MANIFOLDS AND ELBOWS
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999
Page 7B-3
7. Remove exhaust manifold fasteners. Remove manifold assembly and discard gaskets.
75749
a
b
c
d
e
a -
Exhaust Elbow
b -
Restrictor Gasket
c -
Open Gasket (Later Models)
d -
Exhaust Manifold
e -
Bolts
Cleaning
1. Clean gasket material from all surfaces and wash parts in solvent.
2. Check water passages for foreign material. Passages must be clean for efficient cooling.
Inspection
1. If more thorough inspection is desired, pipe plugs may be removed from exhaust man-
ifold and exhaust elbow.
IMPORTANT: If plugs are removed, coat threads with Quicksilver Perfect Seal before
reinstalling.
2. Check for cracks.
3. To test manifold body for leaks, block-off plates, plugs, or short hoses with plugged ends
must be used. One block-off plate must have a threaded hole for attaching compressed
air hose. Use new gaskets when installing block-off plate(s). Apply 40 PSI (276 kPa) of
air pressure and submerge manifold in water. Air bubbles will indicate a leak.
4. Inspect all parts carefully. Machined surfaces must be clean and free of all marks and
deep scratches, or water and exhaust leaks may result.
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