106-8744-03 Mulching Blade, 42" Deck Lawn Mower Mulching Blades, Compatible with Toro TimeCutter SS4225 SS4200 79214 Zero Turn Mowers, Lawn Mower Cutting Blade Replaces 106-2247-03 110-1857-03, 2 Pack

What It Is

This is a 2-pack of OEM Toro mulching blades designed for 42-inch cutting decks, specifically engineered to finely chop grass clippings and recirculate them into the lawn for natural fertilization. Intended for Toro TimeCutter zero-turn mowers (SS4225, SS4200, 79214) and compatible with other Toro models using the same blade pattern.

Fitment & Compatibility

• Deck size: Only fits 42-inch Toro decks. Measure your deck width before buying—a 42" deck requires blades roughly 21 inches long (center hole to tip).
• Model check: Confirmed for Toro TimeCutter SS4225, SS4200, and 79214. Also fits Toro 74712, 74714, 74716, 74718, and 74720. Verify your exact model number on the deck sticker.
• OEM vs aftermarket: These are genuine Toro blades (part 106-8744-03). Replaces older OEM numbers 106-2247-03 and 110-1857-03. Aftermarket copies may differ in thickness or balance.
• Measurements: Center hole diameter is 1 inch (25.4mm). Blade length is approximately 20.5 inches. Thickness is 0.1875 inches (3/16"). Check these against your current blade before installing.

Key Things to Know

• Installation difficulty: Easy—swap blades one at a time using a socket wrench and blade removal tool or block of wood to prevent rotation. Torque to 70-90 ft-lbs (check your manual).
• Mulching vs bagging: These blades have a curved, serrated design for mulching. They will not perform well for bagging or side-discharge—use dedicated blades for those tasks.
• Balance check: Even OEM blades can be slightly off. After installing, spin the blade by hand—if it wobbles, remove and re-torque or replace. An unbalanced blade causes vibration and bearing wear.
• Sharpening: Mulching blades dull faster than standard blades. Sharpen after every 10-15 hours of use (or when grass tears instead of cuts). Replace if bent or nicked.

Should You Buy It

Buy this if you own a Toro TimeCutter with a 42-inch deck and want genuine OEM mulching blades for a perfect fit and reliable performance. The 2-pack is a good value for the price, especially if you need to replace both blades at once. Skip it if you need bagging or side-discharge blades, or if your deck is not 42 inches.