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John Deere PR-G7500M User Manual

Page 23

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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

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