Servicing The Spark Plug - Toro Z Master Professional 6000 Series Operator's Manual

Servicing the Spark Plug

Service Interval: Every 100 hours
Make sure the air gap between the center and side
electrodes is correct before installing the spark plug.
Use a spark plug wrench for removing and installing
the spark plug(s) and a gapping tool/feeler gauge to
check and adjust the air gap. Install a new spark
plug(s) if necessary.
Type of Spark Plug: NGK
Air Gap: 0.75 mm (0.030 inch)
Removing the Spark Plugs
Important:
The fasteners on the covers of this
machine are designed to remain on the cover
after removal. Loosen all of the fasteners on
each cover a few turns so that the cover is loose
but still attached, then go back and loosen them
until the cover comes free. This prevents you
from accidentally stripping the bolts free of the
retainers.
1. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
2. Disengage the blade-control switch (PTO), move
the motion-control levers to the N
position, and set the parking brake.
3. Remove the hydraulic-unit shroud and the 2
bolts attached to it
Note:
This gives you access to the front spark
plug.
Figure 55
1. Hydraulic-unit shroud
4. Remove the spark plugs.
® BPR4ES or equivalent
-
EUTRAL LOCK
(Figure 55).
2. Loosen these 2 bolts
5. Install the left-hand hydraulic-unit shroud
55).
Checking the Spark Plug
Important:
Never clean the spark plug(s). Always
replace the spark plug(s) when it has: a black
coating, worn electrodes, an oily film, or cracks.
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the
insulator usually means the air cleaner is dirty.
Set the gap to 0.76 mm (0.030 inches).
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Figure 56
Figure 57
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