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PH3300i SM, Rev. 2017-01-20
2.5 Engine Serial Number and Bar Code Number
The generator bar code number (BCN) and the engine serial number (ESN) identify your particular
unit and are necessary when ordering parts and accessories. These two numbers are used by your
dealer and Keystone Automotive Operations for warranty administration and must be supplied before
any work can be done.
The BCN is found in three locations:
1. On the side of the generator, lower left of the oil access door.
2. On
the back of the Owner’s Manual.
3. On the outside of the shipping carton.
The engine serial number can be found stamped on the engine block above the oil dipstick. It is
visible when the engine oil access cover is removed (Fig. 1).
2.6 Engine Maintenance Specifications
Part
Item
Specification
Service limit
Engine
Maximum speed without load
3600±100rpm
—
Cylinder
Sleeve I.D.
77.000-77.020mm
(3.0315”-3.0323”)
77.105mm
(3.0356”)
Piston
Skirt O.D.
76.960-76.980mm
(3.0299”-3.0307”)
76.85mm
(3.0256”)
Pin bore I.D.
18.002-18.008mm
(0.7087”-0.07090”)
18.05mm
(0.7106”)
Piston pin
O.D.
17.994-17.000mm
(0.7084”-0.7087”)
17.95mm
(0.7067”)
Piston ring
1st ring
Height
1.97-1.99mm
(0.0776”-0.0783”)
1.87mm
(0.0736”)
Ring side clearance
0.02-0.06mm
(
0.001”-0.002”)
0.15mm
(0.006”)
Ring end clearance
0.15-0.25mm
(0.006”-0.010”)
1.0mm
(0.040
”)
Width
3.4-3.6mm
(0.134”-0.142”)
3.2mm
(0.126”)
Fig. 1
