Generators Manuals, diagrams, parts lists & troubleshooting guides by make and model. Back to Top
Onan Generators

In order to determine what manuals are required for your Onan generator, you have to know what model (i.e. 4.0BF) and Spec number (i.e. B) you have. The information is contained on the ID plate attached to the generator and is decoded as shown below.


Tech Bulletin - Misc Electrical Tables & Information (T-001)
Tech Bulletin - Installation of GenSets for RVs (T-012)
Tech Bulletin - Rating Factors for Electric GenSets (T-017)
PDF (T-001/T-012/T-017)

Onan RV Generator Handbook

Mobile Electric Plant General Installation Guide (1972)

For manuals below that web links were not provided, try EBAY, PER, or Cummins Onan.

One of the best places for maintenance and troubleshooting information is SmokStack.com.
Model Spec Operators
Manual
Parts
Manual
Engine
Service
Manual
Generator
Service
Manual
Installation
Manual
AJ (RV)

5.5HP Cast Iron Engine
Available Sizes:
0.8 to 2.5KW
2.7KW - 20.8 Amps; 147lbs
3.0KW - 160lbs
Spec Sheet

0.8 - 2.5KW A-P 924-0121 924-0221 (6.4Mb)

924-0310

924-0220
924-0502 ---------
2.7KW K-N 924-0120 924-0611
3.0KW P-S 924-0122 924-0222
BF (RV)

8.5HP Aluminum Engine
Available Sizes:
4.0KW - 33.4 Amps; 217lbs
Spec Sheet
A-D 965-0120 965-0220 900-0337 ---------
BF Power Drawer

8.5HP Aluminum Engine
Available Sizes:
4KW (33.4 Amps)
(Common in GMC Motorhomes)

---- 965-0315 965-0515 ---------
A --------- --------- 965-0250 900-0196 ---------
Model Spec Operators
Manual
Parts
Manual
Engine
Service
Manual
Generator
Service
Manual
Installation
Manual
BFA (RV)

8.5HP Aluminum Engine
Available Sizes:
4KW (33.4 Amps); 235lbs

A-D 965-0122 965-0222 900-0337 965-0612
BGA (RV)

10HP Aluminum Engine
Available Sizes:
5KW (41.6 Amps); 285lbs

A-D 965-0121 965-0221 900-0337 965-0611
BGE (Gas) BGEL (Propane)
Emerald I


10.3HP Aluminum Engine
Available Sizes:
4KW (33.4 Amps); 216lbs

BGE A-E
BGEL B-D
965-0130 965-0232 965-0530 965-0630
BGE F-L
BGEL E
965-0128 965-0231 965-0528 965-0628
BGE M-P 965-0176
Model Spec Operators
Manual
Parts
Manual
Engine
Service
Manual
Generator
Service
Manual
Installation
Manual
BGM
Marquis


10.3HP Aluminum Engine
Available Sizes:
5.5KW - 45.8 Amps; 258lbs

A-E 965-0131 965-0267 965-0531B 965-0631
F 965-0136
CCK (RV)

10HP Cast Iron Engine
Available Sizes:
4.0KW - 33.4 Amps; 290lbs
5.0KW - 41.6 Amps; 315lbs
Spec Sheet

A-Q 927-0310 927-0500 (5.3Mb) ---------
R-U 927-0120 927-0220 927-0754 900-0196 ---------
CCK

10HP Cast Iron Engine
Available Sizes:
4.0KW - 33.4 Amps; 290lbs
5.0KW - 41.6 Amps; 315lbs

---- 927-0300 900-0196 ---------
R-V 927-0122 927-0222 927-0754 900-0196 ---------
Model Spec Operators
Manual
Parts
Manual
Engine
Service
Manual
Generator
Service
Manual
Installation
Manual
KV
Microlite


7HP Aluminum Engine
Available Sizes:
2.8KW (23.3 Amps); 113lbs
Spec Sheet

A-B 981-0129 981-0238G 981-0506 981-0604
C-D 981-0136 981-0518E 981-0604
E-K 981-0153C
KY
Microlite


9.5HP Aluminum Engine
Available Sizes:
4.0KW (33.3 Amps); 172lbs
Spec Sheet

A 981-0139C 981-0246B 981-0503 981-0627
B-C 981-0607
D-H 981-0154
J-K 981-0159D 981-0530C 981-0621
LK (RV)

5HP Cast Iron Engine
Available Sizes:
2.5KW (20.8 Amps)
Spec Sheet

A-L 930-0310 930-0220 900-0196 ---------
M 930-0120
Model Spec Operators
Manual
Parts
Manual
Engine
Service
Manual
Generator
Service
Manual
Installation
Manual
NH (RV)

14HP Aluminum Engine
Available Sizes:
6.5KW (54.2 Amps); 305lbs
Spec Sheet

A-H 940-0121 940-0221 940-0501 ---------
J-R 940-0222 940-0751 900-0337 940-0622
NH Power Drawer

14HP Aluminum Engine
Available Sizes:
6KW (50.0 Amps)
(Common in GMC Motorhomes)

A 940-0315 940-0515

900-0196
---------
NHE (Gas) NHEL (Propane)
Emerald III


14HP Aluminum Engine
Available Sizes:
6.5KW (54.2 Amps); 230lbs

NHE/NHEL
A-C
940-0122 940-0228B 940-0502 940-0622
NHE D-L
NHEL D-P
965-0128 965-0528 965-0628
NHE M-P 965-0176
Model Spec Operators
Manual
Parts
Manual
Engine
Service
Manual
Generator
Service
Manual
Installation
Manual
NHM
Marquis


14HP Aluminum Engine
Available Sizes:
7.0KW - 56.7 Amps; 272lbs

A-E 965-0131 940-0230 965-0531B 965-0631
F 965-0136
G-H 965-0138 965-0633


Kohler Generators


Model Operators
Manual
Parts
Manual
Engine
Service
Manual
Generator
Service
Manual
Installation
Manual
3.5CM21/3.5CM61

K181QS Engine
--------- --------- TP-2379
K181 Service
TP-5014 TP-5005
4CM21

K321 14HP Engine
Single Cylinder
--------- TP-1017 TP-1346
K321 Owners


TP-2379
K321 Service
TP-1040 ---------
4CKM

M18 8.9HP Engine
Twin Cylinder
--------- TP-5395
K181 Service
TP-5394 ---------
4.5CM21/4.5CM61

K341QS 16HP Engine
Single Cylinder
--------- --------- TP-1346
K321 Owners


TP-2379
K321 Service
TP-5014 TP-5005
4.5CKM21

KT17 Engine
Twin Cylinder
--------- TP-5146

TP-5060
Power Boost


TT-690
Exhaust Kit
TP-2043A TP-5206
5CKM

M20 9.5HP Engine
Twin Cylinder
--------- TP-5395
K181 Service
TP-5394 ---------
5.5CM21/5.5CM61

K582QS Engine
--------- TP-1184
K321 Owners


TP-5014 TP-5005
7CM21/7CM61

K582QS Engine
TP-5022
7CKM21/7CKM22

K582 Engine
TP-5347 --------- TP-5347