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Big Dog Motorcycles
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Technical
Technical related discussions.
How-To
Member submitted articles on How-To work on your Big Dog.
Threads
967
Messages
12.1K
Sub-forums
Sub-forums
Handlebars
Primary
Clutch
Starter
Wheels
Engine
Frame & Chassis
Brakes
Charging System
Forks
Carburetor
Electrical
Threads
967
Messages
12.1K
0
EHC
May 19, 2026
08 MUTT
EFI Topics
Electronic Fuel Injection issues
Threads
170
Messages
2.3K
Threads
170
Messages
2.3K
Rear cylinder switches off when hot.
Monday at 7:54 PM
SKOGDOG
Technical Bulletins and Recalls
Threads
121
Messages
1.3K
Threads
121
Messages
1.3K
I have a few questions about the Dakota digital BD-140
Jun 11, 2024
Jersey Big Mike
New Owner Necessities
What new owners need to keep their Dog's running strong!
Threads
28
Messages
566
Threads
28
Messages
566
2003 Mastiff service manual PDF
Aug 22, 2025
HMAN
Help Wanted
No, not a job offer, if you're having trouble, ask for help here!
Threads
3.1K
Messages
36.2K
Threads
3.1K
Messages
36.2K
front forks problem
Apr 24, 2026
Steven Proctor
Fluids!!
Threads
179
Messages
2.5K
Threads
179
Messages
2.5K
U
Primary gasket
Sep 4, 2025
Underdog
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2005 BDM Chopper: Wheel Alternatives
japelfrey
Mar 14, 2022
Replies
4
Views
905
Mar 14, 2022
japelfrey
Date codes
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Feb 28, 2022
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1K
Feb 28, 2022
speedball jr.
Intake manifold K9 engine GE01919
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Jan 29, 2022
Replies
13
Views
2K
Feb 25, 2022
pknowles
Before I spend a fortune on a new EFI Controller....
Chuck3d
Feb 12, 2022
2
Replies
22
Views
3K
Feb 19, 2022
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C
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Feb 13, 2022
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2
Views
967
Feb 16, 2022
rpols7
C
Primary fluid
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Feb 3, 2022
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Views
1K
Feb 6, 2022
Sven
S
Mastiff 2008 EFI Head Gasket leak.
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Feb 5, 2022
Replies
14
Views
2K
Feb 6, 2022
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C
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2K
Feb 2, 2022
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Fuel tank cap and flange
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Jan 31, 2022
Replies
17
Views
2K
Feb 2, 2022
SBMike
K9 starter
pknowles
Jan 31, 2022
Replies
3
Views
739
Feb 1, 2022
pknowles
Cracker bolds head.
OlivaRider
Jan 29, 2022
Replies
4
Views
823
Jan 29, 2022
OlivaRider
Service Manuals to do a full restoration.
andrelouro88
Jan 17, 2022
Replies
3
Views
1K
Jan 28, 2022
jarnett
F
Starting issue
fsharrisjr
Nov 12, 2021
2
Replies
21
Views
4K
Jan 26, 2022
Mikeinjersey
T
Engine swap 99 bulldo to 03 mastiff
Top dog
Jan 8, 2022
Replies
17
Views
2K
Jan 26, 2022
Mickmorris
A
Thunder Heart micro unit
Army007
Jan 17, 2022
Replies
13
Views
1K
Jan 24, 2022
Mikeinjersey
C
Open Primary vs. Closed Primary
Cecil
Apr 16, 2012
3
4
5
Replies
84
Views
20K
Jan 24, 2022
Army007
A
Neutral Light not working
busa03
Mar 24, 2009
Replies
19
Views
7K
Jan 23, 2022
Mickmorris
Cranking compression test
andrelouro88
Jan 19, 2022
Replies
6
Views
671
Jan 19, 2022
Jwooky
Anyone know where to pick up 2 Primary Engine Screws?
Chuck3d
Jan 7, 2022
Replies
15
Views
1K
Jan 15, 2022
Jwooky
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