General Information; Check Gearbox Fluid; Gearbox Seals - Toro Greensmaster Flex 21 Service Manual

General Information

Check Gearbox Fluid

1. Park mower on its traction drum on a level surface.
240 in–lb
Make sure engine is OFF. Remove high tension lead
(276 kg–cm)
from the spark plug.
1
NOTE: The gearbox is not vented. During operation,
the case will develop 2–3 psi of pressure.
2. Remove the check/fill plug with o–ring from the right
side of the gearbox assembly (Fig. 1). The fluid level
2
should come to the bottom of the fill hole.
IMPORTANT: Use only the type of fluid specified.
Other fluid types can cause gearbox damage or per-
formance problems.
Figure 1
3. If fluid level is low, add enough of the proper fluid type
1. Check/fill plug 2. Gearbox assembly
(Dexron III Automatic Transmission Fluid or equivalent)
until fluid level reaches the bottom of the fill hole.
4. Re–install check/fill plug with o–ring and torque plug
to 240 in–lb (276 kg–cm).

Gearbox Seals

The Flex 21 uses cannister seals in the gearbox. This
type of seal is internally lubricated and, like other seals,
could normally have a light lubricant film evident at the
seal lips. Cannister seals will also cause a slightly higher
amount of drag than other seal types.
Greensmaster Flex 21 Page 4 – 3 Traction and Reel Drive System (Rev. C)