Inspecting Crankshaft - Briggs & Stratton Vanguard 05000 Manual

Inspecting Compression Release
(050000, 085400, 115400, 117400, 118400,
138400, 185400, 235400, 245400)
When inspe cting the compression release
mechanism, ensure that all parts move freely.
1. Rotate the weight (A) against the spring
and move the decompression pin ([B] Fig.
4) back and forth. Pin should slide easily
through camshaft.
2. The weight should return with spring
pressure.
If weight binds, pivot pin is worn, or spring is
broken:
• Replace complete camshaft assembly.
Inspecting Compression Release
(104700, 161400, 260700, 261700, 28Q700)
Check compression release mechanism ([A] Fig.
5) for wear, nicks, and freedom of movement.
11
210
Fig. 4
Fig. 5
If any discrepancies are found:
• Replace complete camshaft assembly.
Inspecting Valve Tappets (All Models)
Inspect valve tappets for wear on the tappet
surface. Replace if worn or damaged.

Inspecting Crankshaft

Refer to Fig. 6 to check wear points on
crankshaft.
1. Measure the diameters of the PTO journal
(A), crank pin (B) and mag journal (C).
2. Check keyways (D) for wear and
spreading.
3. Check timing gear ([E] Fig. 6) for chipped
or cracked teeth and for wear in the
keyway. Replace crankshaft and gear if
worn or damaged.
Fig. 6
4. Polish crankshaft journals for smooth
lubricating surface. Use crocus cloth until
polish lines are uniform over entire
journal.
Directio n of polish lines must be as show n in ([A]
Fig. 7).
Fig. 7
5. Wash journal with a solvent such as
kerosene to remove residue.