I am a semi-novice at small engine stuff; I've done some repairs before and had varying degrees of success. IT guy by trade. Love the feeling from fixing myself and learning. Willing to gamble.
Lawnmower is an inherited Snapper NTX that uses a B&S 121S07-2116-F1
This is an electric start only mower.
It has always started fine when it turns over; however, the starter has had increasing difficultly turning the engine over the last 10 mows and now it will not turn over at all.
I pulled off the top plastic and can turn the flywheel manually (spark plug disconnected) easily.
I tried a different battery.
I jumped the starter directly to a battery.
Still not enough ooomph in the starter to turn it over... i can tell it is trying.
Since these starters are North of $100 and, reading around the web, are prone to failure I was thinking of converting it to pull start unless all I would need to replace are the starter gears.
Questions:
What are the chances I would only need the gears labeled 937 for this starter? How would I test that to determine if the gears are the problem or something in the starter itself?
If I went with the pull start conversion would my current flywheel work with just replacing the round plastic cap/top with the rewind starter?
I currently have parts ( in diagram )
304A
73
What I'm wonder is can I just replace 73 with part 608. Will it work with the four aluminum posts on my flywheel (see next section)
I have Flywheel 23... A better stock picture is below:
Picture of lawnmower:
Thanks in advance!
Jeff from Little Rock, AR
Lawnmower is an inherited Snapper NTX that uses a B&S 121S07-2116-F1
This is an electric start only mower.
It has always started fine when it turns over; however, the starter has had increasing difficultly turning the engine over the last 10 mows and now it will not turn over at all.
I pulled off the top plastic and can turn the flywheel manually (spark plug disconnected) easily.
I tried a different battery.
I jumped the starter directly to a battery.
Still not enough ooomph in the starter to turn it over... i can tell it is trying.
Since these starters are North of $100 and, reading around the web, are prone to failure I was thinking of converting it to pull start unless all I would need to replace are the starter gears.
Questions:
What are the chances I would only need the gears labeled 937 for this starter? How would I test that to determine if the gears are the problem or something in the starter itself?
If I went with the pull start conversion would my current flywheel work with just replacing the round plastic cap/top with the rewind starter?
I currently have parts ( in diagram )
304A
73
What I'm wonder is can I just replace 73 with part 608. Will it work with the four aluminum posts on my flywheel (see next section)
I have Flywheel 23... A better stock picture is below:
Picture of lawnmower:
Thanks in advance!
Jeff from Little Rock, AR
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