Joyner JNSZ1600QL, Owner'S Manual

Page: 37 / 215

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12.Hydraulic lifting rod
：
： ：
：
The surface contacting cam is
quenched. The contact face with rocker
arm is made of low carbon steel. Surface carbonitriding
，
Both contact face are circular-arc.
13.Intake valve seat
： ： ： ：
It is made of alloy cast iron.
14.Exhaust valve seat
： ： ： ：
Iron base powder metallurgy. Quench treatment.
15.Valve guide
： ： ： ：
It is made from alloy cast iron.
16.Valve
： ： ： ：
Intake valve
：
Made from 4Cr9Si2. With smaller end of conical surface
quenched
，
With conical surface angle 45
°
. With large nest seat in the valve head for hemispherical
combustion chamber. Exhaust valve
：
4Cr9Si2-21-4N. With conical surface angle 45
°
. With smaller end
quenched.
17.Gear
： ： ： ：
Made from iron base powder metallurgy.
18.Timing belt
： ： ： ：
Made from cyaniding butadiene-acrylonitrile rubber.
19.Intake manifold
：
： ：
：
Made from Aluminum alloy. With mixture warm upped by water jacket. Electric
heated intake manifold is optional.
20.Exhaust manifold
： ： ： ：
Made from ductalloy or black cast iron.
21.Oil pan
： ： ： ：
Stamping
，
Low carbon steel. Oil pool is in the front of cylinder block.
22.Oil pump
： ： ： ：
Rotor type. Case is made of aluminum alloy. Speed ratio 1
∶
1
，
With pressure relief valve in
oil pump.
23.Engine oil filter
：
： ：
：
Full flows type spinning filter. With by-pass valve in it.
24.Fuel pump
： ： ： ：
Diaphragm type. Driven by upper camshaft eccentric cam. Electric fuel pump for electric
control engine. In fuel tank.
25.Push rod
：
： ：
：
Made from low alloy steel
，
Carbonization & quench treatment. Only applied for carburetor
engine.
26.Water pump
： ： ： ：
Centrifugal type
，
Cast iron impeller
，
Aluminum alloy case
，
Driven by timing belt through
gear. Speed ratio 1.053
∶
1.
27.Thermosister
： ： ： ：
Wax type.
28.Thermosister seat
：
： ：
：
Aluminum alloy
，
With overflow valve
，
overflow pipe and