Briggs & Stratton Vanguard 430000, User Manual

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3
Figure 18
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 19).
Figure 19
8. Install oil pump gear.
9. Torque screws to values listed in Section 14 -
Engine Specifications. Camshaft gear ( A ,
Figure 20), idler gear ( B ), and oil pump gear
( C ).
Figure 20
10. Install timing gear cover with new gasket.
Note position, length, and number of screws
(Figure 21). Torque screws to values listed in
Section 14 - Engine Specifications.
• M6 x 2.5 in. (M6 x 65 mm): 2 ( A )
• M6 x 2.1 in. (M6 x 55 mm): 3 ( B )
• M6 x 1.1 in. (M6 x 30 mm): 7 ( C )
• M6 Nut: 2 ( D )
Figure 21
11. Install crankshaft pulley with timing mark at
12 o’clock position (No. 1 cylinder) (Figure
22).
NOTE: Ensure alignment pin in crankshaft gear is
seated in hole in pulley.