Information from the service manual
C. Piston
1. Mark each piston to aid in reassembly.
2. Place a clean towel or rag into the crank-case to keep circlips and material from falling into the engine.
3. Remove piston pin clips, piston pins, and pistons.
D. Pick-up Coil Assembly
12. Cylinder head and Cam shafts
a. Install the new cylinder head gasket. Install the dowel pins and "O-rings". Locate the cam chain cavity cylinder seal with the tabs down.
b. Install the cylinder head onto the cylinder. Pull the cam chain through the cylinder head as it is installed. Tie the cam chain so that it does not fall into the crankcase.
P. Middle Gear
1. Damper disassembly
NOTE:-------------------------------------------------------
Disassembly of the middle gear damper requires the damper compressor (special tool) and a hydraulic press.
a. Place the middle drive shaft in a press with the damper compressor (special tool) in place as shown.
ENGINE REMOVAL
NOTE: -------------------------------------------------
It is not necessary to remove the engine in order to remove the cylinder head, cylinder, or pistons.
A . Preparation for Removal
ENGINE ASSEMBLY AND ADJUSTMENT
A. Important Information
1. Gasket and seal
All gaskets and seals should be replaced when an engine is overhauled. All gasket surfaces and oil seal lips must be cleaned.
2. Properly oil all mating engine and transmission parts and bearings during reassembly.
3. Circlip
D. Remounting Engine
Refer to page 30 for engine removal. Reverse the applicable removal steps.
|— CAUTION:-------------------------------------------1
Always use new bolts in the drive shaft coupling.
2. Install and tighten the engine mounting bolts.
F. Cylinder
1. Inspect the cylinder walls for scratches. If vertical scratches are evident, the cylinder wall should be rebored or the cylinder should be replaced.
2. Measure cylinder wall wear as shown. If wear is excessive, compression pressure will decrease. Rebore the cylinder wall and replace the piston and piston rings. Cylinder wear should be measured at three depths with a cylinder bore gauge. (See illustration.)
6. Middle gear (installation only, refer to page 67 for the middle gear adjustment)
a. Install the middle drive gear assembly with the proper size of shim(s) and secure it with the bearing retainers and new "TORX" screws.
Tightening torque: 2.5 m-kg (18 ft-lb)
1. Shims
CHAPTER 3. ENGINE OVERHAULING
XJ750XS CIRCUIT DIAGRAM