John Deere AC-G7510H User Manual

Operator’s Manual  

27

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.

Clean the spark arrester as follows: (Fig. 10 and 11)

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.

 

   

Spark Plug Gap

(See recommendations)

SPARK ARRESTER SCREEN

SPARK ASSESTER

SCREW

(Fig. 9)

(Fig. 11)

(Fig. 10)

Engine

Subaru

Honda

Spark Plug

NGK BR-6HS 

  NGK BPR6ES

Spark Plug Gap

0.6 - 0.7 mm 

(0.02-0.03 in.)

0.7 - 0.8 mm 

(0.03 in.)

Torque - New

8.7-10.9 ft-lb

Torque - Retighten

16.6-19.5 ft-lb