Keep your Craftsman 247.377050 lawn mower performing reliably through every mowing season with genuine OEM replacement parts from Repair Clinic. The 247.377050 is a Craftsman push mower in the 247-series walk-behind line, using a single-cylinder four-stroke engine and a direct-drive cutting deck. The closely related Craftsman 247.377051 shares the same platform and most service components with the 247.377050. Parts most frequently replaced include the carburetor, cutting blade, air filter, and spark plug. Use the 247.377050 parts list and diagram to identify your component, then browse the complete Craftsman lawn mower parts catalog.
Craftsman 247.377050 Walk-Behind Platform: Engine, Deck, and 247.377051 Cross-Reference
The Craftsman 247.377050 uses a single-cylinder four-stroke engine that requires 10W-30 engine oil; unlike two-stroke equipment, this engine uses separate engine oil and does not accept mixed fuel. The carburetor on the 247.377050 is a float-bowl type; ethanol-blend fuel deposits varnish in the float bowl and needle seat during off-season storage, making post-storage starting failure the most common 247.377050 service scenario. The 247.377050 parts diagram on the listing page organizes components by assembly section including engine, deck, height adjustment, and recoil starter. The Craftsman 247.377051 is a closely related model in the same 247-series platform; most components including the cutting blade, air filter, spark plug, and carburetor are interchangeable between the 247.377050 and 247.377051. The Craftsman mower model 247 designation refers to the full 247-series product family. The 247.377050 manual documents the correct oil specification and the blade removal torque specification. For diagnostic guidance, visit the Craftsman lawn mower repair help section.
247.377050 Repair Priorities and Diagnostic Sequences
Craftsman 247.377050 Carburetor Varnish and Post-Storage Starting Failure
The 247.377050 carburetor is the primary diagnostic target for any mower that fails to start after winter storage. Ethanol-blend fuel deposits varnish in the float bowl and main jet passages over the off-season, blocking fuel delivery to the engine. A mower that cranks but does not fire, or that starts briefly and then stalls as the choke opens, has carburetor varnish in the majority of post-storage cases. Drain the fuel bowl before storage each winter. If the mower already has a varnish problem, clean the carburetor with solvent and compressed air; replace it when the needle valve seat is worn to the point where adjustment does not restore stable idle. Browse Craftsman lawn mower carburetor parts.
247.377050 Blade Replacement and Deck Safety
The 247.377050 cutting blade must be replaced when it has been bent from a hard impact with a rock or root; a bent blade creates imbalance that vibrates the engine crankshaft and deck spindle bearing at every rotation. Never attempt to straighten a bent mower blade; a straightened blade has internal stress fractures that are not visible and can fail catastrophically during operation. Replace the blade when it can no longer be sharpened to a clean cutting edge or when any bend is visible. Confirm the blade mounting torque from the 247.377050 manual before reinstalling. Browse Craftsman lawn mower blade parts.
247.377050 Air Filter and Spark Plug Annual Service
The 247.377050 air filter should be replaced at the start of each mowing season and inspected every 25 hours during the season; a clogged filter causes the engine to run rich, lose power, and foul the spark plug. The spark plug should be replaced annually; a plug with black carbon deposits after a short service interval indicates a rich mixture from a clogged filter or varnished carburetor. Address the root cause before installing a new plug.
247.377050 Recoil Starter Assembly and Pull Cord Service
The recoil starter assembly on the 247.377050 houses the pull cord, recoil spring, and starter pulley. A pull cord that does not retract after release has a broken or unwound recoil spring; a cord that breaks near the handle requires full assembly replacement on most Craftsman 247-series mowers. The 247.377050 parts list includes the full recoil starter assembly as well as individual components where available.
Craftsman 247.377050 Parts at Repair Clinic
- Genuine Craftsman OEM Parts for the 247-Series Platform: Every 247.377050 part meets Craftsman original equipment specifications. Browse the full Craftsman lawn mower parts catalog.
- 247.377050 and 247.377051 Cross-Reference: Our listings identify components shared between the 247.377050 and 247.377051 and those requiring individual model confirmation.
- Four-Stroke Engine Service Guidance: Our diagnostic content clarifies that the 247.377050 uses a separate engine oil rather than mixed fuel, preventing the most common maintenance error on this platform.
- 365-Day Returns and Fast Shipping: All 247.377050 parts ship promptly. The Craftsman lawn mower repair help section provides step-by-step guidance for carburetor, blade, and starter service.
Craftsman 247.377050 Lawn Mower Parts FAQ
What is the Craftsman 247.377050 and what engine does it use?
The Craftsman 247.377050 is a push walk-behind lawn mower in Craftsman’s 247-series product line, using a single-cylinder four-stroke engine. As a four-stroke engine it uses separate engine oil; it does not accept mixed fuel. The engine oil specification is 10W-30 SAE; confirm the specific grade and capacity from the 247.377050 manual before adding oil.
Are Craftsman 247.377050 and 247.377051 parts interchangeable?
Most components are interchangeable between the 247.377050 and 247.377051 within the same 247-series platform including the cutting blade, air filter, spark plug, and carburetor. Always confirm the part number from the Craftsman mower parts diagram before ordering, as minor specification differences between closely related 247-series models may affect specific components.
Why does my Craftsman 247.377050 start and then immediately die?
A 247.377050 that starts briefly and then stalls as the choke opens typically has carburetor varnish blocking the main jet passage, which restricts fuel delivery at running speed. The choke circuit can deliver enough fuel to fire on the rich choke setting, but the main circuit is too restricted to sustain operation without choke. Clean or replace the 247.377050 carburetor and confirm the fuel lines and in-tank filter are in good condition at the same service.
What blade torque specification does the Craftsman 247.377050 use?
The blade mounting bolt torque specification is documented in the 247.377050 manual; always confirm from the manual for your specific engine variant before tightening. Under-torqued blades can come loose during operation; over-torqued bolts can damage the crankshaft threads. Use a torque wrench rather than estimating tightness for blade installation.
