John Deere GT2554 - Manual (Page 31)

Service Engine - 27
SERVICE ENGINE
M88594
4. Inspect foam precleaner (B) and element (C) without
removing.
5. If precleaner (B) is dirty, carefully remove from filter,
leaving element (C) in air cleaner housing.
NOTE: Do not wash paper element.
6. Wash precleaner (B) in a solution of warm water and
liquid detergent.
7. Rinse precleaner thoroughly. Squeeze out excess water
in a dry cloth until precleaner is completely dry.
8. Put approximately 30 ml. (1 oz.) of clean engine oil onto
precleaner. Squeeze precleaner to distribute oil evenly.
Squeeze out excess oil with a clean cloth.
9. Remove and replace filter element (C) only if damaged
or very dirty.
10.Carefully remove element (C) from air cleaner housing.
Replace with a new element.
11.Carefully clean air cleaner housing. Prevent any dirt
from falling into carburetor.
12.Install precleaner onto new filter element and install into
air cleaner housing.
13.Install cover. Lower hood.
Checking Spark Plugs
1. Stop engine. Remove key. Lift hood.
MX13511
2. Disconnect spark plug wires (A), one on each side, and
remove spark plugs.
3. Clean spark plugs carefully with a wire brush.
M33906
4. Check plug gap with a wire feeler gauge.
• Gap should be 0.76 mm (0.030 in.)
5. To change gap, move outer electrode.
6. Install and tighten spark plug(s).
• Tighten plug(s) to: 24.4/29.8 N•m (18/22 lb-ft).
7. Connect spark plug wires.
8. Lower hood.
IMPORTANT: Avoid damage! A damaged paper
element (C) can allow dirt into carburetor and can
cause poor engine performance, engine damage or
failure:
• Do not attempt to clean paper element by tapping
against another object.
• Replace element only if very dirty.
• Do not use pressurized air to clean element.
• If element is damaged or seal is cracked, replace.
B
C
c
CAUTION: Avoid injury! Before removing spark
plugs, Stop engine and wait until engine is
cool.
A