John Deere PR-G7500M - Manual (Page 23)

Operator’s Manual 23
MAINTENANCE
CLEANING AND GAPPING SPARK PLUG:
If the plug is contaminated with carbon, remove it using a
plug cleaner or wire brush.
Check the spark plug gap and reset it if necessary. The
spark plug gaps are listed below. To change the gap, bend
the side-electrode only, using a spark plug tool. (Fig. 9)
Install and tighten the spark plug. Connect the spark plug
lead.
Recommended Spark Plug:
SPARK ARRESTOR:
If the generator has been running, the muffler will be very
hot. Allow it to cool before proceeding.
NOTE: Remove and clean spark arrester every 100 hours or as neces-
sary.
NOTE: Product users on United States forest service land, and in
some states, must comply with fire prevention regulations.
Clean the spark arrester as follows:
1. Loosen the screw by the exhaust port of the muffler and
remove the spark arrester.
2. Use a brush to remove carbon deposits from the spark
arrester screen. Inspect the screen for breaks or tears and
replace it if necessary.
3. Install the spark arrester in the reverse order of removal.
Spark arrestors are available from your local John Deere
Customer Service. Other user requirements may apply,
check with your Federal, State or local authorities.
SERVICE
Spark Plug Gap
(See recommendations)
(Fig. 9)
Engine Mi-T-M
Spark Plug NGK BPR6ES
Spark Plug Gap 0.7 - 0.8 mm (0.03 in.)
Torque - New 8.7-10.9 ft-lb
Torque - Retighten 16.6-19.5 ft-lb