Briggs & Stratton 083100, Manual

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Be sure to note orientation of linkages and springs (A)
before removing.
Top No-Load Speed
Briggs & Stratton supplies engines with an adjustable top
no-load speed, which the equipment manufacturers set to
their own specifications. Do not exceed these limitations.
NOTE: Correct top no-load speed for each model-type-trim
can be found at:
• Dealers — www.thepowerportal.com
• Consumers — Please contact your local Briggs &
Stratton authorized service dealer. Have your complete
model-type-trim number and code number available
when calling.
Top no-load speed should be checked with a tachometer
when the engine is operating on a completely assembled
unit. The equipment should be operated under no-load when
making this check.
If a governor spring must be replaced, consult the
appropriate Illustrated Parts List for the correct part number.
After the spring is installed, check the top no-load speed
with an accurate tachometer, as noted above, and adjust
as required. Refer to
Adjust Top No-Load Speed found in
Section 2.
Disassemble
1. Drain oil from engine. Refer to
Change Oil found in
Section 2.
2. Disconnect spark plug wire from spark plug (A). Secure
spark plug wire away from spark plug.
3. Remove breather (J) and gasket (K) as instructed in
Remove Breather found in Section 6.
4. Remove rocker arms (T) and push rods (V). See
illustration at the beginning of Section 6.
5. Clean crankshaft. Remove burrs if present.
6. Remove crankshaft cover (B) and gasket (C). See
illustration at the beginning of Section 8.
7. Remove camshaft and tappets as instructed in
Remove
Crankshaft and Camshaft found in Section 9.
Inspect
1. Rotate governor crank (C) away from governor gear
assembly (B).
2. Check governor crank for excessive wear or damage;
replace if necessary.
3. Check governor cup (E) for cracks or breaks; replace
if necessary.
4. Check governor gear (D) for chipped or damaged teeth.
NOTE: If the governor gear assembly is damaged, the
engine must be replaced. There are no replacement parts
available.
Assemble
1. Rotate governor crank until paddle contacts cup.
2. Install tappets and camshaft as instructed in Install
Crankshaft and Camshaft found in Section 9.
3. Check mating surfaces of crankcase cover and cylinder
housing for burrs. Remove all burrs and make sure
surfaces are clean.
4. Note: References for this step are found in the
illustration at the beginning of Section 8. Install
crankshaft cover (B) and gasket (C). Make sure cover
slides over locating pins (D) and rests flat against the
cylinder housing.
5. Install and step-torque screws in the sequence shown
(F) to avoid damage to the crankcase cover. Torque
screws to the value listed in
Section 14 - Engine
Specifications.
6. Install push rods and rocker arms as instructed in Install
Cylinder Head found in Section 7.
7. Adjust valve clearance as instructed in Adjust Valve
Clearance found in Section 2.
8. Install rocker cover with a new rocker cover gasket.
Step-torque screws in the sequence shown until final
torque value is achieved. Refer to the illustration at the
beginning of Section 7 for the proper sequence. Torque
screws to value listed in
Section 14 - Engine
Specifications.
9. Install spark plug and spark plug wire.
10. Fill engine with oil. Refer to Change Oil found in Section
2.
11. Adjust governor system as instructed in Governor found
in Section 2.
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