Toro Owners Manual - Enlarge page 1 
From inside (document excerpt):
Lawn Mower User Manual Free Download. Walk Behind Mowers Specs. Power Mower Free Specification Instruction Manual Download PDF.
REENSMASTER FLEX 21 COMPONENTS 04021 Traction Unit Greensmaster Flex 21 (incl. 11 Blade C/U & Wiehle Roller: 200 spacing) OPTIONAL ACCESSORIES 04204 04200 04058 04123 04119 107-9036 107-9037 107-9038 107-9039 105-5325 105-5350 93-4262 108-4303 93-4263 99-4299 93-4264 105-5333 105-2400 94-9101 94-9010 107-8101 105-9636 106-4699 106-4661 106-4662 106-4663 106-4664 107-8125 108-4333 105-9900 Groomer for Flex 21 Cutting Units for Flex 21 Light Kit Wheel Kit Push Broom Brush Rear Full Roller Front Wiehle Roller (.200 spacing) Front Wiehle Roller (.920 spacing) Front Full Roller Clip Kit (.14 ” or .21 “) Hour Meter Kit (standard) Bedknife – Micro Cut (standard on 04021) Bedknife – Extended Micro Cut Bedknife – Tournament Bedknife – Extended Tournament Bedknife – Low Cut Operator Presence/CE Kit 8 Blade Reel Spark Arrestor Height of Cut Bar Groomer Quickup Kit (04204) Groomer Rotating Brush Kit (04201) High HOC Kit (.200 – .750 inch) Wiehle Roller Scraper (.20 gap) Wiehle Roller Scraper (.92 gap) Full Roller Scraper Scraper Brush Groomer Rotating Brush Kit (04204) Roller Extension TransPro 100/Flex 21 Adapter Kit (Required to modify 2001 production Flex 21 to fit on TransPro 100) …