Briggs & Stratton Vanguard 05000 Manual page 215

9. Measure counterweight bearings and
crankshaft eccentrics and compare to
reject dimensions. See SECTION 14-
ENGINE SPECIFICATIONS.
If counterweight bearings are discolored,
scored or worn beyond tolerances:
• Counterweights must be replaced as a
set.
If the eccentrics are discolored, scored or
worn beyond tolerances:
• Replace the crankshaft
Assembly/Installation Synchro-Balance®
Refer to Fig. 19.
1. Slide magneto side counterweight (F) on
to crankshaft.
2. Place crankshaft and counterweight in a
vise (G). Use soft vise jaws or shop rags
to protect magneto journal.
3. Slip link (E) over do wel pin (D) with
rounded edge of free end (H) u p.
4. Slide PTO side counterweight (C) on to
dowel pin and crankshaft eccentric (I).
11
214
Fig. 18
5. Install screw ([B] Fig. 19). Torque to listed
value.
Fig. 19
NOTE:
Rotate crankshaft to check for binding. If
necessary loosen and re-torque screw. Check
again for freedom of rotation.
6. Install woodruff key and slide timing gear
on to crankshaft with chamfer toward
eccentric.
NOTE:
If necessary, heat gear under a warm
light to expand it before installing.
7. Lay cylinder on its side, cylinder head to
the left.
8. Place crankshaft and counterweight
assembly into cylinder. Using seal
protector, start magneto journal into
magneto bearing.
9. Align link (E) with cylinder link pin ([ J] Fi g.
20). Push assembl y into place.