Scag Power Equipment STT-31BSG - Manual (Page 37)

32
Section 7
The cutter deck gearbox can reach high
operating temperatures. Allow the cutter deck
gearbox to cool before servicing.
CAUTION:
7.11 CUTTER DECK GEARBOX
A. Checking Lubricant Level
The fluid level in the cutter deck gearbox (Figure 7-12)
should be checked after every 100 hours of operation or
bi-weekly, whichever occurs first.
1. Lower the cutter deck to to its lowest position to
gain access to the cutter deck gearbox.
2. Clean and remove the check plug from the side of the
gearbox (See Figure 7-12). Visually check that the
lubricant level is up to the bottom edge of the check
plug hole. If lubricant is low, add SAE 80W90
lubricant through the check plug hole in the gearbox
until it is level with the bottom of the check plug
hole. Install the check plug and tighten securely.
B. Changing Lubricant
The lubricant in the cutter deck gearbox should be
changed after every 500 hours of operation or yearly,
whichever occurs first.
1. Place a suitable container beneath the cutter deck
gearbox and locate the gearbox drain plug.
Figure 7-12 Cutter Deck Gearbox
2. Remove the drain plug and drain the lubricant into
the container and properly discard it.
3. Re-install the drain plug and add EP-80/90 lubricant
through the check plug hole in the gearbox until it is
level with the bottom of the check plug hole. Install
the check plug and tighten securely.
390S0161
CUTTER DECK
GEARBOX
CHECK
PLUG
7.12 COOLING SYSTEM
A. Checking Coolant Level
The coolant level should be checked before each day of
operation.
1. Remove the radiator cap by turning it slowly
counterclockwise to the first stop and allow any
pressure to be released. Push down on the cap and
turn counterclockwise to remove.
2. Visually check the coolant level. The coolant level
should be up to the bottom of the filler neck as shown
in figure 7-13. Add a mixture of coolant and soft
water as needed.
-NOTE-
Refer to the coolant manuafacturer's instruc-
tions for the proper coolant mixture ratio.
WARNING:
To avoid burns, always allow the engine to
cool before removing the radiator cap.
Fill to Bottom of
Filler Neck
030467-13
Figure 7-13 Coolant Level in Radiator