Got a problem with your ATV?
Send your questions to Dirt Wheels
“Dialed In,” P.O. Box 957, Valencia,
CA 91380-9057. Our e-mail address
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By Winston “Boss” McKannick
I currently ride a 1987 Suzuki
Quadzilla 500. I have an extra
LT500R engine and lots of parts,
and would love to build another
Quadzilla from the ground up.
However, I don’t have an extra
LT500R frame. Could you give me
some advance on where I could find
one? Your help would be greatly
Start off local, with your dealer. He
should have a “bone yard” of sorts.
Next, check with the several ATV salvage companies advertising in the
back section of Dirt Wheels. You will
be amazed at what these guys carry.
GOOD TIP FROM READER
In the April 2015 issue, Chris
Tomlinson wrote to you about a
problem with his winch cables
breaking on his Polaris with a
Glacier II snowplow. I have a Polaris
with the same snowplow, and I’ve
had the same problem of break-
ing cables. To solve the problem,
I learned that you need to attach
a pulley to the plow, then run
the cable through the pulley and
attach it to the top bar of your front
bumper. With this set up I’ve had no
more problems with broken cables.
Can-Am offers a pulley kit for their
quads, which is a pulley and short
strap that mounts to the bumper (P/N
What you are doing by installing
the pulley is cutting the load on the
cable in half, because now there
are two cables lifting the Glacier II
snowplow. Thanks for the tip!
My buddy bought a freshly rebuilt
1998 Honda 450 Foreman 4x4. After
a couple of muddy trail rides, his
quad started smoking like a freight
train. There was no power loss, but
it smoked like crazy. It was also
spitting a small amount of oil from
the exhaust. We checked the oil,
and it was a milky gray color, so we
drained it, flushed out the motor and
put in fresh oil with a new oil filter.
ventional carburetor. I would start
by setting your #1 pilot circuit so you
have a stable idle when hot. I think
your off-idle flat spot is lean, and
you can’t “jet” that out with the
pilot circuit. On a carbu-
reted model, that is what
the accelerator pump
is for. Your accelerator
pump mode is mode
#2. Enter into the #2
accelerator pump mode
(push the “mode” button
twice), and then increase (richen)
the setting by pushing the “+” but-
ton once. Retest. Any improvement
warrants a still higher number until
you go too far and the flat spot gets
worse. Then drop back one setting.
Mode #3 is your main jet, and I don’t
think your problem has anything
to do with the main jet. Advanced
mode #4 controls when idle fuel is
delivered. Advanced mode #5 controls when fuel is delivered during
part throttle acceleration. Advanced
mode #6 controls when fuel is delivered during full-throttle acceleration.
There is a chance that #5 may need
to be adjusted, but I think your problem is a lack of fuel in the accelerator pump mode (#2). Be thankful you
don’t have to keep running back to
your dealer for a different-numbered
I own a 2008 Suzuki KingQuad 450,
and I’m looking for some aftermarket
shocks for both the front and rear.
So far I haven’t been able to locate
any for my machine. However, there
are shocks listed for the KingQuad
700/750. I would buy those for my 450
if I knew they will fit and are compatible. Do you know? I would appreciate any help you can offer.
For the front of your KingQuad
450, a pair of take-off YFZ450 front
shocks will fit with just a bit of work
on the bottom of the upper mounts.
What you gain is an adjustable ride
with 2 inches of more wheel travel
with no CV joint binding. In the rear,
the 15 3/4-inch YFZ shocks are a bit
short because OEM is 17 inches eye
to eye. Rear KingQuad 750 shocks do
bolt up and work correctly. ❏
After running it, the new oil had the
right color. We checked all the vent
tubes and came up with nothing.
What caused his quad to start smoking like it did? Is there anything else
we should check and fix?
Sounds to me like the Foreman
got water into the crankcase, and
this raised the level of the oil in the
crankcase. This increased oil level
overpowered the crankcase breather, causing the oil/water mixture to
be blown into the airbox where it
was then ingested into the combustion chamber where it was burned.
This caused the smoking and filled
the exhaust with unburnt oil. Water-contaminated oil has little lubrication
value. It certainly didn’t help the
fresh engine that wasn’t even broken
in yet. I would do a wet/dry compression test to see if there was any pis-ton/ring/cylinder damage caused by
the reduced lubrication of the water/
After buying a 2014 YFZ450R, I
noticed right off that there was a
slight hesitation just past idle. I broke
it in to specs and then added a K&N
air filter, DMC mid-pipe and muffler,
and also DMC’s fuel programmer.
I confirmed that it was set to my
engine’s configuration, but now it
has a full-blown dead spot just off
idle. You have to give it just the right
amount of throttle or the engine
dies. I’ve adjusted the #1 idle circuit
leaner and richer with no improvement. There are other adjustments
( 2 through 6), but DMC did not have
recommendations for the advanced
settings. I’m a long-time subscriber
and was hoping you could help.
If you understand basic carburetor
jetting circuits, then the DMC fuel
programmer is easy to understand.
They have broken down the various
modes to mimic the “jets” of a con-