62245A 062245-A
Generac Generator Engine Service Manual
with
Parts Reference Numbers
62245A 2.6L Liter Gas Spark Ignited Inline four cylinder 062245A G2
Generac 2.6L GAS ENGINE 062245A 62245A
1. 62245-A ENGINE, 2.6 LITER GAS ENGINE, 2. 52233 CONNECTOR, OIL PRESSURE
3. 696-62245A SENDER, OIL PRESSURE SENDER
4. 650-62245A SWITCH, OIL PRESSURE SWITCH
5. 63204 ADAPTER, EXHAUST, 6. 63417 INTAKE MANIFOLD
341-62245A GASKET, INTAKE MANIFOLD GASKET
7. 62575 GASKET, THERMOSTAT HOUSING GASKET,
8. 340-62245A THERMOSTAT
9. 342-62245 UPPER THERMOSTAT HOUSING
10. 22129 LOCK WASHER
11. 42107 BOLT
12. 655-62245A SWITCH, TEMPERATURE SWITCH, 13. 657-62245A SENDER, TEMPERATURE SENDER,
14. 656-62245A SENSOR, COOLANT LEVEL SENSOR,
15. 39450 FITTING
16. 64063 SUPPORT
17. 64061 GOVERNOR
18. 411-62245A FAN, ENGINE COOLING FAN,
19. 62976 RADIATOR, ( not shown )
20. 62963 BOLT
21. 46526 WASHER
22. 22145 WASHER
23. 57642 BOLT
24. 22131 WASHER
25. 52859 NUT
26. 64069 DASH POT
27. 31596 NUT
28. 64064 SUPPORT
29. 64067 BRACKET
30. 410-62245A SPACER, FAN SPACER, 31. 47725 SPACER
32. 22097 WASHER
33. 36409 NUT
34. 64416 BOLT
35. 42914 BOLT
36. 34339 FITTING
37. 57058 BOLT
40. 57772 GASKET, OIL DRAIN
41. 57765 ADAPTER, OIL DRAIN
42. 57822 CLAMP
43. 57448 HOSE
44. 52858 NUT
45. 39287 BOLT
46. 63273 EXHAUST GASKET
47. 63275 SEAL RING, EXHAUST,
48. 46525 NUT
49. 39253 BOLT
50. 555-62245A NUT
51. 42574 ADAPTER, OIL PRESSURE,
52. 63463 FITTING
53. 40107 HOSE, ELBOW
54. 35472 CLAMP
55. 31919 PLUG
56. 50967 HOSE, COOLANT BYPASS HOSE,
57. 61696 BOLT
58. 49821 BOLT
59. 35467 NIPPLE
60. 25066 COUPLING, PIPE
61. 40080 V-BELT FOR GOVERNOR
62 22500-T SPACER
Generac 2.6L GAS ENGINE 062245A 62245A COOLANT HOSES
17. 64574 UPPER COOLANT HOSE, TO RADIATOR
18. 62973 UPPER COOLANT HOSE, TO THERMOSTAT HOUSING
42. 64567 TUBE, UPPER COOLANT HOSE CONNECTOR,
44. 55512 LOWER COOLANT HOSE, WATER PUMP TO RADIATOR,
Engine parts contact:
Email: EngineParts@HeavyEquipmentRestorationParts.com
Alternate email: engineparts2@gmail.com
Generac 2.6L GAS ENGINE 062245A 62245A LP GAS INLET SYSTEM
1. 51358 REGULATOR
2. 24310 PLUG
3. 57822 CLAMP
4. 34339 FITTING
5. 50967 COOLANT HOSE
6. 50967 COOLANT HOSE
7. 49120 FITTING ELBOW
8. 47527 FITTING STRAIGHT
9. BLANK
10. 49198 SOLENOID, FUEL SHUTOFF SOLENOID
11. 61325 LP GAS LINE
12. 49966 LP GAS LINE
13. 51107 CARBURETOR
14. 55472 CONNECTOR
