You can write to Sarge at Troubleshooter, ATV Action, P.O. Box 957, Valencia, CA 91380-9057 or via e-mail: firstname.lastname@example.org. When
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By Sarge McCoy
WHEN SHOULD I FLASH?
My Polaris dealer told me that if I
purchase a new ECM, it is ready to go
because it is the correct part number. I
thought that you had to flash the ECM
before installation or it would be in
limp mode. I suspect that some of my
operating problems are based on a bad
ECM. I wanted to purchase the Digital
Wrench software to do my own tuning,
but they said it was for dealers only.
Your advice would be appreciated.
Colorado Springs, Colorado
Boot, you need to stop listening to
obviously bad intel. When raw recruits
start questioning superiors, there is
a problem. Of course a new ECM
must be flashed when new. Dealers
purchase blank ECMs, and they must
be programmed to your machine by
Digital Wrench. It is unlikely you can
obtain Digital Wrench from Polaris. It
is a diagnostic tool for their dealers
only. There is a group pushing the
states for a right-to-repair law so
manufacturers would have to sell all
necessary tools and software to work
on their machines. See www.repair.org
for more information. Even if you could
acquire the Digital Wrench software you
want to use, you would have to have
access to the Polaris Dealers IntraNet
(internal to Polaris dealers only) to get
an activation code that lets you make
any ECU mods. Without that activation
code, you can only do monitoring and
no modifications. They have thought
of everything to keep that diagnostic
function for dealers only. Sorry, Boot, I
HAVE YOU EVER
HEARD OF A LINHAI
I own a Linhai 400 Bighorn
UTV. Do you know anything
about them? It drives fine,
but it’s difficult to start, hot
or cold, and it will not idle.
When I turn the key to start,
there is sort of a whine in the
starter for about 2–3 seconds,
and then the engine starts to
turn over. It has to turn over
for several seconds with full
choke on (even after it’s warm)
and then finally fires. When I increase
the idle speed, it idles too fast to put
in gear without grinding the gears.
Basically, it idles poorly and is hard to
start. Can you help me, Sarge?
Private Mackey, of course I know
about them. The Linhai is primarily
sold in Canada. The company has
a partnership with Yamaha, and
its Zooters are simple, basic utility
machines that work quite well. Your
machine produces 28 horsepower.
Either you have really bad gas or the
jets are plugged in the carburetor. To
start working on your Zooter, I suggest
you download the factory service
manual here: www.quadcrazy.com/
Refer to Section 3. 12, P3-64, for
carburetor disassembly. Remove the
passenger seat to gain access to the
CV-type carburetor. P3-4 has the
adjustment settings. P3-46 has the
information on your starter clutch. It
sounds like yours is sticking and then
finally engaging. You may have to take
your Zooter to a dealer, because you
will need a flywheel puller to get the
flywheel off. If you do it yourself, test
the starter clutch by inserting the starter
gear into the flywheel. Turning the gear
counterclockwise, it should spin freely.
Turn the gear clockwise and the gear
should lock up tight. It’s possible that
just removing the starter clutch and
cleaning and re-lubing it may restore
correct operation. Twenty-five sit-ups,
WILL SITTING MAKE YOU
I just got a 1984 Honda Big Red 200
three-wheeler from a yard sale and it
hasn’t been run in about three years.
I got it started and rode it around for
a minute. When riding it, it smokes a
lot and also only stays running with
the choke on. How do I clean the
carburetor? And, what else do I do?
Fairfield, New York
Well, Private Stand-Down, I am
actually impressed you were able to get
the three-year-old “semi-liquid varnish”
to even fire! Smoking could very well be
the old fuel, and running with the choke
on will create some smoke. Try some
new fuel and see what happens. That
is, flush out the fuel tank and clean the
carburetor per the Honda factory service
manual available here: https://drive
sharing. Even after a good, thorough
cleaning, those little Keihins tended
to plug up their air-bleed holes. I
recommend replacing the carburetor.
Now, before you get all upset with
Sarge because I told you to requisition
an unobtainable part (Honda has
discontinued that part number), I will tell
you that there are new carbs available
on eBay, as well as replicas from Everest
Parts Supplies (www.everestparts
When you have the tank off and the fuel
dumped out, take a flashlight and check
the bottom inside seams of the tank.
That is where water always collected,
and the tank will rust out there. Let the
empty tank dry thoroughly in the sun
to remove all traces of water before
reinstalling. If there is rust, I would
suggest de-rusting the tank and sealing
it with the POR- 15 Cycle Tank repair kit.
It is available from Amazon here: www.
And, don’t forget to change the oil
with 10W- 40. Also, check for mice in
the airbox. If you find any, think dinner!
Laugh, Boot! Only 25 push-ups, Boot,
because I am still impressed you got
that old Zooter running at all on varnish!