Honda GX240RT2 Service And Repair Manual page 163

CRANKCASE
PISTON SKIRT O.D.
Measure and record the piston O.D. at a point 10 mm
(0.4 in) from the bottom of the skirt and 90 degrees to
the piston pin bore.
If the measurement is less than the service limit,
replace the piston
Inspect the cylinder sleeve I. D. with this inspection
(page 13-13).
GX240/GX270
STANDARD:
SERVICE LIMIT:
GX340/GX390
STANDARD:
SERVICE LIMIT:
If the measurement is less than the service limit,
replace the piston
Inspect the cylinder sleeve I. D. with this inspection
(page 13-13).
PISTON-TO-CYLINDER CLEARANCE
Subtract the piston skirt O.D. from the cylinder sleeve
I.D. to obtain the piston-to-cylinder clearance.
STANDARD:
SERVICE LIMIT:
If the calculated clearance is more than the service
limit, replace the piston
clearance.
If the clearance is still more than the service limit with
the new piston, replace the cylinder barrel
PISTON PIN BORE I.D.
Measure and record the piston pin bore I.D. of the
piston.
GX240/GX270
STANDARD:
SERVICE LIMIT:
GX340/GX390
STANDARD:
SERVICE LIMIT:
If the measurement is less than the service limit,
replace the piston
Inspect the piston pin O. D. with this inspection
(page 13-15).
gx240ut2_gx270ut2_gx340ut2_gx390ut2
(page 13-5).
76.975 – 76.985 mm
(3.0305 – 3.0309 in)
76.85 mm (3.026 in)
87.975 – 87.985 mm
(3.4636 – 3.4640 in)
87.85 mm (3.459 in)
(page 13-5).
0.015 – 0.042 mm
(0.0006 – 0.0016 in)
0.12 mm (0.005 in)
(page 13-12) and recheck the
(page
18.002 – 18.008 mm
(0.7087 – 0.7090 in)
18.042 mm (0.7103 in)
20.002 – 20.008 mm
(0.7875 – 0.7877 in)
20.042 mm (0.7891 in)
(page 13-12).
13-5).
90°
10 mm
(0.4 in)