15. 49663 CONNECTOR
16. 51597 CAP PLUG
17. 22129 WASHER
18. 45757 BOLT
19. 22473 WASHER
20. 49813 NUT
21. 42911 BOLT
22. 51145 BALL JOINT
23. 57191 ROD, CONTROL ROD
24. 36409 NUT
25. 22097 WASHER
26. 40105-B CONNECTOR, AIR INLET
27. 42561 CLAMP
28. 63224 PIPE, AIR INLET
29. 63225 AIR INLET ELBOW CONNECTOR
30. 64415 SUPPORT, AIR CLEANER, AIR FILTER,
31. 680-62245A ASSEMBLY, AIR CLEANER, AIR FILTER, 682-62245A ELEMENT FOR AIR CLEANER, AIR FILTER,
32. 62781 BAND
33. 30332 BOLT
34. 22259 NUT
35. 22127 NUT
36. 22413 BOLT
37. 22131 WASHER
38. BLANK
39. 44117 FITTING
40. 57146-C GAS HOSE, REGULATOR TO CARBURETOR
41. 53395 BOLT
42. 64049 SPACER
43. 49721 BOLT
44. 47411 BOLT
Generac 2.6L GAS
1. 64088 MIXER
ENGINE 062245A 62245A TURBOCHARGER INLET SYSTEM
2. 64089 GASKET, AIR INLET
3. 64548 CONNECTOR FLANGE
4. 64090 SCREW
5. 40105-A CONNECTOR RUBBER AIR INLET PIPE
6. 42561 CLAMP
7. 35685 CLAMP
8. 26915 FITTING
9. 43768-A SOLENOID, GAS SHUTOFF
10. 51109 REGULATOR
11. 59412 FITTING
12. 56460 FITTING
13. 57823 CLAMP
14. 62781 BAND, MOUNTING
15. 680-62245A ASSEMBLY, AIR CLEANER, AIR FILTER, 682-62245A ELEMENT FOR AIR CLEANER, AIR FILTER,
16. 59193-A GAS HOSE, GAS SHUTOFF SOLENOID TO MIXER
17. 30332 BOLT
18. 49814 BOLT
19. 46526 WASHER
20. 64547 SUPPORT
21. 22129 WASHER
22. 22259 NUT
23. 63589 TUBE, AIR INTAKE TO TURBOCHARGER
24. 64085 CONNECTOR RUBBER, TURBOCHARGER TO AIR INLET PIPE
25. 677-62245A CONNECTOR HOSE, VALVE COVER TO AIR INTAKE TUBE
Engine parts contact:
Email: EngineParts@HeavyEquipmentRestorationParts.com
Alternate email: engineparts2@gmail.com
Generac 2.6L GAS ENGINE 062245A 62245A NATURAL GAS INLET SYSTEM
1. 51109 REGULATOR
2. 62986 SUPPORT
3. 63226 SUPPPORT
4. BLANK
5. 43768-A SOLENOID, GAS SHUTOFF
6. 26915 FITTING
7. 59412 FITTING
8. 59193-A GAS HOSE
9. 57823 CLAMP
10. 59193-B GAS HOSE
11. 40841 FITTING
12. 44118 FITTING
13. 51107 CARBURETOR
17. 22129 WASHER
19. 42911 BOLT
20. 46526 WASHER
21. 22131 WASHER
22. 51145 BALL JOINT
23. 63222 CONTROL ROD
24. 36409 NUT
25. 22097 WASHER
26. 40105-B AIR INTAKE HOSE CONNECTOR
27. 42561 CLAMP
28. 63224 PIPE, AIR INLET
29. 63225 AIR INLET ELBOW CONNECTOR
30. 64415 SUPPORT
31. 680-62245A ASSEMBLY, AIR CLEANER, AIR FILTER, 682-62245A ELEMENT FOR AIR CLEANER, AIR FILTER,
32. 62781 BAND
33.30332 BOLT
34. 22259 NUT
35. 58443 SCREW
36. 22413 BOLT
37. 22473 WASHER
38. 49814 BOLT
