Generac Power Systems GTV99O Service Manual page 18

SECTION 2: IGNITION
4. Repeatfor second armature.
5. Adjust armature air gap.
ADIUST ARMATUREAR GAP:
1. Rotate fl! rheel until magnet is underamatur€ laminalions.
2. Place thickness 9au9e, .008 " -.012 " (0.20-.30 mm) between
magnet and armature laminaiions, Fgurc 2-3
3. Loosen mounting screw so magnet will pull armature down
against thickness gauge.
a. Torque scrcws to 12.2 Nm (9 Jt. lbs.).
4, Rotate flylvheel to remove thlckness gauge,
5. Repeatfor second armatule-
Note: Route amature grcund wire over breather tube
and away from the flwheel.
Figurc 2-4, Remouing FIWheel Nut
Caution: Flywheel pulle.bolts may damage lighting
coilif turned in too {ar.
cautionr Do NoT strike llywheel with a hard objed
or a m€tal tool as this may Guse flywheelto shat-
ter in operation. Always use approved flyl/vheel
Figure 2"5. Renoving Fl@heel
INSPECT FLYIVHEEL KEY KEWVAYS. FLYIVHEELAND
CRANKSHAFT:
Check flywheel key for damage. Check fly\,vheel{or cracks
or keluay danrage. Also check crankshaft keylvays and taper
for damage, Figure 2-6. Repace crankshaft, if damaged.
A
A
FLYWHEEL
RE[,4OVE
FLY]/VHEEL:
1. Remove fllavheelnut and washer, Figure 2-4.
2. Remove fan retainer and fan.
4. Reinstall flywheel nut. Turn nut down flush with top of
mrea05.
5. Install fllu/heeT puller
6. Tighten puller screws equaly untll fly\,vheel loosens.
Figure 2,5.
Figurc 2-3, Adjusting ai Gap
2-2