deawater 3pcs 120-5236 Blade Adapter for Toro 30" TimeMaster Lawnmower 20199 20200 20975 22200 and for Exmark ECS180CKA30000 Commercial Walk Behind Mower.

What It Is

This is a set of three aftermarket blade adapters (OEM equivalent to Toro 120-5236) that mount the mower blades to the spindle on Toro 30" TimeMaster walk-behind mowers and select Exmark commercial walk-behind mowers. Designed to replace worn or damaged factory adapters that can cause blade wobble or poor cutting performance.

Fitment & Compatibility

Check your model number – fits Toro TimeMaster models 20199, 20200, 20975, 22200 (30" deck) and Exmark ECS180CKA30000 (30" commercial walk-behind).
Measurements – adapter center hole diameter is 1" (25.4mm) with a 5-point star pattern. The overall adapter diameter is approximately 3.5".
Deck size – only for 30" decks; will not fit 21" or 22" Timemaster or any zero-turn mower.
OEM vs aftermarket – these are aftermarket replacements for Toro part #120-5236. They match OEM specs for hole pattern, thickness, and metal grade but may have slightly different surface finish.
What to verify – remove your existing adapter and compare the star pattern and center hole size. Also check that your blade bolt is 5/16" or 3/8" (these adapters use a 5/16" bolt hole).

Key Things to Know

• Quality – made from hardened steel, not cast aluminum. Expect longer life than OEM plastic or thin metal adapters, but check for burrs on the star points before installation.
• Installation difficulty – easy (15 minutes). Requires removing the blade bolt, swapping the adapter, and torquing the bolt to 80–100 ft-lbs. No special tools beyond a socket wrench and torque wrench.
• Common gotcha – the star pattern must align exactly with the spindle; forcing a misaligned adapter can strip the spindle. If it doesn’t slide on easily, recheck orientation.
• Value – three adapters for $8.90 is cheaper than a single OEM adapter (~$15). Good for replacing all three at once or having spares.

Should You Buy It

Buy this if your Toro TimeMaster or Exmark 30" walk-behind has a worn, cracked, or bent blade adapter causing vibration or uneven cut. It’s a budget-friendly, direct-fit replacement that works as well as OEM for most homeowners and light commercial use. Skip it if you need a perfect OEM match for warranty purposes or if your spindle itself is damaged (separate repair needed).