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help with mower identification.

#1

lawnboywillneverdie

lawnboywillneverdie

i recently aquired 2 mowers and would like some insight on the goods and bad or the rarity of the mowers. posting pics in a sec. model numbers are L21ZPNC and a 7024. never heard of the L21Zpnc so i was wondering what its :tongue:rarity or value is. both of them start on 1 prime first pull good compression


#2

lawnboywillneverdie

lawnboywillneverdie

lawnboywillneverdie said:
i recently aquired 2 mowers and would like some insight on the goods and bad or the rarity of the mowers. posting pics in a sec. model numbers are L21ZPNC and a 7024. never heard of the L21Zpnc so i was wondering what its :tongue:rarity or value is. both of them start on 1 prime first pull good compression
Click to expand...

Vwolla here they are

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#3

lawnboywillneverdie

lawnboywillneverdie

:anyone: can anyone give some insight on the goods and bads of these 2 mowers? please?:confused3:


#4

unclelee

unclelee

Both good machines....they should do you well.
I would fix up the bricktop....they are getting hard to find


#5

Two-Stroke

Two-Stroke

I agree with unclelee that the bricktop (D-series engine) is a nice one to fix up. How's the compression? Any spark?

The other mower has an F-series engine (fine powerplant :thumbsup: ) and what looks like a rusted steel deck. I wouldn't bother with the deck but keep the engine and maybe the wheels.

Ohio is a great location for LB hunting. If you keep your eyes open I'm sure you can find great deals on some really cool mowers. :cool:


#6

K

Kerry

Your 7024 is a 1975,76, or 77. The first number of the serial number will be the same as the last digit in the year. Might want to double check the model numbers of the other mower, doesn't work in Lawnboy's database.


#7

lawnboywillneverdie

lawnboywillneverdie

Kerry said:
Your 7024 is a 1975,76, or 77. The first number of the serial number will be the same as the last digit in the year. Might want to double check the model numbers of the other mower, doesn't work in Lawnboy's database.
Click to expand...

the deck and motor clearly state (*and i made sure to double check this.) it is L21ZPNC heres a little tip try this: "L21ZPN" instead:thumbsup::wink:

my brick is a '77 and the other is an '87 with a beat to **** deck. brick is probably running 50 lbs. compresion cut with it last night and MAN THAT THING IS LOUD AS HELL. is it normal for a magnesium deck to vibrate at the resonant frequency or is it something else?

ill post a vid of the brick running after school if you guys wanna see how it sounds to help diagnose the problem.:smile:
Oh i almost forgot i think my bricktop is running the same speed as my duraforce which doesn't seem right. ill post the vid around 4-5pm


#8

lawnboywillneverdie

lawnboywillneverdie

lawnboywillneverdie said:
the deck and motor clearly state (*and i made sure to double check this.) it is L21ZPNC heres a little tip try this: "L21ZPN" instead:thumbsup::wink:

my brick is a '77 and the other is an '87 with a beat to **** deck. brick is probably running 50 lbs. compresion cut with it last night and MAN THAT THING IS LOUD AS HELL. is it normal for a magnesium deck to vibrate at the resonant frequency or is it something else?

ill post a vid of the brick running after school if you guys wanna see how it sounds to help diagnose the problem.:smile:
Oh i almost forgot i think my bricktop is running the same speed as my duraforce which doesn't seem right. ill post the vid around 4-5pm
Click to expand...

quick question can this f engine go on a v series deck also? they look similar to duraforce decks too minus above deck exhaust. what decks can mate with this engine? if you see one on ebay or something please notify me.:tractor:


#9

Two-Stroke

Two-Stroke

lawnboywillneverdie said:
the deck and motor clearly state (*and i made sure to double check this.) it is L21ZPNC heres a little tip try this: "L21ZPN" instead:thumbsup::wink:

my brick is a '77 and the other is an '87 with a beat to **** deck. brick is probably running 50 lbs. compresion cut with it last night and MAN THAT THING IS LOUD AS HELL. is it normal for a magnesium deck to vibrate at the resonant frequency or is it something else?

ill post a vid of the brick running after school if you guys wanna see how it sounds to help diagnose the problem.:smile:
Oh i almost forgot i think my bricktop is running the same speed as my duraforce which doesn't seem right. ill post the vid around 4-5pm
Click to expand...

If the bricktop is really loud I'd look at the muffler for rust and also the gasket between that and the exhaust port.

If any of these mowers vibrate a lot the first thing to check is blade balance.


#10

Two-Stroke

Two-Stroke

lawnboywillneverdie said:
quick question can this f engine go on a v series deck also? they look similar to duraforce decks too minus above deck exhaust. what decks can mate with this engine? if you see one on ebay or something please notify me.:tractor:
Click to expand...

All F-series engines bolt onto an adapter which then bolts onto the deck. So you need the adapter that goes with the deck that you plan to use. The mufflers can be specific to the deck also.

About buying a deck... I'll bet if you look around your area (CraigsList, etc) you will do much better than eBay pricing (which can get pretty high :confused2: ).


#11

P

Phototone

lawnboywillneverdie said:
my brick is a '77 and the other is an '87 with a beat to **** deck. brick is probably running 50 lbs. compresion cut with it last night and MAN THAT THING IS LOUD AS HELL. is it normal for a magnesium deck to vibrate at the resonant frequency or is it something else?

ill post a vid of the brick running after school if you guys wanna see how it sounds to help diagnose the problem.:smile:
Oh i almost forgot i think my bricktop is running the same speed as my duraforce which doesn't seem right. ill post the vid around 4-5pm
Click to expand...

A bricktop Lawnboy has a cast aluminum muffler under the deck, and is generally much quieter than a later model Lawnboy with a steel muffler. There is a seal between the exhaust port on the cylinder and the muffler plate (the deck the engine block is bolted to). The seal is a flexible "rubber" gasket with a metal sleeve that fits over it. When you bolt the block down, it compresses and seals. It could also be that you are either missing the bottom bolt-on part of the cast muffler, or that the screws are loose and not holding it together sealing it. The muffler is under the deck, between the deck and the blade.


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