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Discussion Starter · #1 · (Edited)
Here's some useful information I've collected and compiled over the past few years on the 12 and 14 series "silver deck" John Deere walk-behind mowers. (I welcome and corrections/additions to the list)

John Deere 12 & 14 Series Walk-Behind Mowers

Decoding the Model Numbers:
1 = 21" mower
2 = 2-cycle engine
4 = 4-cycle engine
S = self-propelled
P = push
Z = zone start
B = BBC (blade brake clutch)
E = electric start w/ BBC
T = Tricycler (mulching)
C = commercial
X = commercial w/ BBC

So a model 14SB indicates 21", 4-cycle engine, self-propelled, and a blade brake clutch; 14PZ indicates 21", 4-cycle engine, push, and zone start; etc., etc.

The 14 series mower models were made with two different 4-cycle engines: the Briggs & Stratton Quantum (on the less expensive models), and the Kawasaki FC150V on the more expensive models. The first Kawasaki FC150V engines introduced had 4.5 hp and later this was upgraded to 5.0 hp and still later to 5.5 hp. I read that the engine displacement was the same on the 4.5, 5.0, and 5.5 hp engines, but the changes in horsepower ratings were due primarily to differences in the main jet of the carburetor and the ignition setup.

On the self-propelled models, there are two transmission types: 2-speed and 5-speed. Both are made by Tuff Torq (Kanzaki). The Briggs engine models used the 2-speed and the Kawasaki engines used the 5-speed.

BBC (blade brake control) was available on Kawasaki engine models (like the 14PB and SB) as well as the model 12PB and 12SB with the Briggs 2-cycle engine. The zone start Briggs engine models (14PZ, 14SZ) used a flywheel brake for blade control and this brake would stop the engine when the bar on the handle was released.

The Tricycler was a unit set up from the factory for mulching. It came with a mulching plug and a grass bag. A Tricycler Conversion Kit was also available as an accessory. Mulching Kit (BM17484) included a mulching plug (M112582), mulching blade (M125413), and rear cover safety decal (M112911). Conversion Kit (BM17497) included these items plus a Tricycler label (M113068) and the side discharge chute (M76488).

The commercial models (12PC, 14SC and 14SX) had steel wheels for durability.

12PB:
1990-1991
Briggs & Stratton 2-cycle engine (96722 I/C)
Push
Recoil start
Briggs Magnetron Ignition

12PC:
19??-19??
Briggs & Stratton 2-cycle engine (96722 I/C)
(Commercial model)
Push
Recoil start
Briggs Magnetron Ignition

12SB:
1989-1992
Briggs & Stratton 2-cycle engine (96722 I/C)
Self-propelled (5-speed)
Recoil start
Briggs Magnetron Ignition

14PB:
1989-1993
Kawasaki FC150V 4-cycle engine
Push
Recoil start
Blade Brake Control
Flywheel magneto ignition

14PT:
1993-1994
Kawasaki FC150V 4-cycle engine
Push
Recoil (zone start)
Flywheel magneto ignition

14PZ:
1991-1997
Briggs & Stratton 4-cycle engine (122700 series)
Push
Recoil (zone start)
Briggs Magnetron Ignition

14SB:
1989-1997
Kawasaki FC150V 4-cycle engine
Self-propelled (5-speed)
Recoil start
Blade brake control
Flywheel magneto ignition
Pressurized lubrication

14SBs:
1997
Kawasaki FC150V 4-cycle engine
Self-propelled (5-speed)
Recoil start
Blade brake control
Flywheel magneto ignition
Splash lubrication

14SC:
1993-1994
Kawasaki FC150V 4-cycle engine
(Commercial model)
Self-propelled (5-speed)
Recoil (zone start)
Flywheel magneto ignition

14SE:
1989-1997
Kawasaki FC150V 4-cycle engine
Self-propelled (5-speed)
Electric (key start)
Flywheel magneto ignition

14ST:
1993-1994
Kawasaki FC150V 4-cycle engine
Self-propelled (2-speed)
Recoil (zone start)
Flywheel magneto ignition

14SX:
1995-1997
Kawasaki FC150V 4-cycle engine
(Commercial model)
Self-propelled (5-speed)
Recoil (zone start)
Blade brake control
Flywheel magneto ignition

14SZ:
1991-1997
Briggs & Stratton 4-cycle engine (122700 or 124700 series)
Self-propelled (2-speed)
Recoil (zone start)
Briggs Magnetron Ignition
 

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Thank you for the information! This will be a great resource for these machines. :)
 

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An excellent resource. Thanks for compiling that.

I made it a sticky so it's always near the top of the John Deere forum.
 

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Discussion Starter · #4 ·
An excellent resource. Thanks for compiling that.

I made it a sticky so it's always near the top of the John Deere forum.
Thanks for doing that!

