Craftsman 917274762 lawn tractor Parts

The Craftsman lawn tractor model 917274762 uses a Briggs & Stratton engine model 31P777-0299-E1. This engine is paired with an 18.5 HP, 42-inch mower deck configuration as shown in the tractor’s documentation; confirm your exact engine tag details in the owner's manual.

How to confirm the engine on your tractor

Use these quick checks to match what’s on your machine to the manual listing:

• Look for the engine ID label on the blower housing or valve cover area.
• Match the model and type numbers (example: 31P777 and 0299-E1).
• Verify the tractor model tag reads 917274762.
• Compare the engine parts breakdown section to what you see on the engine.
• If the label is dirty, wipe it clean and recheck the stamped characters.

Engine identification: what the numbers mean

Briggs & Stratton uses a model/type format. Here’s how to read it:

Where you see it	Example for this tractor	What it tells you
Engine model	31P777	Engine family and displacement group
Engine type	0299-E1	Exact build configuration (carb, governor, charging, etc.)
Tractor model	917274762	The Craftsman chassis and deck configuration

Why it matters

Getting the engine model and type right prevents wrong-part orders and wrong tune-up specs. It affects common service items like spark plug selection, air filter fit, fuel solenoid style, and carburetor parts.

Related parts you might replace during engine or deck service

These parts are commonly replaced when you’re doing seasonal maintenance or addressing cut-quality issues:

• Solenoid with brass plunger 532146154 (starter solenoid)
• Lawn tractor ignition switch 532193350 (no-crank or intermittent start symptoms)
• Molded ignition key 532140403 (worn key or broken head)
• Lawn tractor ground drive belt 532140294 (slipping drive or poor ground speed)

Last updated: February 2026

Craftsman does not manufacture its own small engines; the engine maker depends on the specific tractor and engine family. For Craftsman lawn tractor model 917274762, the engine shown in the manual is a Briggs & Stratton engine (Briggs model 31P777-0299-E1); confirm on the engine ID label and in the owner's manual.

How to confirm the engine manufacturer on your mower

Use the engine’s ID tag, not the hood decal or advertised cc, to identify who made it.

• Find the engine label on the blower housing, valve cover, or near the starter
• Record the model, type, and code from the label
• Match that information to the engine listing in the owner's manual
• Use the tractor model 917274762 for chassis and deck parts (belts, blades, steering)
• Use the engine model and type for engine parts (carburetor, ignition, gaskets)

420cc vs. what your tractor uses

“420cc” is a displacement size used across many riding mower engines, but parts lookup is always based on the engine model and type.

What you’re identifying	Where to look	What it’s used for
Tractor model 917274762	Frame tag under the seat or on the chassis	Deck, drive, steering, electrical parts
Engine maker and model (example: Briggs & Stratton 31P777-0299-E1)	Engine ID label and manual	Tune-up and internal engine parts

Why it matters

Ordering by “Craftsman 420cc” often leads to mismatched ignition parts, carburetor kits, or gasket sets. Using the exact engine model and type keeps the fit correct and speeds up repair.

Last updated: February 2026

For Craftsman lawn tractor model 917274762, use a high-quality detergent 4-cycle engine oil and select the SAE viscosity grade based on your expected outdoor temperature. Our guidance matches the lubrication and oil-viscosity chart information in the owner's manual.

What the manual calls for

The manual specifies:

• Use detergent oil with API service classification SG-SL
• Choose SAE viscosity by temperature (oil viscosity chart)
• Check oil level regularly to prevent engine damage from running low

SAE viscosity quick guide (typical choices)

Use the viscosity that matches the temperatures you mow in most often.

• SAE 30: warm-weather mowing
• 10W-30: variable spring and fall temperatures
• 5W-30: cold-weather starting
• If you use a multi-viscosity oil in hot weather, check the oil level more frequently

Expected temperature range	Common SAE viscosity	Best for
Below 32°F	5W-30	Easier cold starts
Around 32°F and above	SAE 30	Warm-weather operation
Mixed temperatures	10W-30	General use in changing seasons

Oil level and change intervals

These habits prevent hard starting, smoking, and premature wear:

• Check oil with the tractor on level ground
• Keep oil at the FULL mark on the dipstick; do not overfill
• Check the crankcase oil level before starting and after each 8 hours of operation
• Change oil every 50 hours or at least once a year

Why it matters

Correct oil type and viscosity keep the engine properly lubricated under load, improve starting in cold weather, and reduce wear. Frequent oil-level checks are especially important on riding mowers because low oil quickly leads to overheating and damage.

Last updated: February 2026