Ezgo EXPRESS L4 Technician's Repair And Service Manual page 102

ENGINE
Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
B
If cylinder compression is lower than 9 kgf/cm
check the following:
1. Gas leakage around the cylinder head - replace the
damaged head gasket and check the cylinder head for
warp.
2. Condition of the valve seating.
3. Valve clearance.
4. Piston/cylinder wear, piston seizure.
5. Piston ring, piston ring groove.
Rocker Cover Removal
Tool List
Ratchet ........................................................................ 1
Extension 6" ................................................................ 1
Socket, 10 mm ............................................................ 1
1. Remove the four bolts (5) securing the rocker cover.
2. Remove the rocker cover (2) and the gasket.
Fig. 19 Rocker Cover
Valve Clearance Inspection
Tool List
Allen Bit, 3 mm ............................................................ 1
Ratchet ........................................................................ 1
Extension 6" ................................................................ 1
Feeler Gauge .............................................................. 1
Wrench, 14 mm ........................................................... 1
Torque Wrench, in. lbs................................................. 1
Valve clearance must be checked when the engine is
cold (at room temperature).
With the rocker cover removed, Place the piston at TDC
of the compression stroke turning the crankshaft in its
rotational direction.
Page G-8
2
6
5
NOTICE
Repair and Service Manual
(128 psi), Then check the valve clearance with a feeler gauge (7),
measure the valve clearance between the rocker arm (8)
and the valve stem end.
Valve Clearance (when cold): Inlet, Exhaust 0.10 - 0.15
mm (0.004 - 0.006 in.)
7
8
Qty.
If the valve clearance is incorrect, adjust it.
Valve Clearance Adjustment
Turn the crankshaft to the proper direction until the pis-
ton is at TDC of the compression stroke.
Qty.
Fig. 21 Valve Clearance Adjustment
Valve Clearance (when cold): Inlet, Exhaust 0.10 - 0.15
mm (0.004 - 0.006 in.)
Loosen the lock screw (10) using the 3 mm Allen bit and
the adjusting nut (11). Insert the feeler gauge (7)
between the rocker arm and the valve stem end and
move the adjusting nut (11) until the feeler gauge begins
to bind between the rocker arm and the valve stem end.
Hold the adjusting nut (11) in place using a wrench and
tighten the lock screw (10) to the specified torque.
ITEM
10
Fig. 20 Measure Valve Clearance
TORQUE SPECIFICATION
61 in. lbs (6.9 Nm)
7
10
11