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Craftsman 15.5 HP I/C OHV Hydrostatic 42" Deck/Briggs & Stratton Engine
Model: 28N707
Type: 0171 01
Code: 9511034A

Hello,
After starting my mower multiple times in a row, it appears my Pinion gear shredded I have never worked on a starter before, and I hope this is all that is wrong, unless any of you can see anything else. There is a metal clamp above the Pinion gear (see photo), how do I go about removing this piece to get to the Pinion gear? And is there any other tricks lying before me after this piece is removed?

Thanks for your help!

Hi sheets

Try to push down on the bigger piece on top of shaft then you should be ale to take of the snap ring on the shaft, when you push down on and the bigger part and hole it down that should give you room to get it off.You will need a snap ring pliers to do it. I think that will work. Good luck:biggrin:

noma said:

Hi sheets

Try to push down on the bigger piece on top of shaft then you should be ale to take of the snap ring on the shaft, when you push down on and the bigger part and hole it down that should give you room to get it off.You will need a snap ring pliers to do it. I think that will work. Good luck:biggrin:

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I think it's really stupid that they would make them with plastic teeth and not steel ones..
Cars use steel ones why not small engines ya know?

Trcustoms719 said:

I think it's really stupid that they would make them with plastic teeth and not steel ones..
Cars use steel ones why not small engines ya know?

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I completely agree. I was very shocked when I saw that on this mower, not only because it seems very cheap, but because it is amazing that it started in the first place with plastic on metal.

They are plastic to prevent damage/wear of the steel ring gear. Tose plastic gears are pretty tough and are inexpensive.

jeff said:

They are plastic to prevent damage/wear of the steel ring gear. Tose plastic gears are pretty tough and are inexpensive.

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Very good point, thank you for making me feel less of a man for not thinking of that :smile:

jeff said:

They are plastic to prevent damage/wear of the steel ring gear. Tose plastic gears are pretty tough and are inexpensive.

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I know, but why are cars starter gears not plastic then?
A flywheel is much much harder to replace on a car then a lawn mower, get my point.

noma said:

Hi sheets

Try to push down on the bigger piece on top of shaft then you should be ale to take of the snap ring on the shaft, when you push down on and the bigger part and hole it down that should give you room to get it off.You will need a snap ring pliers to do it. I think that will work. Good luck:biggrin:

Click to expand...

Thanks for the help! Starts like a champ, now I need to get it running like a champ On to the next thread!

Trcustoms719 said:

I think it's really stupid that they would make them with plastic teeth and not steel ones..
Cars use steel ones why not small engines ya know?

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They used to make them out of steel, just like cars. Most things are throw-away nowadays.

the steel pinion is used with the steel ring gear on the flywheel. the plastic pinion is used with the aluminum or plastic ring gear on the flywheel.

ILENGINE said:

the steel pinion is used with the steel ring gear on the flywheel. the plastic pinion is used with the aluminum or plastic ring gear on the flywheel.

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If it's plastic on plastic then it makes total sence.
I never saw a fly wheel with a plastic ring gear before, what kinda engine did that come on?
Aluminum ring gear and plastic pinion would make sence too, but i never saw one with that setup either haha.
I work on mostly 80's and 90's briggs and kohler engines.
I've had very few newer or older engines come in.

I have replaced several plastic ring gears on briggs due to stripping of the teeth. the replacement ring gear is aluminum. You have to remove the flywheel and drill out the four rivets and then the new ring gear bolt on. A lot of the briggs engines have aluminum ring gears but very few plastic are still around.

Re: Craftsman starter not engageing

noma said:

Hi sheets

Try to push down on the bigger piece on top of shaft then you should be ale to take of the snap ring on the shaft, when you push down on and the bigger part and hole it down that should give you room to get it off.You will need a snap ring pliers to do it. I think that will work. Good luck:biggrin:

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changed the gear starter spins but does't engage with fly wheel