Troubleshooting Guide; Troubleshooting And Correction - Hitachi CG 24EBSP Service Manual

1. Troubleshooting and correction

Problem
Crank shaft does not
Starter grip cannot
turn.
be pulled.
Crank shaft turns.
Dry spark plug
Engine does not
start.
No spark
No compression
Weak sparking
Weak compression
Engine starts but
cannot continue
idling.
Proper sparking and
compression
Engine stops.
Engine starts and
accelerates but ...
Accelerates
improperly. (Engine
does not rev up.)
Engine speed
fluctuates.
Consumes excessive
Engine starts
fuel.
but ...
Cutting attachment
rotates at idling
speed.

TROUBLESHOOTING GUIDE

Seized piston ring
Seized connecting rod bearing
Defective starter
Empty fuel tank
Clogged fuel filter ass'y
Folded or improperly connected or
damaged fuel pipe
Defective air vent valve of
tank cap ass'y
Clogged carburetor ass'y
Defective carburetor ass'y
Stained or defective spark plug
Improperly connected high tension
cable and terminal
Damaged high tension cable
Improper air gap
Defective coil
Defective stop switch
Improperly connected or damaged
internal wires
Defective piston ring
Worn piston
Defective oil seal of crank chamber
Stained or defective spark plug
Improper air gap
Defective coil
Defective piston ring
Defective oil seal of crank chamber
Clogged carburetor ass'y
Defective carburetor ass'y
Clogged fuel filter ass'y
Folded or improperly connected or
damaged fuel pipe
Too low idling speed
Clogged carburetor ass'y
Defective carburetor ass'y
Clogged fuel filter ass'y
Defective carburetor ass'y
Muffler clogged with carbon
Clogged element of air cleaner ass'y
Clogged carburetor ass'y
Defective carburetor ass'y
Defective carburetor ass'y
Clogged element of air cleaner ass'y
Improper idling adjustment
Worn clutch section
Cause
-1-
Action
Disassemble and
replace.
Replenish with fuel.
Clean or replace.
Check or replace.
Replace.
Clean.
Check or replace.
Clean or replace.
Check.
Replace.
Adjust.
Replace.
Replace.
Check or replace.
Replace.
Clean or replace.
Adjust.
Replace.
Replace.
Clean.
Check or replace.
Clean or replace.
Check or replace.
Adjust.
Clean.
Check or replace.
Clean or replace.
Check or replace.
Clean.
Clean.
Clean.
Check or replace.
Check or replace.
Clean.
Adjust.
Replace.