Honda HRR216VKA K10, Руководство пользователя

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2-30
SERVICE INFORMATION HRR216VKA
10. TROUBLESHOOTING VIBRATION PROBLEMS
CRANKSHAFT RUNOUT INSPECTION
If the mower has excessive vibration, or if blade replacement is required
because of damage caused by an object hitting the blade, inspect the
crankshaft runout.
1. Turn the fuel valve to the OFF position, and tilt the mower on its side
so the carburetor is up.
2. Disconnect the spark plug cap, and remove the spark plug ( P. 3-9 ).
3. Remove the blades, blade holder, and drive pulley ( P. 4-1 ).
4. Attach the dial indicator magnetic base to the lower deck surface.
5. Position the tip of the dial indicator perpendicular and
5-10 mm (0.20-0.39 in) from the end of the crankshaft.
6. Zero the dial indicator.
NOTICE
When checking the crankshaft runout, do not allow the dial indicator
tip to drop into the keyway or the dial indicator tip can be damaged.
7. Use the blade holder bolt and a wrench to rotate the crankshaft.
Record the runout.
8. Replace the crankshaft if runout exceeds the service limit.
Crankshaft
Service limit
0.20 mm (0.008 in)
Yes
Yes
Yes
Tighten blade bolts ( P. 3-4 ).
• Inspect blades ( P. 3-4 ).
• Replace blades ( P. 3-4 ).
• Check crankshaft runout.
( P. 2-30 ).
Tighten the bolts ( P. 5-2 ).
Blades bolts loose.
Blades bent, damaged, or
unbalanced by improper
sharpening.
Engine mounting bolts
loose.
Clean out mower deck.
Check crankshaft runout
( P. 2-30 ).
Mechanical damage, such
as a bent crankshaft.
Grass and debris lodged
under mower deck.
No
No
No
No
Yes
Yes
Check/adjust the engine rpm. Engine speed excessive
No
Yes
5-10 mm
(0.20-0.39 in)
90 °
90 °
DIAL INDICATOR
(Commercially
available)
BLADE HOLDER
BOLT