39. 46526 WASHER
40. 57309 THROTTLE ARM
Engine parts contact: Email: EngineParts@HeavyEquipmentRestorationParts.com Alternate email: engineparts2@gmail.com
Generac 2.6L GAS ENGINE 062245A 62245A EXHAUST
1.59937 MUFFLER
2.60366 STRAP
3.59933 ELBOW, EXHAUST TO MUFFLER
4.59939 RAIN CAP
5.59109 FITTING, EXHAUST, 6.30339 BOLT
7.22129 WASHER
8.22259 NUT
9.58943-B EXHAUST PIPE 58943B STAINLESS STEEL
10.58943-C EXHAUST PIPE 58943C STAINLESS STEEL
Engine parts contact:
Email: EngineParts@HeavyEquipmentRestorationParts.com
Alternate email: engineparts2@gmail.com
Generac 2.6L GAS ENGINE 062245A 62245A Gaskets
1. 404-62245A GASKET SET, ENGINE OVERHAUL
2. 189-62245A SEAL, ROCKER COVER NUTS,
3. 237-62245A VALVE STEM SEALS, EXHAUST,
4. 405-62245A GASKET, EXHAUST MANIFOLD GASKET
5. 237-62245A VALVE STEM SEALS, INTAKE,
6. 375-62245A GASKET, FUEL PUMP PLATE,
7. 341-62245A GASKET, INTAKE MANIFOLD GASKET,
8. 186-62245A HEAD GASKET, CYLINDER HEAD GASKET,
9. 152-62245A GASKET, RIGHT CHAIN CASE,
10. 290-62245A WATER PUMP GASKET,
11. 198-62245A ROCKER COVER GASKET, VALVE COVER GASKET,
12. 62575 THERMOSTAT GASKET
13. 113-62245A GASKET, REAR OIL SEAL RETAINER GASKET
14. 112-62245A REAR CRANKSHAFT OIL SEAL
15. 131-62245A OIL PAN GASKET
16. 158-62245A FRONT CRANKSHAFT OIL SEAL
17. 161-62245A GASKET, LEFT CHAIN CASE,
18. 283-62245A OIL PUMP GASKET
19. 266-62245A OIL PICKUP TUBE GASKET
20. 130-62245A GASKET, OIL DRAIN PLUG GASKET,
Engine parts contact:
Email: EngineParts@HeavyEquipmentRestorationParts.com
Alternate email: engineparts2@gmail.com
FOREWORD
This SERVICE MANUAL has been prepared especially for the purpose of familiarizing service mechanics with the repair of the 2.6 liter gas engine. Every efort has been made to ensure that the information contained herein is accurate and cui:rent. However, the manufacturer reserves the right to change, alter, or otherwise improve the product without prior notice.
TABLE OF CONTENTS
PART!= ENGINE PROPER
Section 1. l. - ADJUS'I'ING VALVE CLEARANCE
1.1.l - Tighten Cylinder Head Bolts
1.1.2 - Adjust Valve Clearances
Section 1. 2 - CYLINDER HEAD
1.2.l - Cylinder Head Structure
1,2.?. - Intake Manifold
1,2.3 - Camshaft
1.2.4 - cylinder
1.2.5 - Cylinder
1.2.6 - Cylinder
1.2.7 - Cylinder
1.2.8 - Cylinder
Section 1.3 - CYLINDER
1.3.1 - Cylinder
1.3.2 - Cylinder
1.3.3 - Cylinder
1.3.4 - Cylinder.
