Scag Power Equipment STT - Manual (Page 41)

Section 7
37
Figure 7-8 Blade Replacement
390S0160
CUTTER
DECK
HEX NUT-TORQUE
TO 75 LB-FT
SPINDLE
SHAFT
SPINDLE
ASSEMBLY
WASHER HEX HEAD BOLT
CUTTER
BLADE
HEX HEAD
BOLT / NUT
CUTTER BLADE
SPACER
3. Secure the cutter blades to prevent them from
rotating, (use the optional Blade Buddy tool, P/N
9212, to assist in securing the cutter blades), remove
the nut from the blade attaching bolt. Remove the
cutter blade, bolt and spacer from the spindle shaft.
(Figure 7-8).
-NOTE-
The front of the machine will have to be raised
slightly to remove the blade bolt from the cutter
spindle.
4. To install the new cutter blade, put the flat washer
onto the blade bolt and slide the bolt into the hole in
the cutter blade.
-NOTE-
Be sure that the blade is installed with the lift
wing pointing toward the top of the deck.
5. Install the spacer onto the blade bolt and insert the
bolt into the cutter spindle shaft.
6. Install the hex nut to the blade bolt at the top of the
cutter spindle. Secure the blades from rotating and
torque to 75 ft-lbs. (See Figure 7-8).
7.10 TIRES
Check the tire pressures after every 8 hours of operation
or daily.
Caster Wheels ......................................... Flat Free
Drive Wheels ......................................... 12 PSI
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
Figure 7-9 Cutter Deck Gearbox
The fluid level in the cutter deck gearbox (Figure 7-9)
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 7-9). 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.
390S0161
CUTTER DECK
GEARBOX
CHECK
PLUG