Troubleshooting Guide - Hitachi CS 33EA Technical Data And Service Manual

Situation
Starter handle The crankshaft does
cannot be pulled. not rotate.
The plug does not
become wet with fuel
after repeated
starting operation.
No spark
Startup is
impossible.
Short-circuited due to foreign matter between
the plug electrodes.
No compression
Weak spark
Idling stops
although startup is
Low compression
possible.
Good spark and
compression
The engine stalls.
Starts, but when
Poor acceleration;
accelerates ...
no increase in
revolutions
Fluctuating
revolutions at high
speed
Starts, but ...
Excessive fuel
consumption
Chain oil is not discharged.

TROUBLESHOOTING GUIDE

Seizure of the piston ring
Seizure of the connecting
rod bearing
No fuel in the tank
Clogged fuel filter
Faulty vent hole (check
valve) on the tank
Dirt clogging the carburetor
Poor throttling and pumping
Dirty or faulty plug
Improperly connected plug
cap
Disconnected or improperly
connected high voltage cord
Ground connection of the
high voltage cord
Disconnected or faulty
ignition coil
Faulty piston ring
Worn piston
Expired service life of the oil
seal
Dirty or faulty plug
Improper air gap
Worn piston ring
Expired service life of the oil
seal
Revolutions too low for idling Adjustment
Clogged fuel filter
Muffler clogged with carbon
Clogged air cleaner
The chain brake is on.
Dirt clogging the high-speed
fuel line
Clogged air cleaner
No oil in the tank
Clogged oil filler port
Clogged oil filler port on the
guide bar
Clogged oil filter
Faulty adjustment of chain
oil discharge amount
Cause
-7-
Measure
Disassembly and parts
replacement
Replenishment
Cleaning or replacement
Replacement
Cleaning
Appropriate starting method
Cleaning or replenishment
Inspection and replacement
Repair or replacement
Repair
Replacement
Removal of foreign matter:
In case of frequent
occurrence, disassemble
and clean the engine.
Parts replacement
Cleaning or replacement
Adjustment
Replacement
Replacement
Cleaning or replacement
Cleaning
Release
Cleaning
Cleaning
Replenishment
Cleaning
Adjustment