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 USING CHECKSPARK

1. 

IMPORTANT

 

- For correct CheckSpark operation, always set         

engine-type slide switch to the proper engine type being tested

 Vehicles   

 Small gas engines

2. Connect CHECKSPARK to plug wire of a non-running engine (see Fig. 1)
3.  Push gripper lever forward to open plug wire hook
4.  Place open gripper hook on plug wire and release gripper lever
5.  Red LED will stay lit indicating unit is ready for test
6.  Disconnecting CHECKSPARK from plug wire will reset the internal circuit
7.  CHECKSPARK may also be reset (if a second test is desired) by 

momentarily pressing the reset button without the need to remove the 

tester from the plug wire (see Fig. 2)

 PULL START ENGINES   

1.  Insure engine is ready for starting (see owners manual if necessary)
2.  Firmly pull the recoil starter one time, 

if engine starts turn off engine

3.  Observe LED status on the CHECKSPARK tester (see Fig. 2)

 ELECTRONIC IGNITION ENGINES   

1.  Insure engine is ready for starting (see owners manual if necessary)
2.  Energize electric start only long enough to turn engine over several times, 

if 

engine starts turn off engine

3.  Observe LED status on the CHECKSPARK tester (see Fig. 2)

 CHANGING THE BATTERY

1.  Remove battery cover by pushing in  

on rear tab of battery cover and pulling  

up at same time (see Fig. 3)

2.  Observe polarity when installing 

battery, + terminal is toward the rear of 

the unit (see Fig. 4)

3.  Reinstall battery cover
4. 

Battery check: 

Push gripper 

lever forward, red LED will light 

indicating battery is good and unit is 

operational

Fig. 1

Fig. 2

OK

LOW

Too

Too

HIGH

RESET

Push In

Open

Fig. 3

Engine Ignition Analyzer 

Model CS-2020

User Guide

Flashing GREEN 

(OK)

Solid RED 

(Too LOW)

Flashing RED 

(Too LOW)

Flashing YELLOW 

(Too HIGH)

 

• 

Spark voltage is OK 

• 

Compression is good

• 

No start problem could be: 

Lack of fuel, bad fuel, improper 

choke setting, defective 

carburetor or fuel injector

Flashing GREEN 

(OK)

Solid RED 

(Too LOW)

Flashing RED 

(Too LOW)

Flashing YELLOW 

(Too HIGH)

• 

Spark voltage is too high

• 

Broken spark plug

• 

Internal resistance of plug too 

high (resistor type plug)

• 

Plug wire not properly 

connected/seated on spark plug

• 

Plug wire resistance too high 

(resistor type plug wire)

• 

Broken or open plug wire

• 

Improper spark plug gap

• 

Check slide switch setting - 

CheckSpark may flash yellow 

if slide switch not on correct 

engine type setting

           

Flashing GREEN 

(OK)

Solid RED 

(Too LOW)

Flashing RED 

(Too LOW)

Flashing YELLOW 

(Too HIGH)

• 

No spark detected

• 

Engine kill switch not in run 

position

• 

Defective points  

(mechanical ignition)

• 

Defective trigger switch  

(electronic ignition)

• 

Defective spark coil 

• 

No primary voltage at coil  

(electric start engines)

• 

Open plug wire at coil output

Flashing GREEN 

(OK)

Solid RED 

(Too LOW)

Flashing RED 

(Too LOW)

Flashing YELLOW 

(Too HIGH)

• 

Spark voltage too low 

• 

Flooded engine

• 

Shorted plug

• 

Improper plug gap

• 

Plug wire shorted or arcing to 

chassis

• 

Defective ignition coil

• 

Low compression 

 AFTER ATTEMPTING TO START ENGINE

LED on CHECKSPARK tester will now show condition of the spark (see Fig. 2)

OK – GREEN (flashing)

 

 

Proper voltage, ignition is OK

Too HIGH – YELLOW (flashing)

  High voltage (see chart for possible causes) 

Too LOW – RED (not flashing)

  No voltage (see chart for possible causes)

Too LOW – RED (flashing)

   Low voltage (see chart for possible causes)

 

DIAGNOSTIC CHART

LED STATUS LIGHTS

Gripper lever

Gripper

hook

Engine-type 

slide switch

Engine Selector

CheckSpark Operation 

Read these instructions completely before use

Fig. 4

200 N. Milwaukee Avenue

Suite 215

Libertyville, IL 60048-2250

[email protected]

www.trillww.com

Copyright ©Trillium Worldwide, Inc. 2013

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