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Briggs & Stratton 030430 User Manual

Briggs & Stratton 030430
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38 BRIGGSandSTRATTON.COM
Assemble Cylinder Head
1. Install new plastic push rod guides (A, Figure 47) into
the cylinder head plate.
Install Cylinder Head
1. Coat threads of all cylinder head screws with Valve
Guide Lubricant #93963.
2. Using a new head gasket, install cylinder head on
cylinder and start screws by hand. Step-torque screws
in sequence shown in Figures 49, until final torque
value is achieved. Torque screws to value listed in
Engine Specifications
Figure 47
2. Using new plate gasket, install the cylinder head plate.
Torque screws to values listed in Engine Specifications.
3. Lightly coat valve stems with Valve Guide Lubricant
#93963. Then insert valves into cylinder head. Do not
get lubricant on valve face, valve seat, or exposed end
of valve stem.
Figure 48
Figure 49
3. If guides are replaced, or the original guides still meet
specifications, use Finish Reamer #19066 and Reamer
Guide #19191 to ensure proper sizing and to clean out
the guides. Thoroughly clean all reaming debris from
cylinder head.
4. Inspect valves for wear or damage. Replace if
necessary.
NOTE: Valve faces can be resurfaced on a commercially
available valve grinder. However, Briggs & Stratton does not
recommend this practice because the quality of the resurfac-
ing may be insuffi cient. Instead, valve replacement is recom-
mended.
5. Oil the intake valve guide and intake valve stem, then
insert valve into head.
6. Using Valve Lapping Tool #19258 and Lapping
Compound #94150, lap valve and seat together to
assure a good sealing surface. Remove valve, the
repeat procedure for the exhaust valve.
7. Thoroughly clean both valves and cylinder head of all
lapping compound residue.
4. Oil inside diameter of new stem seal/washer and install
on intake valve stem. Slide seal down against head
plate or cylinder head.
5. Support valve side of cylinder head on clean shop rags.
Place valve springs and valve spring retainers over
valve stems. Using thumbs, press against each retainer
until it securely locks into groove in valve stem (A,
Figure 48).

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Briggs & Stratton 030430 Specifications

General IconGeneral
BrandBriggs & Stratton
Model030430
CategoryPortable Generator
LanguageEnglish

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