Craftsman 107277740 zero-turn rear-engine riding lawn mower Parts

To identify the engine on your Craftsman 107277740 rear-engine riding mower, we match the engine’s brand and model information from the engine label (usually on the blower housing or valve cover) to the mower’s documentation and parts diagrams in the Craftsman 107277740 owner's manual.

Where to find the engine identification label

On most rear-engine riding mowers, the engine ID is on a sticker or metal tag mounted directly on the engine. Check these common spots:

• Top of the engine shroud (blower housing) near the recoil or air intake
• Valve cover area (often on the front or side of the engine)
• Near the spark plug wire and ignition coil area
• On the engine block near the muffler or starter
• Under the seat area where the engine is mounted (use a flashlight)

What to write down (and why)

Record the engine details exactly as shown; this is what we use to match tune-up parts and engine-specific diagrams.

• Engine brand (commonly Briggs & Stratton or Kohler on this style of rider)
• Engine model
• Type
• Code (or spec number)
• Serial number

Quick ID checklist

What you see on the label	What it helps with
Model / Type / Code	Correct carburetor, air filter, ignition parts
Spec number	Exact configuration for that engine family
Serial number	Production run details for service reference

If the label is missing or unreadable

Use these practical cross-checks to narrow it down:

• Look at the engine brand referenced in operating procedures (some steps differ by engine brand)
• Compare the muffler shape, air filter housing, and carburetor layout to the illustrated parts breakdown
• Use the mower’s model number (107277740) to locate engine-related parts listings and diagrams

Safety steps before inspecting the engine

We follow the same safety approach used for service work: stop the engine, remove the key, and disconnect the spark plug wire before reaching near moving parts.

• Park on a flat surface and let the engine cool
• Turn the ignition switch to OFF and remove the key
• Disengage the PTO and set controls to PARK
• Disconnect the spark plug wire before putting hands near belts, pulleys, or the transaxle fan area

Why it matters

Engine identification prevents wrong-part returns and helps you get the right maintenance items (fuel line, filters, belts) the first time, especially when the same mower model can be built with different engine variants.

Last updated: January 2026

On the Craftsman 107277740 rear-engine riding mower, we read the serial number directly from the identification tag under the seat; tilt the seat forward to see the ID tag and record the unit serial number exactly as shown. Use that number when ordering parts or requesting service. See the 107277740 operator's manual.

Where to find the serial number (ID tag)

The operator’s manual specifies the ID tag location under the seat.

• Park on a level surface and set the parking brake.
• Turn the key off and remove it.
• Tilt the seat forward.
• Locate the identification tag on the underside of the seat area.
• Write down the unit serial number exactly (include any letters).

What the numbers mean (what to record)

When you contact support or order parts, we recommend recording these items from the tag and engine label:

Item to record	What it’s used for
Model name/number (107277740)	Confirms the correct mower family
Unit serial number	Identifies your exact production unit
Stock number (if listed)	Helps match parts lists
Engine model and engine code/serial	Needed for engine-specific parts

Tips to avoid mix-ups

Serial and model information can be easy to misread on outdoor equipment. These steps prevent wrong-part orders:

• Clean the tag gently so every character is readable.
• Treat 0 (zero) and O (letter O) as different characters.
• Copy hyphens and spaces only if they appear on the tag.
• Keep a photo of the tag on your phone for reference.

Why it matters

Craftsman riding mowers often have multiple configurations (deck size, engine type, accessories). The unit serial number and engine code/serial help us match the correct diagrams and parts for your exact 107277740 mower.

Last updated: January 2026

Craftsman model 107277740 is part of the ZTS 7500 zero-turn rear-engine rider line; the documentation we have for this model is an Operator’s Manual revision “06” and a 50-inch mulch kit installation sheet, which places this model in the mid-2000s era. For the most accurate production-year range, match the mower’s product date on the ID label to the specifications in the 107277740 operator’s manual.

How to pinpoint the exact year on your mower

The most reliable way to identify the build year is to use the mower’s product label (not the deck size or engine brand alone).

• Locate the model and serial label (commonly under the seat, on the frame near the rear, or by the engine)
• Write down the full serial number and any date code shown
• Compare the engine family listed in the manual (22HP Briggs and Stratton for model 107.27774) to what’s installed
• Use the parts diagrams and spec sections in the manual to confirm you have 107277740 (not a close model like 107277720)
• If the label is damaged, use major component IDs (muffler style, deck type, control layout) to cross-check

What the documentation tells us (and what it implies)

The Operator’s Manual for the ZTS 7500 line shows model 107.27774 (the same model family as 107277740) and includes a manual revision marked “Revision 06”, which is consistent with mid-2000s documentation.

What you have	What it helps confirm	What it does not confirm
Manual revision “06”	Era of documentation	Exact first and last production year
50-inch mulch kit sheet	Deck size family (50-inch)	Model-year range
Serial/date code on ID label	Exact build timing	Nothing else needed

Why it matters

The production year affects parts fitment for items like the transaxle, wiring, deck hardware, and engine components. Confirming the year helps us match the correct Craftsman parts and avoid returns.

Last updated: January 2026