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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
980
Messages
12.1K
Sub-forums
Sub-forums
Handlebars
Primary
Clutch
Starter
Wheels
Engine
Frame & Chassis
Brakes
Charging System
Forks
Carburetor
Electrical
Threads
980
Messages
12.1K
Clutch Lever
Aug 29, 2026
NEOHIOK9
EFI Topics
Electronic Fuel Injection issues
Threads
170
Messages
2.3K
Threads
170
Messages
2.3K
Rear cylinder switches off when hot.
May 25, 2026
SKOGDOG
Technical Bulletins and Recalls
Threads
122
Messages
1.3K
Threads
122
Messages
1.3K
2008 fuel pump
Jul 7, 2026
Jwooky
New Owner Necessities
What new owners need to keep their Dog's running strong!
Threads
28
Messages
568
Threads
28
Messages
568
2003 Mastiff service manual PDF
Jun 8, 2026
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
Clutch
Thursday at 10:22 PM
Race3119
Fluids!!
Threads
180
Messages
2.5K
Threads
180
Messages
2.5K
Primary problems.
Jun 8, 2026
PapaStein
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06 K9 Speedometer
skcchamp14
Dec 2, 2018
Replies
4
Views
2K
Dec 2, 2018
KaptinAmerika
Assistance Needed....
mjsk9
Oct 23, 2018
2
3
Replies
40
Views
7K
Nov 27, 2018
Axel
Changing the (imo) ugly convex stock primary on many BDMs
No H2O
Nov 9, 2018
2
Replies
36
Views
4K
Nov 23, 2018
rschubel1957
Pre 04 Thunderheart or 04 on up RIP upgrade, which do you recommend, and why?
No H2O
Oct 27, 2018
Replies
10
Views
2K
Nov 2, 2018
KaptinAmerika
starter engaging with bike OFF
toadstool
Oct 13, 2018
Replies
12
Views
2K
Oct 31, 2018
francoblay1
questio: starter prob
08bigdogk9
Oct 27, 2018
Replies
3
Views
752
Oct 28, 2018
what?
Bike died in mid ride, battery only a couple months old and on tinder overnight
No H2O
Oct 1, 2018
2
Replies
27
Views
3K
Oct 27, 2018
No H2O
Hello from Kansas
DaVexa13
Oct 25, 2018
Replies
2
Views
805
Oct 25, 2018
bigkelk9
F
S&S Dual Runner Install question
FLCRO
Oct 25, 2018
Replies
4
Views
961
Oct 25, 2018
PacoPetty
Thinderheart to ultima swap
brandon davis
Oct 20, 2018
Replies
2
Views
870
Oct 20, 2018
roadie1389
How can you tell if a BDM can accept a sissy bar?
No H2O
Oct 13, 2018
Replies
16
Views
1K
Oct 15, 2018
No H2O
What size is the handlebar bolt?
No H2O
Oct 12, 2018
Replies
3
Views
781
Oct 12, 2018
No H2O
Transmission
Jersey Big Mike
Oct 3, 2018
Replies
11
Views
2K
Oct 5, 2018
pknowles
Hello, New to the site and learning.....follow up
DaVexa13
Sep 30, 2018
Replies
12
Views
1K
Oct 4, 2018
RRRUFF
Hello everyone, new to the site and learning
DaVexa13
Sep 27, 2018
Replies
17
Views
1K
Oct 1, 2018
PacoPetty
K9 Electrical: Was the stock electrical good to go by 07 or still should be rewired?
No H2O
Sep 28, 2018
Replies
10
Views
958
Sep 30, 2018
SKOGDOG
New EHC
Dog 10
Jun 17, 2018
Replies
6
Views
2K
Sep 29, 2018
DracLopez
How to tell the difference between the K9 and the Chopper and why are the (used) K9s priced higher?
No H2O
Sep 21, 2018
Replies
15
Views
4K
Sep 24, 2018
EMILIO
turn signal voltage
shansel88
Sep 22, 2018
Replies
1
Views
724
Sep 24, 2018
Sven
S
Rubber in the rim
Kiwirider
Aug 12, 2018
2
Replies
34
Views
5K
Sep 23, 2018
PAUL NOBBS
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