Special tool
(a): 09916–43211 (valve guide
installer &
remover)
Note
|

| Caution when refinishing or removing the reamer from the valve guide hole, always turn it clockwise. |
Special tool
(b): 09916–33320 (valve guide reamer
(9.8
Mm))
(c): 09916–34542 (reamer handle)

| Caution do not use a burner to heat the valve guide hole to prevent cylinder head distortion. |
| Caution failure to oil the valve guide hole before driving the new guide into place may result in a damaged guide or head. |
Special tool
(a): 09916–43211 (valve guide
installer &
remover)
(d): 09916–53380 (valve guide
installer
attachment)

|

Note
|
Special tool
(c): 09916–34542 (reamer handle)
(e): 09916–33210 (valve guide reamer
(4.5
Mm))

Cylinder head related parts inspection
Valve seat repairCrankshaft thrust clearance inspection and
selection
Refer to “engine bottom side disassembly” (page 1d-
49).
Refer to “engine bottom side assembly” .
Inspection
With the crankshaft’s right-side and left-side thrust
bearings inserted into the upper crankcase.
Measure the thrust clearance “a” between the leftside
thrust bearing and ...
Drive mode selector inspection
Inspect the drive mode selector in the following procedures:
set up the sds tool. (Refer to the sds operation manual for
further details.)
Turn the ignition switch on.
Click “data monitor”.
Make sure each of “driving mode selection” on the monitor is
indicated ...
Inspecting the drive chain
When inspecting the chain, look
for the following:
loose pins
damaged rollers
dry or rusted links
kinked or binding links
excessive wear
improper chain adjustment
If you find anything wrong with the
drive chain condition or adjustment,
correct the pr ...