Generac Power Systems MC - Manual (Page 36)

TEST 26:- VALVES
Remove valves. Clean all parts in
non-flammable solvent. Remove all
carbon. Replace damaged or distor­
ted valves. If valves are useable,
lap them as outlined in engine se­
ction. Check for correct tappet
clearance as outlined in engine
section of manual.
Valve
Roller Spring Retainer
Valve Spring
Valve Spring Retainer
Tappet
TEST 27:- RINGS
Check for broken or worn rings.
Check ring clearance-in piston
grooves and ring gap. Refer to
engine section of manual.
TEST 28:- CYLINDER
Inspect cylinder walls for burning, scoring, or scratching. Check cylin­
der inner diameter. Refer to engine section of manual for inspection
requirements.
TEST 29:- TIMING
The ignition magnet is retained to
the fan with a special adhesive
which is cured at 300°F. for 1 hour
(or 265°F. for 1% hours) after ins­
tallation. The ring gear is heated
and pressed over the fan and magnet
assembly. The entire assembly is
then balanced as a unit, and finall-
y heated and epoxied into place over
the rotor shaft. Any damage to the
Rotor, Fan, Magnet or Ring Gear is
cause for replacement of the entire
assembly.
This Pol« Must Attract Th«
North Soaking Poia Ot A
Magnatic Compass
Magnai Location astabilshas
Timing At 21* BTDC
2.2-14