Is there a way that I can go back into the post to edit and update it in the future as I learn more or discover things that need correcting?
 

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As a sticky it will always be near the top of the John Deere forum. If there is additional information you want to add, you can either create a new post to go along with those already there, or forward the information to a moderator who can add it to your original after your edit option has expired.
 

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I like what you have done, I was going to do the same thing, but haven't found the time to compile the information. Cool deal! I know we all know, but don't forget that the 14SE had a BBC too!!!
 

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Discussion Starter · #8 ·
Corrected and updated version of the information:

John Deere 12 & 14 Series Walk-Behind Mowers

Decoding the Model Numbers:
1 = 21" mower
2 = 2-cycle engine
4 = 4-cycle engine
S = self-propelled
P = push
Z = zone start
B = BBC (blade brake clutch)
E = electric start w/ BBC
T = Tricycler (mulching)
C = commercial
X = commercial w/ BBC

So a model 14SB indicates 21", 4-cycle engine, self-propelled, and a blade brake clutch; 14PZ indicates 21", 4-cycle engine, push, and zone start; etc., etc.

The 14 series mower models were made with two different 4-cycle engines: the Briggs & Stratton Quantum (on the less expensive models), and the Kawasaki FC150V on the more expensive models. The first Kawasaki FC150V engines introduced had 4.5 hp and later this was upgraded to 5.0 hp and still later to 5.5 hp. I read that the engine displacement was the same on the 4.5, 5.0, and 5.5 hp engines, but the changes in horsepower ratings were due primarily to differences in the main jet of the carburetor and the ignition setup.

On the self-propelled models, there are two transmission types: 2-speed and 5-speed. Both are Tuff Torq transmissions made by Kanzaki. The Briggs engine models used the 2-speed and the Kawasaki engines used the 5-speed.

BBC (blade brake control) was available on Kawasaki engine models (like the 14PB and SB) as well as the model 12PB and 12SB with the Briggs 2-cycle engine. The zone start Briggs engine models (14PZ, 14SZ) used a flywheel brake for blade control and this brake would stop the engine when the bar on the handle was released.

The Tricycler was a unit set up from the factory for mulching. It came with a mulching plug and a grass bag. A Tricycler Conversion Kit was also available as an accessory. Mulching Kit (BM17484) included a mulching plug (M112582), mulching blade (M125413), and rear cover safety decal (M112911). Conversion Kit (BM17497) included these items plus a Tricycler label (M113068) and the side discharge chute (M76488).

The commercial models (12PC, 14SC and 14SX) had steel wheels for durability.

12PB:
1990-1991
Briggs & Stratton 2-cycle engine (96722 I/C)
Push
Recoil start
Briggs Magnetron Ignition

12PC:
19??-19??
Briggs & Stratton 2-cycle engine (96722 I/C)
(Commercial model)
Push
Recoil start
Briggs Magnetron Ignition

12SB:
1989-1992
Briggs & Stratton 2-cycle engine (96722 I/C)
Self-propelled (5-speed)
Recoil start
Briggs Magnetron Ignition

14PB:
1989-1993
Kawasaki FC150V 4-cycle engine
Push
Recoil start
Blade Brake Control
Flywheel magneto ignition

14PT:
1993-1994
Kawasaki FC150V 4-cycle engine
Push
Recoil (zone start)
Flywheel magneto ignition

14PZ:
1991-1997
Briggs & Stratton 4-cycle engine (122700 series)
Push
Recoil (zone start)
Briggs Magnetron Ignition

14SB:
1989-1997
Kawasaki FC150V 4-cycle engine
Self-propelled (5-speed)
Recoil start
Blade brake control
Flywheel magneto ignition
Pressurized lubrication

14SBs:
1997
Kawasaki FC150V 4-cycle engine
Self-propelled (5-speed)
Recoil start
Blade brake control
Flywheel magneto ignition
Splash lubrication

14SC:
1993-1994
Kawasaki FC150V 4-cycle engine
(Commercial model)
Self-propelled (5-speed)
Recoil (zone start)
Flywheel magneto ignition

14SE:
1989-1997
Kawasaki FC150V 4-cycle engine
Self-propelled (5-speed)
Electric (key start)
Blade brake control
Flywheel magneto ignition

14ST:
1993-1994
Kawasaki FC150V 4-cycle engine
Self-propelled (2-speed)
Recoil (zone start)
Flywheel magneto ignition

14SX:
1995-1997
Kawasaki FC150V 4-cycle engine
(Commercial model)
Self-propelled (5-speed)
Recoil (zone start)
Blade brake control
Flywheel magneto ignition

14SZ:
1991-1997
Briggs & Stratton 4-cycle engine (122700 or 124700 series)
Self-propelled (2-speed)
Recoil (zone start)
Briggs Magnetron Ignition
 
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