Generac Power Systems TXP - Manual (Page 72)

CHECK PISTON
If the piston is not to be replaced
or cylinder is not to be re-sized,
piston should be checked. Clean car­
bon from top ring groove. Install a
NEW ring in the groove. If a 0.007
inch (or larger) feeler gauge can
be inserted in the space above the
ring, piston is worn and should be
replaced.
CHECK RINGS
Clean all carbon from rings and from
cylinder bore. Install old rings down
into the cylinder bore, one at a time,
one inch into the bore. Check ring gap
with feeler gauge. If gap’is greater
than shown in CHART below, replace the
ring.
COMPRESSION
RING OIL RING,
6.035 . 1 0.045
NEW PISTON RING
CHECK CONNECTING ROD
Replace rod if crankpin bearing is scored or worn. DO NOT ATTEMPT TO
FILE OR FIT THE ROD. The following CHART shows rejection sizes of crank-
pin bearing and piston bearing holes.
CRANKPIN
BEARING
PISTON PIN
BEARING
1.252. 0.802
CHECK PISTON PIN
Replace the piston pin if it is more than 0,0005 inch out-of-round.
1 0 . 2
Issued 3-78