Zenith ZPP 416 - Crankshaft

EM -4 ENGINE DOHC
Description
Specification
Limit
Connecting rod
Bend
Twist
Connecting rod big end to crankshaft
side clearance
Connecting rod bearing oil clearance
Undersize
0.05mm (0.0020 in.) or less
0.1mm (0.0039 in.) or less
0.100-0.250mm (0.0039-0.0098 in.)
0.018-0.036mm (0.0007-0.0014 in.)
0.25, 0.50, 0.75mm
(0.010, 0.020, 0.030 in.)
0.4mm (0.0157in.)
Cranksh
aft
Pin O.D.
Journal O
.D.
Bend
Out- of- r
ound, taper of journal and pin
End play
45 mm (1.77 in.)
50 mm (1.97 in.)
0.03 mm (0.0012 in.) or less
0.005 mm (0.0002 in.) or less
0.05- 0.175 mm (0.0019- 0.0068 in.)
Undersize rework dimension of pin
0.25mm (0.010 in.)
0.50mm (0.020 in.)
0.75mm (0.030 in.)
44.725 ~ 44.74mm (1.7608 ~ 1.7614 in.)
44.475 ~ 44.49mm (1.7509 ~ 1.7516 in.)
44.225 ~ 44.24mm (1.7411 ~ 1.7417 in.)
Undersize rework dimension of journal
0.25mm (0.010 in.)
0.50mm (0.020 in.)
0.75mm (0.030 in.)
49.727 ~ 49.742mm (1.9577 ~ 1.9583 in.)
49.477 ~ 49.492mm (1.9479 ~ 1.9485 in.)
49.227 ~ 49.242mm (1.9380 ~ 1.9386 in.)
Flywheel
Runout
0.1mm (0.0039 in.) 0.13mm (0.0051in.)
Oil pump
Clearance between outer circumference
and front case (body clearance)
Front case tip clearance
Side clearance
Inner gear
Outer gear
0.12 ~ 0.18
mm (0.0047 ~ 0.0070 in.)
0.025 ~ 0.0
69mm (0.001 ~ 0.0027 in.)
0.04 ~ 0.08
5mm (0.0016 ~ 0.0033 in.)
0.04 ~ 0.09
mm (0.0016 ~ 0.0035 in.)
Engine oil pressure
Engine at idle [Oil temperature is 90 to
100
C(194to215F)]
147KPa (1.5 kg/ cm², 21.33psi)
Relief spring
Free height
Load
46.6mm (1.8346 in.)
6.1kg at 40.1mm (13.42lb/ 1.578 in.)
Cooling method
Water-cooled, pressurized, forced circulation
with electrical fan
Coolant
Quantity
Radiator
Type
6.5 liter
Pressurized corrugated fin type
Radiator cap
Main valve opening pressure
Vacuum valve opening pressure
81.4 ~ 108 kpa (11.8 ~ 15.6 psi.,0.83
~1.1kg/cm²)
-6.86 kpa (-1.00 psi, -0.07 kg/cm² or less
Coolant pump
Centrifu
gal type impeller
ZENITH POWER PRODUCTS - 416