Section 1.4 CYLINDER
1.4.1. - General
Head Removal
Head Disassembly
Head Inspection
Head Reassembly
Head Installation BLOCK
Block Structu.r.e
Block Block Block BLOCK
1.4.2 - Inspection Dis.assembly Inspection Reassembly VEN'rir,ATION
PART 2 - LUBRICATION SYSTEM
Section 2,1 - GENERAL
2.1.1 - Recommended Engine Oils
2.1.2 - Changing Engine Oil
Section 2.2 - OIL FILTER
2.2.l - General
2.2.2 - Removal and Installation
Section 2.3 - OIL PUMP
2.3.l - General
2.3.2 - Removal and Installation
2.3.4 - Oil Pump Disassembly
2.3.5 - Oil Pump Inspection
2.3.6 - Oil Pump Reassembly
Section 2.4 - OIL PRESSURE SWITCH
2.4.l - General
2.4.2 - Testing the Oil Pressure Switch
2.4.3 - Operational Test of Oil Pressure Switch
PART 3 - ENGINE COOLING SYSTEM
Section 3.1 - GENERAL
3,1,1 - General Description
3.1.2 - Recommended Coolant
3.1.3 - Checking Coolant Level
3.1.4 - Fan Belt
Section 3.2 - ENGINE COOLANT PUMP
3.2.l - Description
3.2.2 - Coolant Pump Removal
3.2.3 - Pump Inspection
3.2.4 - Pump Installation
PART!= ENGINE CRANKING AND CHARGING SYSTEM
Section 4,1 - STARTER
4.1.l - Starter construction
4.1.2 - Inspection/Maintenance Before Disassembly
4,1.3 - Checking Battery State of Charge
4.1.4 - Checking Battery Condition
4.1.5 - Starter No-Load Test
Section 4. 2 - STARTER REMOVAL, DISASSEMBLY, INSPEC'rION AND TES'.rING
4.2.l - Removal
4.2.2 - Disassembly
4,2.3 - Inspection
4.2.4 - Starter Reassembly
4.2.5 - starter Installation
Section 4. 3 - ENGINE DC AL1'E:RNATOR
4.3.1 - Construction
4.3.2 - Removal
4.3.3 - Checking the Diodes Prior to Disassembly
4.3.4 - DC Alternator Disassembly
4.3.5 - Alternator Inspection After Disassembly
4.3.6 - Alternator Assembly
4.3.7 - DC Alternator Performance Test
4.3.8 - Installation
PAR! 1 - ENGINE FUEL SYSTEMS
section 5.1 - INTRODUCTION TO FUEL SYSTEMS
5.1,l - Fuel System Installation Standards
5.1.2 - Types of Fuel Systems
5.1.3 - Natural Gas Fuel Systems
5.1.4 - LP gas Fuel Systems
5,1.5 - Gasoline Fuel System
Section 5,2 - NATURAL GAS FUEL SYSTEM
5.2.1 - Natural Gas Fuel system Components
5.2,2 - Primacy (Line Service) Regulator
5.2.3 - Fuel Shutoff Solenoid
5.2.4 - Pressure Reducing Valve
5,2.5 - Carburetor
5.2,6 - Turbocharged Natural Gas System
Section 5.3 - LP GAS FUE:L SYSTEM
5.3.1 - Components
5.3.2 - Fuel Lockof.f Solenoid
Generac Engine 062245A 62245A Specifications ADJUSTING VALVE CLEARANCE
1.1.1- TIGHTEN CYLINDER HEAD BOLTS ( see head bolt tightening sequence below )
Always tighten the cylinder head bolts prior to adjusting the valve clearances. Tighten cylinder head bolts in the sequence show in the figure below to the following torque values.
Cylinder Head Bolt Tightening Specification Cold head bolts 65 to 72 Ft Lbs Warm head bolts 72 to 80 Ft Lbs
1.Warm up engine until coolant temperature reaches 176 to 194 degrees Fahrenheit
2.At top dead center on compression stroke of each cylinder ( firing order 1-3-4-2), loosen the rocker arm nut and adjust valves to the specified clearance with adjusting screw and feeler gauge. When proper clearance is obtained, prevent the adjusting screw from turning and tighten the rocker arm lock nut.
