Cutting Height Adjustment (Fixed Decks); Adjusting Caster Wheels (Fixed Decks); Adjusting Blade On Cutter Spindle (Fixed Decks) - Snapper SPLH152KW, SPLH172KW, SPA361, SPA481, SPA521, SPA611 Safety Instructions & Operator's Manual

SECTION 3 - OPERATING INSTRUCTIONS
3.9 CUTTING HEIGHT ADJUSTMENT
(Fixed Decks)
The Mower has three methods of adjusting cutting
height listed as follows:
1. Moving position of BLADE on cutter spindle shaft.
2. Moving position of CASTER WHEEL on support.
3. Moving position of MOWER DECK on power unit.
WARNING
DO NOT attempt any maintenance, adjustments or
service with the engine running. Stop engine. Stop
blades. Latch Traction Controls in neutral. Move
Speed Control lever to SLOW. Remove key.
Disconnect spark plug wires from spark plugs and
secure wires away from spark plugs. Engine and
components are HOT. Avoid serious burns, allow
all parts to cool before working on machine.
3.10 ADJUSTING CASTER WHEELS
The Caster Wheel Assembly has four (4) 1/2" and one
(1) 1/4" thick spacer. The 1/4" thick spacer always
stays on the stop side of the caster support tube. The
1/2" thick spacers are used to adjust the cutting height.
When placed above or below Caster Support Tube,
they raise or lower cutting height in 1/2" increments,
thus providing a "Quick-Adjust" method. The deck
mounting has to be changed to correspond to the
caster repositioning. Refer to Section "ADJUSTING
FIXED DECK ATTACHMENT".
1. Remove the Retainer Pin from Caster Shaft. See
Figure 3.11.
CASTER SHAFT
FIGURE 3.11
2. Lift Caster Support Tube while adding or removing
the bottom Spacer. See Figure 3.12.
NOTE: Remove (or add) Spacers by rotating slots so
they align with the flat area on Caster Shaft.
3.11 ADJUSTING
To change cutting height of Blades, move the Spacers from
under the Cutter Housing to above the Cutter Housing Pulley.
Each Spacer moved above the Cutter Housing Pulley will
provide an additional 1/4" of cutting height. DO NOT PUT
ANY SPACERS BELOW BLADE! See Figure 3.13.
CASTER
SUPPORT
TUBE
NOTE: Changing the cutting height of Blades DOES
NOT change the Deck ground clearance. If an
undesirable cutting pattern results, then cutting height
adjustment MUST be made by adjusting Mower Deck
height and Caster Wheels.
Install Blades (Air-Lift UP) with retaining hardware as
shown below and tighten to 70-80 ft. lbs.
See Figure 3.14.
RETAINER
PIN
CASTER WHEEL
ASSEMBLY
16
NOTE! THOSE SPACERS
REMOVED FROM BOTTOM
OF CASTER SHOULD BE
REINSTALLED AT TOP
BEFORE INSERTING
FLAT
RETAINER PIN.
AREA
FIGURE 3.12
BLADE
SPINDLE
CUTTER
HOUSING
PULLEY
SPACERS ON
BOTTOM
FIGURE 3.13
HEIGHT
ADJUSTING
SPACERS
MOUNTING
BOLT
FIGURE 3.14
SLOT
SPACERS
ON CUTTER
SPACERS ON
TOP
CUTTER
HOUSING
BLADE
AIR LIFT
BLADE
BEVELED
WASHER
TIGHTEN TO 70-80
FOOT POUNDS