Craftsman 917271090 lawn tractor Parts

For a Craftsman lawn tractor model 917271090, engine replacement typically runs $600 to $2,500 installed (parts plus labor). The total depends on the exact engine, whether it is a direct bolt-on swap, and how much shop time is needed for wiring, throttle/choke linkages, and belt/pulley setup.

What drives the total cost

• Engine price: Most riding mower engines fall around $400 to $1,800 depending on horsepower and brand.
• Labor time: Commonly 4 to 8 hours for a riding lawn tractor engine swap.
• Extra parts: Fuel line, clamps, battery cables, muffler hardware, belts, or pulleys if worn.
• Shop rates: Local labor rates vary widely.
• Condition issues: Rusted fasteners, damaged wiring, or a worn PTO/clutch system can add time.

Typical cost breakdown (installed)

Cost item	Typical range	Notes
Replacement engine	$400 to $1,800	Biggest variable; match crankshaft size and mounting pattern
Labor	$300 to $1,200	Based on 4 to 8 hours at local rates
Misc. parts/supplies	$25 to $200	Filters, fuel line, hardware, belts as needed
Estimated total	$600 to $2,500	Most jobs land in the middle of this range

Before you replace the engine (quick checks)

Many “bad engine” symptoms are caused by starting or safety interlock issues. We recommend checking these first using the 917271090 owner’s manual:

• Battery charge and cable connections
• Fuse and wiring condition
• Starter solenoid and starter operation
• Operator presence and interlock switches (seat, brake/clutch, PTO)
• Fuel quality and basic tune-up items (air filter, spark plug)

Why it matters

An engine swap can cost close to the value of an older riding mower. Pricing the engine, labor, and any related drive or deck repairs up front helps you decide whether repair, rebuild, or replacement makes the most sense.

Last updated: February 2026

The Craftsman lawn tractor model 917271090 uses a 16.5 HP low-emission gas engine (as listed in the tractor’s documentation). For the most accurate engine details for your exact build, match the engine model and type using the identification section in the 917271090 owner's manual.

How to identify the exact engine on your tractor

Even within the same tractor model, the engine’s exact model number is confirmed from the engine ID label (not the hood decal).

• Park on a flat surface, set the parking brake, and remove the key
• Let the engine cool completely before touching the muffler or shrouds
• Locate the engine identification label (commonly on the blower housing, valve cover area, or near the starter)
• Write down the engine model, type, and code (or spec number)
• Use those numbers when ordering engine parts like a spark plug, air filter, or fuel filter

What we can confirm from the manual (model 917271090)

The manual calls out the tractor as a 16.5 HP, 42-inch mower configuration and includes operating and maintenance specs.

Item	Spec shown for 917271090
Engine power rating	16.5 HP
Mower deck size	42 in
Fuel capacity	1.25 gallons (unleaded regular)
Spark plug	Champion RC12YC (0.030 in gap)

Why it matters

Using the correct engine identification prevents wrong-part returns and helps you get the right tune-up items (spark plug, oil type, filters) and the correct procedures for starting, maintenance, and troubleshooting.

Last updated: February 2026

A Craftsman “6.75” walk-behind mower does not have one universal model number; “6.75” is an engine power label used across many mowers. For the Craftsman equipment covered by this page, the model number is 917271090, which is a front-engine lawn tractor (not a 6.75 walk-behind mower); confirm your exact mower’s model from the ID tag and the 917271090 owner's manual.

Where to find the correct model number on a Craftsman mower

Use the mower’s product ID label, not the engine cover decal.

• Check under the seat on riding mowers and lawn tractors
• Look on the frame rail near the rear wheels
• Check under the hood near the dash tower
• For walk-behind mowers, look on the rear deck housing near the bagger door
• Write down the full model number exactly as shown (all digits)

“6.75” vs model number: what’s the difference?

“6.75” typically refers to an engine rating, while the model number identifies the complete Craftsman machine (deck, transmission, steering, and safety interlocks).

Label you see	What it identifies	Example
6.75	Engine power family/marketing label	“6.75” on engine shroud
917.xxxxxx	Complete Craftsman unit model	917271090
Part number	Individual replacement part	134149

Why it matters

Using the correct model number ensures you get the right parts and diagrams. For example, the 917271090 tractor uses a 42-inch mower deck and lists parts like the husqvarna lawn tractor mulching blade, 21-in 532134149 in its deck breakdown; a 6.75 walk-behind mower uses different blades, belts, and hardware.

Last updated: February 2026

Craftsman lawn tractor model 917271090 does not have a single “model year” printed in the parts manual; it is identified by model and serial information on the tractor itself. Use the model/serial tag on your machine and the parts breakdown in the 917271090 owner's manual to pin down the exact production timeframe.

How to find the date information on the tractor

Check the tractor’s identification tag first; that is what ties your unit to a specific build period.

• Look under the seat, on the frame near the rear fender, or near the engine compartment
• Confirm the model reads 917.271090 (a dot is often included on the tag)
• Write down the full serial number exactly as shown
• Compare your tractor’s chassis and steering layout to the diagrams in the manual
• Note key configuration clues such as deck size and engine brand

What the manual confirms (and what it does not)

The manual repeatedly labels assemblies as TRACTOR MODEL NUMBER 917.271090, which confirms you have the correct model documentation. The manual is designed for operation, maintenance, and parts identification; the build date is determined from the tractor’s serial number and ID tag.

Quick reference

Source	What it tells you	Best use
Tractor ID tag	Model and serial number	Dating and exact identification
Owner’s manual	Model-specific diagrams and part callouts	Matching parts and assemblies
Parts diagrams	Component layouts (chassis, steering, lift)	Verifying configuration before ordering

Why it matters

Craftsman tractors can share similar LT platforms across multiple years; using the model/serial tag prevents ordering the wrong belt, blade, steering, or lift components for your exact configuration.

Last updated: February 2026