Exmark Lazer ZXS Operator's Manual page 23

4.1.3 Clean grass build-up under deck and check mower blades.
Service Interval: Daily
POTENTIAL HAZARD
♦ Raising the mower deck for service or maintenance
relying solely on mechanical or hydraulic jacks could be
dangerous.
WHAT CAN HAPPEN
♦ The mechanical or hydraulic jacks may not be enough
support or may malfunction allowing the unit to fall, which
could cause injury.
HOW TO AVOID THE HAZARD
♦ DO NOT rely solely on mechanical or hydraulic jacks for
support. Use adequate jack stands or equivalent support.
a) Disengage PTO.
b) Stop engine and wait for all moving parts to stop. Remove key or spark plug
wire(s).
c) Raise deck, support properly using safety precautions.
d) Clean out any grass build-up from underside of deck and in deck discharge chute.
e) Inspect blades and sharpen or replace as required.
f) If blade removal is necessary, be careful for the sharp cutting edges of the blades.
g) Re-install the blades (if they were removed) and torque blade bolts to 75-85
ft/lbs (102-115 N-m). Be sure the spring disk washer cone is installed toward
the bolt head (See Figure 5).
h) Remove jack stands (or equivalent support) and lower deck to ground.
4.1.4 Check safety interlock system.
Service Interval:
a) For your safety, your Exmark mower is equipped with Operator Presence
Controls, referred to as (OPC). When either the PTO is engaged, or the
transmission shifter lever is not in neutral and the operator removes both
hands from the handles, the mower engine MUST stop.
b) To determine if the OPC is in operating condition, clear area of bystanders.
Run the engine at one-third throttle, then with the drive levers and neutral lock
latches in the "park brake" position, shift the transmission into gear and
release the OPC levers – the engine MUST stop.
CAUTION
FIGURE 5
BLADE BOLT INSTALLATION
Daily
- 18 -
(102-115 N-m)