CARBURETOR/FUEL PUMP
90-826883R2 JUNE 1998
Page 3A-23
Primer System
The primer system provides extra fuel to the outboard whenever the primer knob is pulled
out. The primer system components should be inspected carefully for serviceability. The
diaphragm and gaskets should be inspected for cuts or abrasions. Replace accordingly.
The primer check ball and springs should be inspected for debris or varnish which restrict
free movement.
SYMPTOMS OF A DEFECTIVE PRIMER SYSTEM
1. Outboard is hard to start.
a. Diaphragm is cut.
b. Primer check ball is stuck in the closed position.
c. Primer passage is plugged with debris or varnish.
2. Outboard smokes excessively at idle.
a. Primer check ball is not seated due to debris, varnish or damaged check ball
spring.
a
b
c
d
e
g
f
h
i
j
k
a -
Seal
b -
Screw (4) [Torque to 14 lb. in. (1.6 N·m)]
c -
Cover
d -
Diaphragm
e -
Gasket
f -
Spring
g -
Primer Bowl
h -
Check Ball
i -
Spring
j -
Gasket
k -
Plug