Craftsman 917270671 42" lawn tractor Parts

For Craftsman lawn tractor model 917270671, use SAE 30 4-cycle engine oil when temperatures are above 32°F, and SAE 5W-30 4-cycle engine oil when temperatures are below 32°F. The engine oil capacity is 3.0 pints; confirm fill level on the dipstick.

Our recommendation comes from the product specifications in the 917270671 owner’s manual. Use a high-quality detergent oil that meets API service SF, SG, or SH.

• Above 32°F: SAE 30
• Below 32°F: SAE 5W-30
• Use 4-cycle engine oil only (do not mix oil into the gasoline)
• Check oil level on level ground before each use
• Change oil about every 25 hours of operation (or at least annually)

Using the wrong viscosity can increase oil consumption or reduce lubrication. For best results:

• Let the engine warm briefly before heavy mowing
• Recheck the dipstick after adding oil; do not overfill
• Keep the oil fill area clean so dirt does not enter the crankcase
• If you use multi-viscosity oil in warm weather, check the oil level more often
• Store oil containers sealed to prevent contamination

Correct engine oil protects internal parts, reduces heat and wear, and helps your Craftsman 42-inch lawn tractor deliver consistent power. It also helps prevent hard starting and premature engine damage.

Last updated: January 2026

The Craftsman riding lawn mower model 917270671 uses a Briggs & Stratton single-cylinder engine; the engine model listed for this tractor is 311707-0132-E1. For the exact engine service details (tune-up specs, adjustments, and maintenance intervals), use the 917270671 owner’s manual.

From the model-specific documentation, this tractor is a 42-inch mower with electric start and a 6-speed transaxle, and it is equipped with a Briggs & Stratton engine (model 311707-0132-E1). Key engine-related specs called out include fuel type, oil type, and spark plug spec.

• Engine brand: Briggs & Stratton
• Engine configuration: single-cylinder
• Engine model: 311707-0132-E1
• Fuel: regular unleaded gasoline (minimum 87 octane)
• Spark plug spec: Champion RC12YC (gap 0.030 in.)

Knowing the exact engine model helps you buy the right maintenance items (spark plug, fuel line components, filters) and follow the correct procedures for storage, starting, and carburetor adjustments.

If you are troubleshooting a fuel smell, leaks, or hard starting, a common wear item to inspect is the fuel cap seal and venting; the compatible cap for this model is the fuel cap assembly 581075501.

Last updated: January 2026

On our Craftsman model 917270671, the engine model number is on the engine identification label or stamping, usually on the blower housing (engine shroud) or nearby engine sheet metal. This tractor uses an electric starter motor for its gasoline engine, so it typically will not have a recoil pull-cord label.

Check these common engine ID locations (clean off grass and oil first):

• On the blower housing or top engine shroud
• On sheet metal near the muffler or muffler guard
• Near the spark plug area on the engine shroud
• Under the top engine cover after removing the retaining screws
• On a valve cover or side cover label (varies by engine manufacturer)

You may find more than one identifier on the engine. Use this as a quick guide:

• Copy the number exactly, including dashes and suffixes
• Take a clear photo before the label wears further
• If the label is missing, look for a stamped number on the blower housing/shroud
• Keep both the engine model and tractor model handy when ordering parts

The tractor model 917270671 identifies the chassis and mower deck configuration, but the engine model number identifies the engine itself. Using the correct engine number helps you match ignition, fuel, and starting components accurately.

For safe steps before removing covers or working near hot exhaust parts, follow the shutdown and safety guidance in the 917270671 owner's manual.

Last updated: January 2026