YG48Q-5A Maintenance ManualCylinder Head, Cylinder and Piston
58
4.
After properly timing, pull off the tensioner locking
key and coat the mixture of engine oil and
molybdenum disulfide on the tensioner to make it
tensioned; mount the sprocket retaining plate and
retaining bolt
5.
Mount the bolt and washer at the tail end of the
tension
6.
Mount the cylinder head cover (See Installation of
cylinder head cover), and adjust the valve clearance
7.
Connect the phase sensor and mount the eyehole
cover and upper eyehole cover in turn.
Caution
When the tensioner is not tensioned, never turn the
crankshaft for fear of interlocking the teeth while
timi
Camshaft inspection
Check the camshaft for abrasion, damage, oil through
jamming, etc. and check whether the decompressor flying
block can rotate and return smoothly.
Measure the maximum IN / EX lift.
Maintenance limit: IN
≥
5.56mm
, EX
≥
5.32mm
Cylinder head
To remove the cylinder head:
1.
Remove the muffler exhaust pipe
2.
Remove the engine cycle tube
Tensioner
Max. lift measurement
Outside micrometer
muffler exhaust pipe
Summary of Contents for YG48Q-5A
Page 38: ...YG48Q 5AMaintenance ManualFuel system 41 4 Fuel system...
Page 92: ...YG48Q 5AMaintenance ManualFrame and exhaust system 105 10 Frame and exhaust system...
Page 123: ...YG48Q 5A Maintenance ManualIllumination signal system 136 Circuit schematic drawing...
Page 126: ...YG48Q 5A Maintenance ManualIllumination signal system 139...
Page 133: ...YG48Q 5A Maintenance ManualEngine management system 146 Major parts and components...
Page 134: ...YG48Q 5A Maintenance ManualEngine management system 147...
Page 144: ...YG48Q 5A Maintenance ManualElectrical System Diagram 157 19 Electrical System Diagram...