Hayter Ranger 398C Owner's Handbook Manual page 30

PROBLEM
Engine vibrates excessively.
Uneven cut.
Discharge chute blocks.
Mower is hard to push.
Mower will not self propel.
(Auto drive model only).
Poor grass collection.
1.30
POSSIBLE FAULT
Mounting bolts loose.
Cutterbar bolt loose.
Cutterbar out of balance.
Undulating ground contours.
Cutterbar worn.
Cutterbar out of balance.
Wheels damaged.
Grass is wet.
Cut height too low.
Grassbag full.
No airflow through the grassbag. Clean the grassbag.
Height of cut too low.
Wheels damaged.
Clutch out of adjustment.
Drive belt damaged.
No airflow through the grassbag. Clean the grassbag.
Discharge chute blocked.
Wet grass.
Grassbag full.
REMEDY
Tighten bolts.
Tighten bolt.
Balance cutterbar.
Change direction of travel.
Sharpen the cutterbar.
Balance cutterbar.
Inspect and replace as necessary.
Mow dry grass.
Increase cut height.
Empty grassbag.
Increase height of cut.
Inspect and lubricate or replace
as necessary.
Adjust clutch lever.
Replace drive belt.
Remove blockage.
Mow dry grass.
Empty grassbag.