Valve clearance specifications:
Intake valve clearance, engine warm, 0.006 Inch
Exhaust valve clearance, engine warm, 0.010 Inch
Contact for engine parts for generators:
Heavy Equipment Restoration Parts LLC
4730 118th Ave
Fennville Michigan 49408 USA
Phone: 269 673 1638
Text: 269 760 8652
Fax: 269 673 7226
Website: www.HeavyEquipmentRestorationParts.com email: EngineParts@HeavyEquipmentRestorationParts.com alternate email: EngineParts2@gmail.com
62245A 062245-A
62245A 2.6L Liter Gas Spark Ignited Inline four cylinder 062245A G2
Generac 2.6L GAS ENGINE 062245A 62245A Gaskets
1. 404-62245A GASKET SET, ENGINE OVERHAUL
2. 189-62245A SEAL, ROCKER COVER NUTS,
3. 237-62245A VALVE STEM SEALS, EXHAUST,
4. 405-62245A GASKET, EXHAUST MANIFOLD GASKET
5. 237-62245A VALVE STEM SEALS, INTAKE,
6. 375-62245A GASKET, FUEL PUMP PLATE,
7. 341-62245A GASKET, INTAKE MANIFOLD GASKET,
8. 186-62245A HEAD GASKET, CYLINDER HEAD GASKET,
9. 152-62245A GASKET, RIGHT CHAIN CASE,
10. 290-62245A WATER PUMP GASKET,
11. 198-62245A ROCKER COVER GASKET, VALVE COVER GASKET,
12. 62575 THERMOSTAT GASKET
13. 113-62245A GASKET, REAR OIL SEAL RETAINER GASKET
14. 112-62245A REAR CRANKSHAFT OIL SEAL
15. 131-62245A OIL PAN GASKET
16. 158-62245A FRONT CRANKSHAFT OIL SEAL
17. 161-62245A GASKET, LEFT CHAIN CASE,
18. 283-62245A OIL PUMP GASKET
19. 266-62245A OIL PICKUP TUBE GASKET
20. 130-62245A GASKET, OIL DRAIN PLUG GASKET,
Engine parts contact:
Email: EngineParts@HeavyEquipmentRestorationParts.com
Alternate email: engineparts2@gmail.com
Generac 2.6L GAS ENGINE 062245A 62245A
1. 62245-A ENGINE, 2.6 LITER GAS ENGINE, 2. 52233 CONNECTOR, OIL PRESSURE
3. 696-62245A SENDER, OIL PRESSURE SENDER
4. 650-62245A SWITCH, OIL PRESSURE SWITCH
5. 63204 ADAPTER, EXHAUST, 6. 63417 INTAKE MANIFOLD
341-62245A GASKET, INTAKE MANIFOLD GASKET
7. 62575 GASKET, THERMOSTAT HOUSING GASKET, 8. 340-62245A THERMOSTAT
9. 342-62245 UPPER THERMOSTAT HOUSING
10. 22129 LOCK WASHER
11. 42107 BOLT
12. 655-62245A SWITCH, TEMPERATURE SWITCH, 13. 657-62245A SENDER, TEMPERATURE SENDER,
14. 656-62245A SENSOR, COOLANT LEVEL SENSOR,
15. 39450 FITTING
16. 64063 SUPPORT
17. 64061 GOVERNOR
18. 411-62245A FAN, ENGINE COOLING FAN,
19. 62976 RADIATOR, ( not shown )
20. 62963 BOLT
21. 46526 WASHER
22. 22145 WASHER
23. 57642 BOLT
24. 22131 WASHER
25. 52859 NUT
26. 64069 DASH POT
27. 31596 NUT
28. 64064 SUPPORT
29. 64067 BRACKET
30. 410-62245A SPACER, FAN SPACER, 31. 47725 SPACER
32. 22097 WASHER
33. 36409 NUT
34. 64416 BOLT
35. 42914 BOLT
36. 34339 FITTING
37. 57058 BOLT
40. 57772 GASKET, OIL DRAIN
41. 57765 ADAPTER, OIL DRAIN
42. 57822 CLAMP
43. 57448 HOSE
44. 52858 NUT
45. 39287 BOLT
46. 63273 EXHAUST GASKET
47. 63275 SEAL RING, EXHAUST,
48. 46525 NUT
49. 39253 BOLT
50. 555-62245A NUT
51. 42574 ADAPTER, OIL PRESSURE,
52. 63463 FITTING
53. 40107 HOSE, ELBOW
54. 35472 CLAMP
55. 31919 PLUG
56. 50967 HOSE, COOLANT BYPASS HOSE, 57. 61696 BOLT
58. 49821 BOLT
59. 35467 NIPPLE
60. 25066 COUPLING, PIPE
61. 40080 V-BELT FOR GOVERNOR
62 22500-T SPACER
Heavy Equipment Restoration Parts LLC
4730 118th Ave
Fennville Michigan 49408 USA
Phone: 269 673 1638
Text: 269 760 8652
Fax: 269 673 7226
email: EngineParts@HeavyEquipmentRestorationParts.com
alternate email: EngineParts2@gmail.com
Website: www.HeavyEquipmentRestorationParts.com
62245A 062245-A
Generac Generator Engine Service Manual
with Parts Reference Numbers
62245A 2.6L Liter Gas Spark Ignited Inline four cylinder 062245A G2