Briggs & Stratton Vanguard 430000, User Manual

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15
2
Disassemble Rocker Arm Shaft
Remove snap rings ( A , Figure 22) from ends of
rocker arm shaft ( B ). Remove set screw ( C ) from
center rocker arm support ( D ). Disassemble rocker
arm assembly. Note position of rocker arms ( E ),
thrust washers ( F ) and springs ( G ).
Figure 22
1. Check rotor arms and shaft (Figure 23).
Figure 23
2. Check rocker arm bearing. Replace if greater
than 0.395 in. (10.03 mm).
3. Check rocker arm shaft. Replace if less than
0.392 in. (9.957 mm).
4. Check rocker arm studs for stripped threads
and replace if required.