MULTIQUIP GA-Series Service Manual
  1. Manuals
  2. Brands
  3. MULTIQUIP Manuals
  4. Portable Generator
  5. GA-Series
  6. Service manual

MULTIQUIP GA-Series Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

SERVICE
M
A
M
A
G
G
G
E
G
E
SCHEMATICS ○ TEST PROCEDURES ○ MAINTENANCE SPECS
Updated 10/20/15
N
U
A
N
U
A
A
-
S
A
-
S
N
E
R
N
E
R
L
L
E
R
I
E
R
I
A
T
O
A
T
O
E
S
E
S
R
S
R
S
Manual No. GAGENSM
®

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GA-Series and is the answer not in the manual?

Questions and answers

Related Manuals for MULTIQUIP GA-Series

Summary of Contents for MULTIQUIP GA-Series

  • Page 1 SERVICE ® SCHEMATICS ○ TEST PROCEDURES ○ MAINTENANCE SPECS Updated 10/20/15 Manual No. GAGENSM...

  • Page 2: Proposition 65 Warning

    To reduce your exposure to these chemicals: ALWAYS work in a well ventilated area, and work with approved safety equipment, such as dust mask that are specially designed to filter out microscopic particles. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 3 Basic operating and maintenance procedures are described in the operation and parts manual supplied with the generator. Use the supplied manual to order replacement parts. If you are missing the operation and parts manual, please contact Multiquip Inc to order a replacement or you may visit our website at service.multiquip.com...

  • Page 4: Table Of Contents

    Meg-Ohm-Meter……………………………………………………………………21 ENGINES  Index…..………………………………………………….…………..…………22-37 WIRING SCHEMATICS  GA-2.5HR ……………………………………………………………….….……..38  GA-2.9R ......................39  GA-3.6HR ……………………………………………………………..……...….40  GA-4.5R .......................41  GA-6HR …………………………………………………………………...…..42  GA-6HRS …………………………………………………………………...…..43  GA-6REA …………………………………………………………………..…..44  GA-9.7HEA …………………………………………………………………..…..45 Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 5: Maintenance Specifications

    85-121 PSI Valve Intake: .003" Intake: .006" Clearance (Cold) Exhaust: .005" Exhaust: .008" Air Filters 50hrs. 50hrs. Interstate Interstate Battery 12N24-3A SP30 Generator End Brushless ( No maintenance required ) Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 6: Inspection

    1. Rusted or corroded connections. An oxidized connection will prevent the circuit from being completed. This applies not only to the major cables externally, but also to the electronic control devices internally. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 7 This acid/base wash will remove corrosion, but not oil or grease. Blow dry thoroughly. If you know how to use an ohm meter, check for zero ohms on all connections. Spray the contacts with an electrical insulative spray before reassembling them. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 8 Resistance measurements can be taken and compared to specifications. With the generator isolated from any alternating current source, a volt-ohm meter often pins down the problem without having to take voltage readings internally while the unit is running. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 9: How Ac Voltage Is Produced

    The rotating magnetic field passes through the main windings located in the stator (U1, V1, U2, and V2). These windings provide AC voltage to the receptacles through a circuit breaker. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 10: Troubleshooting

    Engine does not idle down all the way Check solenoid is in correct position and working properly Idle control solenoid Check power connection from lamp coil and rectifier Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 11 “bogs down” Short circuit in a connected Disconnect shorted electrical device when loads are applied. load Check or replace clogged air filter Carburetor inadequate Ensure carburetor jets are not clogged Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 12: Excitation

    Green/White to Green/White - - - - - - - - - - - - 23 Volts (Robin EH-Series) Green/White to Green/White - - - - - - - - - - - - 23 Volts (Robin EX-Series Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 13: Diode Rectifier

    Diode rectifiers are mounted inside the control panel Diode Rectifier Continuity To properly check continuity you must disconnect (un-solder) or isolate the leads connected to the Diode. Check for continuity / no continuity as shown below. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 14: Stator

    A to B - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - .1 Ω (GA-6), (GA-9.7) Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 15: Rotor

    DC voltage producing a rotating magnet. While the rotating magnet field passes through the main windings located in the stator, this produces AC Voltage – 120V AC. GA – Series Rotor Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 16: Current Flow Diagram

    Idle control switch and slowdown module (RC) (see pg. 27) 120 / 240 power switch (see operation and parts manual for specific model) Receptacle Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 17: Rotor Removal Tips

    3 lb. hammer to shock the tapered connection apart. Fig. 3 (B) d) Rock the rotor assembly back and forth, if it moves independently of the crankshaft it can be removed, if not, repeat steps 6, C & D if needed. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 18: Gfci

