JLG X20JP - X600AJ Service Manual - Manual (Page 78)

SECTION 3 - CHASSIS & TURNTABLE
3-54 – JLG Lift – 3121623
air flow through the form element and may cause
the engine to smoke at startup.
4. Paper element: Tap the element lightly several times
on a hard surface to remove excess dirt or blow
compressed air lightly 207 kPa (2.1 kgf/cm2, 30 psi)
or less) through the falter from the inside out. Never
try to brush the dirt off; brushing will force dirt into
the fibers.
5. Wipe dirt from the inside of the air cleaner elbow and
all cleaner cover, using a rag. Be careful to prevent
dirt frond entering the air duct that leads to the car-
buretor.
6. Install the foam element to the paper element. Install
the air cleaner elbow packing and air cleaner ale'
mints, and tighten the wing nut securely.
Install the air cleaned cover and tighten the air
cleaned cover nut securely.
OPERATING THE ENGINE WITHOUT THE AIR CLEANER ELEMENT
OR WILT THE ELEMENT INSTALLED LOOSELY WITH ALLOW DIRT
TO ENTER THE ENGINE, CAUSING RAPID ENGINE WEAR. INSTALL
THE AIR CLEANER ELEMENT SECURELY.
SPARK PLUG
Inspection/cleaning:
If the engine has been running, the engine will be very hot
Allow it to coo! before proceeding.
1. Remove the spark plug cap and remove the spark
plug using spark plug wrench.
2. Visually inspect the spark plug. Discard the plug if
the insulator is cracked of chipped.
3. Remove carbon and other deposits with a plus
cleaner or stiff wire brush. Check the sealing washer
for damage.
4. Measure the plug gag with a wire-type feeler gauge.
If the measurement is outside the specification,
adjust by bending the side electrode.
Spark plug BKR7E-E (NGK) K22PR-UR
(DENSO)