Toro & Lawn-Boy Mowers With Blade Brake Clutch; Lawn-Boy Insight Mowers - Toro 20330 - Low Wheel Walk Power Mower Service Manual

SELF-PROPEL BELT REPLACEMENT
21" Toro and Lawn-Boy Mowers with Blade
Brake Clutch
Part of the blade clutch must be disassembled to access
the self propel belt. See the BBC section starting on
page 6-1 for more information.
21" Toro Mowers with Blade Override
System and Lawn-Boy Mower with Blade
Clutch System
Part of the BOS or BCS must be removed to replace the
self propel belt. (See page 6-18 for more information.)
The Lawn-Boy Insight has a black access cover just to
the rear of the engine on top of the chassis. Remove it
for easy access to the top of the transmission.

21" Lawn-Boy Insight Mowers

The Zone Start models use a basic self propel system.
See Transmission Remove and Replace, page 3-19,
which also explains the belt replacement process.
WPM Drive Systems Manual 8-3