccy i have would fight me all the way , even after never seizing it.

I had one odd one on my 88 kleen kut - instead of a bolt, it had a metal 'slug' holding the pulley on - had to cut the pulley off - that was an 18HP twin briggs opposed.

If you plan on saving the pulley, be careful you dont bend the pulley trying to get it off.
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tractorboy567
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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeMon Jan 21, 2013 7:18 pm

maybe try heating it up, putting penetrating oil on it, or just use a pulley puller.
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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitimeMon Jan 21, 2013 8:32 pm

I welded a large nut to the bottom of the pulley
then put a small bolt through the nut to act as like a push rod
i threaded the larger bolt into the nut to push on the small bolt.

i switched to longer push bolts the farther i got the pulley off.

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PostSubject: Re: How to swap engine pulley on a briggs?   How to swap engine pulley on a briggs? Icon_minitime

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