Engine Adjustments & Repair; Mower Deck & Component Adjustments; Blade Brake Adjustment; Blade Belt Adjustment - Snapper LT160H42IBV Safety Instructions & Operator's Manual

Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blades running. STOP
blades. STOP engine. Set brake. Remove key.
Remove spark plug wire from spark plug and secure
wire away from spark plug. Engine and components
can be extremely hot. Avoid burns by allowing engine
and components sufficient time to cool.
ADJUSTING
NUT (3)
4.1 ENGINE ADJUSTMENTS & REPAIR
Refer to the engine owner's manual for those
adjustments and/or repairs that can be made by the
owner.
4.2 MOWER DECK & COMPONENT ADJUSTMENTS
The following mower deck and component adjustments
and repairs can be made by the owner. However, if there
is difficulty in achieving these adjustments and repairs, it
is recommended that these repairs be made by an
authorized SNAPPER dealer.
I Blades must stop rotating in 5 seconds or less after I
blades have been turned off. DO NOT operate I
machine until blade brake has been repaired and I
functioning properly. Contact your SNAPPER dealer I
for assistance. I
4.2.1. BLADE BRAKE ADJUSTMENT
This SNAPPER Lawn Tractor is equipped with an
electric clutch/brake that should stop blade rotation in
5 seconds or less after being turned off. If blades
continue to rotate longer than 5 seconds, adjustment
or replacement is required. When properly adjusted, a
.012" to .014" feeler gauge will fit thru the three
inspection slots located on the side of the clutch as
shown. See Figure 4.1. Excessive clearance can
adversely affect the function of the clutch and produce
blade stop times over 5 seconds. To adjust, turn the
three adjusting nuts clockwise to reduce clearance.
The clearance at each of the three slots must be set
the same.
4.2.2. BLADE BELT ADJUSTMENT
The 42" and 48" mower deck drive belts do not
require any adjustment. If the belt does not drive
blade properly, replace belt as needed.
4.2.3. MOWER DECK ADJUSTMENT (LEVELNESS)
1. SIDE-To-SIDE (42" Decks)
Before making deck leveling adjustments, check the
tire pressure. Check tires and add or release air as
needed to bring pressure to 12 PSI in front and 12
PSI in rear tires. If tires are properly inflated and
mowing is still uneven, adjust side-to-side deck
levelness as follows:
FIGURE 4.1
.012" TO .014"
I
• FEELER GAUGE I
I
a. Place machine on a smooth level surface.
b. Turn engine off and remove key, remove spark
plug wire(s) from spark plug(s) and secure wire(s)
away from plug(s).
c. Place a piece of angle iron, pipe, or similar
object under center of deck at the rear.
d. Disconnect rear sector plates and allow center,
rear of deck to rest on angle iron.
e. Measure the distance from blade tips to floor. If
the measurement is within 1/8" from side-to-side, the
deck levelness is satisfactory. If the difference from
side-to-side is greater than 1/8", an adjustment will
have to be made. See Figure 4.2.
REAR TO FRONT VIEW OF DECK
ANGLE IRON
FIGURE 4.2
f. Loosen the shoulder bolt that retains the
eccentric.
g. Turn eccentric "UP" or "DOWN" as required
until blade tips are within 1/8" of the same
distance from the floor. See Figure 4.3.
h. Tighten shoulder bolt loosened in Step "f".
i. Readjust rear sector plates to align with holes
in support brackets.
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