Breather - Club Car Carryall 550 2015 Maintenance And Service Manual

22
General Information
A
524
Figure 22-4 Spark Plug
Testing the Spark Plug
Check the sparking ability of a cleaned and properly gapped plug on a sparking comparator if possible. Spark should
be blue and strong and able to jump a 5/16-in. (8 mm) gap.
Setting the Spark Gap
1. Pass a contact point file between the electrodes to produce flat, parallel surfaces to facilitate accurate gauging.
2. Use a wire type gauge. Bend the outside or ground electrode so only a slight drag on the gauge is felt when
passing it between the electrode. Never make an adjustment by bending the center electrode. Set gap (A) from
0.024 to 0.028 in. (0.6 to 0.7 mm) (Figure 22-4, Page 22-6).
Spark Plug Installation
NOTE: Before installing the plug, check the condition of the threads in the cylinder head. Soften deposits in cylinder
head threads with penetrating oil and clean the threads with a tap if necessary.
Use a high temperature, anti-seize lubricant on the threads of the spark plug to reduce friction when installing
a new plug, and reduce "gauling" and thread seizing for future replacements.
Install the spark plug by threading it in until finger tight, then tighten the spark plug to the following torque:
• New: 120 in·lb (13.5 N·m).
• Re-tightening: 216 in·lb (24.5 N·m).

BREATHER

The function of the breather is to create a vacuum in the crankcase which prevents oil from being forced out of the
engine through the piston rings, oil seals or gaskets. The breather has a reed valve which limits the direction of air flow
caused by the piston moving up and down. Air can flow out of the crankcase, but the one-way reed valve blocks return
flow and therefore maintains a vacuum in the crankcase.
Oil laden air in the crankcase passes through the reed valve and expands into the rocker chamber. In the rocker
chamber most oil separates from the air and drains back to the crankcase. The air passes through a tube and
vents to the intake manifold.
Page 22-6 2015 Carryall 550 Maintenance and Service Manual
ENGINE (SUBARU EX40)