Yamaha 200A Service Manual download pdf (Page 36)

ELEC

Electrical systems

– +

31

60L3D1X

Fuel control system

8

Checking the fuel injector

1. Remove the intake silencer and discon-

nect the fuel injector coupler.

2. Connect the test harness (2 pins) to the

fuel injector.

NOTE:

Before connecting the test harness to the fuel

injector of cylinder #4, remove the vapor sep-

arator bracket

1

.

3. Install the intake silencer.

CAUTION:

Do not start the engine when the intake

silencer is not installed.

4. Measure the fuel injector output peak

voltage. If out of specification, measure

the fuel injector resistance.

5. Measure the resistance of the fuel injec-

tors. Replace if out of specification.

Digital circuit tester: 90890-03174

Peak voltage adaptor: 90890-03172

Test harness (2 pins): 90890-06861

S60L8010

S60L8020

Fuel injector output peak voltage

(use as reference):

#1 Red/yellow (R/Y) –

Orange/red (O/R)

#2 Red/yellow (R/Y) –

Orange/black (O/B)

#3 Red/yellow (R/Y) –

Orange/yellow (O/Y)

#4 Red/yellow (R/Y) –

Orange/red (O/R)

#5 Red/yellow (R/Y) –

Orange/black (O/B)

#6 Red/yellow (R/Y) –

Orange/yellow (O/Y)

r/min

Loaded

1,500–3,000

DC V 38–40

Digital circuit tester: 90890-03174

Fuel injector resistance

(use as reference):

14.0–15.0

Ω

at 20 °C (68 °F)

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 55 56

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