Craftsman CMXGRAM201304 (2021) t140 lawn mower Parts

Yes; replacing the engine on your Craftsman CMXGRAM201304 front-engine lawn tractor is worth it when the deck, frame, steering, and transmission are solid and the total cost stays well below a comparable new rider. Use the CMXGRAM201304 owner's manual for safe service steps and maintenance checks.

Quick decision checklist

An engine replacement is the right move when most of these are true:

• The mower deck is not rusted through, cracked, or badly bent
• The frame and steering feel tight (no major looseness or damage)
• The transmission drives normally and the PTO engagement works
• The failure is clearly engine-related (no compression, severe smoking, internal damage)
• You are ready to keep up with routine maintenance after the swap (oil, air filter, cooling fins)

Cost and value: simple rule of thumb

Use this to decide quickly:

Situation	Usually best	Why it matters
Tractor is 1 to 6 years old and otherwise reliable	Replace the engine	You protect a good chassis and restore reliability
Tractor is 8+ years old or has deck/frame damage	Replace the mower	Other major repairs often follow and costs stack up
Total repair cost is near half the price of a comparable new rider	Replace the mower	Value and downtime usually favor new

Checks to do before you commit

These prevent spending money on an engine when another issue is the real problem:

• Fix excessive vibration first; loose or bent blades can cause major shaking
• Clean debris from around the engine cooling fins and housing to prevent overheating symptoms
• Verify basics like oil level, air cleaner condition, and spark plug condition

Why it matters

A new engine restores power, but it will not correct deck, blade, or airflow problems. Following the operating guidance in the manual also helps protect belts and the PTO system after the repair.

Getting the right parts

Match parts by the full model number CMXGRAM201304. If you do not see what you need in the model parts list, search by model on Sears PartsDirect.

Last updated: February 2026

Common problems on a Craftsman CMXGRAM201304 (2021) front-engine lawn tractor include rough idle or hesitation at high RPM (often spark plug or air cleaner related), excessive vibration (blade or spindle issues), uneven cutting (deck level or tire pressure), and poor mulching (engine speed, wet or tall grass, or dull blades). See the CMXGRAM201304 owner's manual for model-specific operating and troubleshooting guidance.

Most common symptoms and what they usually mean

• Won’t mulch well: throttle not in FAST, wet grass, grass too tall, or dull blade
• Uneven cut: deck not leveled, dull blade, or uneven tire pressure
• Excessive vibration: loose/unbalanced blades, or a damaged/bent blade
• Hesitates at high RPM: spark plug gap too close
• Rough idle: fouled spark plug and/or dirty air cleaner

Quick checks we recommend first (fast, high-impact)

• Set the throttle to FAST while mowing; low engine speed hurts cut quality and mulching.
• Inspect and clean the air cleaner; replace it if it is oil-soaked or heavily clogged.
• Pull and inspect the spark plug; clean/replace it and set the correct gap.
• Check blade condition (dull, bent) and confirm blades and spindles are tight.
• Verify tire pressure on all four tires; mismatched pressure commonly causes an uneven cut.
• If vibration is present, stop mowing and correct it before continuing to prevent further damage.

Operating issues that look like “problems” but are really mowing conditions

The manual notes several conditions that commonly lead to poor performance or premature wear.

What you notice	Common cause	What to do
Poor cut quality at speed	Ground speed too high	Slow down; overlap passes about 3 in.
Belt or PTO wear concerns	Engaging deck while lowered in grass	Raise deck or move to a non-grassy area before engaging
Stalling or bogging in heavy growth	Grass too tall or too dense	Take a higher first pass, then mow again lower

Why it matters

Many “mower problems” are preventable. Correct throttle setting, sharp blades, a clean air filter, and a leveled deck improve cut quality, reduce vibration, and help protect wear items like the V-belt and PTO clutch.

For replacement parts by model number, use the parts list for CMXGRAM201304 or search on Sears PartsDirect.

Last updated: February 2026

Craftsman uses engines from multiple manufacturers across its riding mower and lawn tractor lineup, so the engine brand on a Craftsman CMXGRAM201304 (2021) front-engine lawn tractor depends on the specific build and engine family installed. The most reliable way to confirm your exact engine make and model is to check the engine ID label and the tractor’s model plate referenced in the CMXGRAM201304 owner's manual.

How to identify the engine brand on your CMXGRAM201304

We recommend confirming the engine manufacturer using the engine’s own identification label, then matching that to the parts list for your tractor.

• Lift the seat and locate the tractor model plate under the seat pan (record model and serial).
• Open the hood and look for an engine ID label on the blower housing, valve cover, or near the starter.
• Write down the engine model, type, and code (common on Briggs & Stratton) or the engine spec number (common on other brands).
• Compare what you wrote down to the engine section in your documentation and parts diagrams.
• Use your recorded model and serial when searching parts on Sears PartsDirect.

Common engine brands used on Craftsman lawn tractors

Across Craftsman lawn tractors, you will commonly see engines from a few major manufacturers. Which one you have is determined by the exact configuration.

Engine brand (common)	What you’ll usually see on the label	Why it matters for parts
Briggs & Stratton	Model/Type/Code format	Helps match carburetor, air filter, starter, and tune-up parts
Kohler	Model and spec number	Spec number is key for correct ignition and fuel parts
Kawasaki	Model and spec number	Ensures correct filters, plugs, and fuel system parts

Why it matters

Engine parts are selected by the engine identification, not just the tractor model number. Confirming the engine brand and ID prevents ordering the wrong air filter, spark plug, fuel filter, starter, or carburetor parts for your Craftsman T140-style tractor.

Last updated: February 2026