Onan BGM Series Service Manual page 27

Flywheel Removal
1. Loosen the flywheel capscrew and back it out
several turns. See Figure 6-4.
2. Attach the puller tool to the flywheel. The tool
has two jack screws that fit into the holes
tapped in the flywheel. Tighten the puller center
screw until the flywheel comes loose. Remove
- the puller, flywheel center screw and washer.
Inspect the flywheel and replace it if any air
vanes are missing.
FLYWHEEL
CAP SCREW
FLYWHEEL
/
FLYWHEEL
PULLER
FIGURE 6-4. FLYWHEEL PULLER
Cooling System Reassembly
Reassembly is the reverse of disassembly.
1. Make sure the woodruff key is in place when
installing the flywheel. Use non-hardening
sealer on the flywheel capscrew threads and
tighten according to Section 4. Torque Specifi-
cations.
2. Make sure the pieces of insulation used to seal
the openings in the inner bulkhead where the
two muffler support brackets and the exhaust
manifold pass through are in place.
3. Make sure the lead to the low oil pressure
switch has been reconnected.
lA
CAUTION
I
Running_the set without the low
oil pressure cutoff switch connected can
lead to serious engine damage in the event
of low oil pressure.
4. Make sure the spark plug cable (oil filter side)
has been rehooked by the clip inside the top
panel to prevent it from interfering with the gov-
ernor rod and causing erratic operation.
lA
CAUTION!
The engine will overheat and can be
damaged if it is operated without all the cooling
system components in place.