    One test that should not be performed on GFCI’s is a high load test. The GFCI contains small electronic parts that are damaged if high voltages are applied to them. DO NOT test any GFCI on a HI-POT, dialectic, or Doyle type tester. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 19: Flashing The Field

    If the GA series generator has low or no AC voltage output it is not due to loss of residual magnetism. See the troubleshooting section in this service manual for “low or no voltage”. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 20: Circuit Breakers / Short Circuits

    Dude, why such long wires? Cartoon by: Ehren Stillman Don’t want any short circuits Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 21: Meg-Ohm-Meter

    Equipment with no checks may not only be dangerous to touch with voltage applied but also be subject to total burn out. A failed insulator becomes a partial conductor. For more information on Meg-Ohm-Meters visit our website at www.multiquip.com look at Technical Information bulletins under Meg-Ohm-Meters.

  • Page 22: Index

    The GA-Series generators are powered by four cycle engines and are manufactured by Honda and Subaru. The next few pages are tips and instructions on basic maintenance for the engines used on the GA-Series generators. The following information is to provide the service technician with a base level of knowledge on engine maintenance.
  • Page 23 Do not take the carburetor totally apart until you have the repair kit. You do need to determine if you need a new float, bowl or other parts not included in the repair kit. Most repair kits include a needle valve and all gaskets. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 24 The anti-back-fire solenoids job is to prevent the fuel from being drawn into the cylinder during engine run down. Anti-back-fire solenoids can function in two ways; as a “power to run” or a “power on shutdown”. The Honda engine solenoids used on Multiquip GA series generators operate on a “power to shutdown”.
  • Page 25 Gasket: spot where two part join together.  Spark plug body: metal part of the spark plug.  Hex nut: hexagonal piece of metal used to screw in a spark plug. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 26 This is due to chemical reaction between the nickel alloy electrodes the central electrode will appear chipped and and the lead compounds in petrol. the insulator nose will take on a yellowish brown. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 27 Unplug the connector and take an Ohms Ω reading (engine off) (+) to White (-) …………..11 Ohms Green Black White White (+) to Red (-)…………….. Infinity Green (+ to Black (-)……………. Infinity Black (+) to Green (-)…………….50 Ohms Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 28 Have these checked immediately if you don't know what's causing them. Check for any loose bolts and make sure the governor linkage is not binding. Prevention is better then cure Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 29 Check it out, determine the cause and then make an intelligent decision on whether to replace the unit or have it repaired. Most of all check the oil level often. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 30 If you resolve the three problems above, the engine will run (usually). In most cases, one of these three items will be at fault. So, next time your unit will not start, make a quick check. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 31 If it won't start or runs erratic, it's a trip to the repair shop. So, let's keep that fuel fresh! Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 32 And this is what the jet will look like: So much for the smooth transitions. (REMEMBER EYE PROTECTION) Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 33 Resistance Specification 0.8 – 1.0 Ω the other lead to the iron core. Resistance Specification 5.9 – 7.1 Ω Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 34 (∞) resistance. 3. Inspect the float by dipping the switch into a container of oil. The ohmmeter should go from zero to infinity as the switch is lowered. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 35 NOTE: ohmmeter resistance data for the Robin ignition coil is N/A at time of publishing. Air Gap Adjustment Specification EX & EH series engine….…..…………….. 0.3 ± 0.5 mm (.012 ± .020 in) Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 36 When the oil is at the lower level the float moves down. The permanent magnet is closed to the lead switch, and the lead switch is activated by the magnetic force. Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...
  • Page 37 ’ ’ Honda Engines…………………………………..(678) 339-2600 Website………………………………….……engines.honda.com Robin America…………………………………………..(847) 540-7300 Website…………………………………………www.subarupower.com Multiquip Inc. ◦ GA Series Generators ◦ Manual No. GAGENSM...

  • Page 39: Ga-2.9R

    GA-2.9R — WIRING DIAGRAM Generator/Engine Wiring Diagram PAGE 28 — MQ GA-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #0 (10/28/04)

  • Page 41: Ga-4.5R

    GA-4.5R — WIRING DIAGRAM Generator/Engine Wiring Diagram (GA-4.5R) PAGE 30 — GA-4.5R/GA-4.5RA A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (11/27/06)

  • Page 44: Ga-6Rea

    GA-6REA — WIRING DIAGRAM (GENERATOR) GA-6RE/GA-6REA A.C. GENERATORS — OPERATION & PARTS MANUAL — REV. #0 (06/06/05) — PAGE 33 GA-6REA Generator Wiring Diagram...

  • Page 45: Ga9.7Hea

    GA9.7HEA...

Table of Contents