Haynes Yamaha Xv V Twins Manual

3B-16 
Chapter 3 Part B Fuel and exhaust systems (XV700-1100 models)

12.2 Fuel pump circuit

1 Fuel pump controller

2 Fuel pump

3 Fuel reserve switch (Res position)

4 Fuel reserve switch (On position)

5 Igniter unit

6 Fuel warning light 
7 Fuel sender (Full position)

8 Fuel sender (Empty position)

9 Engine kill switch

10 Ignition (main key) switch

11 To main fuse and battery

switched on (with the fuel warning light on or off). It should shut off

once the carburetor float chambers are full,...

Chapter 3 Part B Fuel and exhaust systems (XV700-1100 models) 
3B-17

12.27a Fuel pump controller terminal identification

voltage.

a) If its still more than 11 volts, test the fuel pump (see Step 24

below).

b) If its less than 11 volts, go to Step 15.

15 Connect a 0-20 volt voltmeter between the red/green wire at the

fuel pump controller and a good ground/earth connection (bare metal

on the motorcycle).

a) If theres no voltage, test the reserve switch (see Chapter 8).

b) If the reading is 12...

3B-18

Chapter 3 Part B Fuel and exhaust systems (XV700-1100 models)

13.2 Fuel pump hoses (XV1000

and 1100 models)

1 Fuel pump

2 Hose clamps

3 Outlet hose

4 Inlet hose

13 Fuel pump - replacement

Refer to illustrations 13.1 and 13.2

1 Remove the cover from the fuel pump (see illustration).

2 Loosen the fuel line clamps and push the ends of the fuel lines off

the pump fittings (see illustration).

3 Disconnect the pump electrical connector. Remove the mounting

bolts and take the pump out.

4...

Chapter 3 Part B Fuel and exhaust systems (XV700-1100 models)

3B-19

14.5 Unclip the mixture control valve and disconnect its hoses

2 If youre working on a 1984 or 1985 XV700, remove the case

cover (on the left side of the motorcycle between the cylinders).

3 Start the engine and let it idle. Hold a strip of paper next to the

inlet side of the valve.

4 Raise engine speed to 5,000 rpm. The paper should be pulled

toward the valve by air flow. If it isnt, check the vacuum hoses to the

valve (see...

3B-20 
Chapter 3 Part B Fuel and exhaust systems (XV700-1100 models)

15.2c Air induction system hose routing

(1988 and later XV750 models)

1 Face clamp ends inward

2 To fuel tap

3 Face clamp ends downward

4 Place hose bend projection

in square hole

5 Face white paint mark toward

air cut valve

6 Face arrow mark toward air cut

valve

3 To replace system components, remove the left side cover.

Disconnect the hoses, remove the mounting screws and take the

assembly off the motorcycle.

4 To test...

4A-1

Chapter 4 Part A

Ignition system (XV535 models)

Contents

Section

General information 1

Igniter - check, removal and installation 5

Ignition coils - check, removal and installation 3 
Section

Ignition system - check 2

Pick-up coil - check, removal and installation 4

Spark plugs - replacement See Chapter 1

Specifications

Ignition coil

1987 through 1993 US models

Primary resistance 3.8 to 4.6 ohms at 20-degrees C (68-degrees F)

Secondary resistance 10,600 to 16,800 ohms at 20-degrees C...

4A-2 
Chapter 4 Part A Ignition system (XV535 models)

1 General information

This motorcycle is equipped with a battery operated, fully transis-

torized, breakerless ignition system. The system consists of the

following components:

Pick-up coil

Igniter unit

Battery and fuse

Ignition coils

Spark plugs

Ignition (main), engine kill (stop), sidestand and neutral switches

Primary and secondary (HI) circuit wiring

The transistorized ignition system functions on the same principle

as a breaker...

Chapter 4 Part A Ignition system (XV535 models)

4A-3

3.4 To test the coil primary resistance, connect the ohmmeter

leads between the primary terminals in the coil connector 
3.6 To test the coil secondary resistance, connect the ohmmeter

between the spark plug wire (HT) terminal and

one of the primary terminals

checked. Mark the locations of all wires before disconnecting them.

4 To check the coil primary resistance, attach one ohmmeter lead

to one of the primary terminals and the other ohmmeter...

4A-4

Chapter 4 Part A Ignition system (XV535 models)

4.1a The pick-up coil connector on 1987 through 1993 models is

on the underside of the igniter at the rear (arrow);

if necessary, remove the igniter for access

at the igniter (see illustration). On 1994 and later models, follow the

gray and black wires from the igniter to the two-pin connector in the

wiring harness (see illustration). Disconnect the connector. Note: On

1987 through 1993 models, it may be easier to remove the igniter for...

4B-1

Chapter 4 Part B

Ignition system (XV700-1100 models)

Contents

Sect/on

General information 1

Igniter - check, removal and installation 5

Ignition coils - check, removal and installation 3

Ignition system - check 2 
Section

Pick-up coils - check, removal and installation 4

Spark plugs - replacement See Chapter 1

Pressure sensor (1984 and later XV1000 and XV1100 models) -

testing, removal and installation 6

Specifications

Ignition coil

1981 through 1983 models

Primary resistance 2.7...