42" Lawn Mower Spindle Assembly Craftsman LT1000 LT2000 LT4000 Compatible with AYP 130794 532130794 + 2 Spindle Pulleys 153535 173436 129861

What It Is

This is a 42-inch lawn mower spindle assembly kit, designed for Craftsman LT1000, LT2000, and LT4000 series tractors (and compatible with AYP models). It includes two spindle pulleys (part numbers 153535, 173436, 129861) and replaces the original AYP/MTD spindle assembly (OEM# 130794 / 532130794). Use it to mount and drive the mower deck blades on 42-inch cutting decks.

Fitment & Compatibility

• Deck size: Only fits 42-inch (107 cm) cutting decks. Measure your deck width before buying—this won’t work on 46-inch or 54-inch decks.
• Model series: Compatible with Craftsman LT1000, LT2000, LT4000, and many AYP/MTD-built tractors (e.g., Husqvarna, Poulan, Murray). Check your mower’s model number (under seat or on frame) against the OEM part 130794.
• OEM vs aftermarket: This is a direct aftermarket replacement for OEM part 130794 / 532130794. It should bolt up to existing deck brackets and blade spindles, but verify spindle shaft diameter (commonly 5/8 inch) and pulley belt groove width match your deck.
• What to measure: Spindle bolt pattern (typically 3-bolt, 4-inch spacing), pulley diameter (usually 4.5 inches), and shaft length. If your current spindle uses a different pulley offset, you may need to adjust belt tension.

Key Things to Know

• Build quality: Aftermarket spindles often use sealed bearings (vs. greasable OEM). Expect decent durability for residential use, but commercial-duty decks may need OEM bearings.
• Installation difficulty: Moderate—requires removing the deck, unbolting the old spindle (3-4 bolts), and transferring the pulley. Have a socket wrench, penetrating oil for rusted bolts, and a torque wrench (tighten to ~30-40 ft-lbs).
• Pulley compatibility: The included pulleys (153535, 173436, 129861) may not match all deck belt routing. Compare pulley diameter and groove depth to your original—if off, belt slip or premature wear can occur.
• Common gotcha: Some decks use a spindle with a different shaft taper or bearing stack height. If the new spindle doesn’t sit flush, your blade may wobble or hit the deck. Test spin before full assembly.

Should You Buy It

Yes, if you have a 42-inch Craftsman LT1000/2000/4000 (or AYP clone) with a failed spindle and want a budget-friendly, high-rated replacement. It’s ideal for DIY homeowners—not for heavy commercial use. Skip it if your deck uses a non-standard spindle bolt pattern or you need greasable bearings for frequent, heavy mowing.