HOW TO USE THIS MANUAL
Besides describing the service maintenance tasks and the intervals at which they are to be performed,
two basic levels of service are presented in this manual: engine top end service and engine bottom end
service. The manner in which these instructions are used depends upon the tasks to be performed and
the level of disassembly required.
Remove External Assemblies
To prepare the engine for service, whether top or bottom end, first see
SECTION 4 - REMOVE
EXTERNAL ASSEMBLIES
to remove the air cleaner, fuel tank, carburetor, etc. The order in which the
topics are presented is the order in which the assemblies are most easily removed from the engine.
NOTE:
A few exceptions to this rule do exist, such as the muffler and rewind starter, which may be
serviced without having to remove other external assemblies.
Top End Service
If servicing only cylinder head components, see
SECTION 5 - DISASSEMBLE ENGINE, TOP END
DISASSEMBLY,
and then proceed to
SECTION 6 - SERVICE ENGINE SUBASSEMBLIES, CYLINDER
HEAD.
When cylinder head service is complete, see
SECTION 7 - ASSEMBLE ENGINE, TOP END
ASSEMBLY.
Bottom End Service
If servicing bottom end components, such as the piston, connecting rod, crankshaft, etc., first
see
SECTION 5 - DISASSEMBLE ENGINE, TOP END DISASSEMBLY,
and then proceed to
BOTTOM
END DISASSEMBLY
in the same section. When finished, move to
SECTION 6 - SERVICE ENGINE
SUBASSEMBLIES,
and see
PISTON AND CONNECTING ROD; FLYWHEEL, CRANKSHAFT AND
CAMSHAFT;
and
CRANKCASE AND CRANKCASE COVER,
for all service instructions. When bottom
end service is complete, see
SECTION 7 - ASSEMBLE ENGINE, BOTTOM END ASSEMBLY,
and then
proceed to
TOP END ASSEMBLY
in the same section.
Install External Assemblies
When the top and bottom ends of the engine are assembled, see
SECTION 8 - INSTALL EXTERNAL
ASSEMBLIES
to complete the project. The order in which the topics are presented is the order in which
the assemblies are most easily installed on the engine. These instructions also include any cleaning,
inspection, or adjustments that may be recommended.
Not for
Reproduction
Summary of Contents for Vanguard 10V300
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