JLG X23J - X700AJ Service Manual - Manual (Page 160)

SECTION 3 - CHASSIS & TURNTABLE
3121448 – JLG Lift – 3-133
A LOOSE SPARK PLUG CAN BECOME VERY HOT AND CAN DAM-
AGE THE ENGINE. OVER TIGHTENING CAN DAMAGE THE
THREADS IN THE CYLINDER BLOCK. INSTALL THE SPARK PLUG
CAP SECURELY.
SPARK ARRESTER CLEANING
THE ENGINE AND THE MUFFLER BECOMES VERY HOT DURING
OPERATION AND REMAINS HOT FOR A WHILE AFTER STOPPING
THE ENGINE. BE CAREFUL NOT TO TOUCH THE MUFFLER WHILE
IT IS HOT. ALLOW IT TO COOL BEFORE PROCEEDING.
SOLID PROTECTOR TYPE
Remove the muffler cover (page 12-6), If equipped.
Remove the 5 x 8 mm tapping screws (1), 6 x 10 mm tap-
ping screw (2), and muffler protector (3).
Remove the 5 x 8 mm tapping screws (4) and spark
arrester (5).
CLEANING
BE CAREFUL TO AVOID DAMAGING THE SCREEN.
Clean the carbon deposits from the spark arrester screen
(1) with a wire brush (2).Check the spark arrester screen
for damage. If the screen is damaged, replace the spark
arrester.Install the spark arrester in the reverse order of
removal.
IDLE SPEED CHECK/ADJUSTMENT
Start the engine and allow it to warm up to normal operat-
ing temperature.Turn the throttle stop screw (1) to obtain
the specified idle speed.
IDLE SPEED:1,400 ± 150 min-1 (rpm)
(4)
(2)
(1)
(5)
(3)
(1)
(2)
(1)