Briggs & Stratton Vanguard 430000 User Manual page 144

Figure 14
NOTE: It may be necessary to rotate oil pump drive
to engage oil pump rotors.
NOTE: Position camshaft retainer so that the center
hole does not interfere with the camshaft.
3. Note position, length, and number of screws
(Figure 15).
• M6 x 1.1 in. (M6 x 28 mm): 4 (A)
• M6 x 0.7 in. (M6 x 18 mm): 3 (B)
• M6 x 0.6 in. (M6 x 16 mm): 1 (C)
4. Torque screws to values listed in Section 14 -
Engine Specifications.
5. Make sure crankshaft key is at the 12 o'clock
position (A, Figure 15).
Figure 15
6. Assemble idler gear shaft with arrow up (B,
Figure 16).
Figure 16
Engine models 430000 and 580000 built after date
code 990111007 are equipped with right angle
helical timing gears. Timing marks are identified by
letters (A, AA, B, BB, etc.), instead of numbers. The
timing procedure is the same.
7. With crankshaft key at the12 o'clock position,
assemble idler gear so that timing mark 11
(AA) is aligned with timing mark 1 (A) on
crankshaft gear, timing mark 22 (BB) is
aligned with timing mark 2 (B) on camshaft
gear (Figure 17).
Figure 17
8. Install oil pump gear.
9. Torque screws to values listed in Section 14 -
Engine Specifications. Camshaft gear (A,
Figure 18), idler gear (B), and oil pump gear
(C).
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