YAMAHA WOLVERINE UPGRADE
I have a 2016 Yamaha Wolverine
that I really like. It gets me down the
forest trails at a good pace just fine.
However, I’m not crazy about the
low half-doors. I’d like to get some
aftermarket full doors, but I haven’t
been able to find any company that
sells doors for the Wolverine. There
are many who have them for RZRs
and other UTVs. I realize that the
Wolverine might require an additional steel bar mount for the door
to latch to. Boss, do you know of any
UTV door-makers who could help me
out? Thanks for your time.
Well, George, both the Wolverine
and the Viking take the same doors.
Defender Cab has polycarbonate
doors here: http://defendercab.com/
now_available. Reports are that they
scratch easily though.
UTV Headquarters has full doors
with a metal frame and soft sides
that they claim will work with a hardtop and any windshield here: www.
sdetail/55900/125961. It is listed
for a Viking, but it should fit your
Wolverine too. Be aware that most
soft doors are rated “not trailerable”
by the respective manufacturers.
ONE OF THE FIRST
I have a 1985 Suzuki Quadrunner
LT250EF, and the exhaust pipe seems
to get too hot. It actually glows red.
When I pulled the spark plug and
looked at the tip, it was white. My
quad is hard to start, but it runs okay
after it warms up. I think it’s running
lean, though, but I don’t know for
sure or how to make it richer. I would
appreciate your input on this problem. Also, do you know of a way I
can get a free download on a shop
manual for my old quad? Thanks.
A glowing head pipe and a white
spark plug certainly indicate a lean
condition. If your quad starts and
runs okay, then I tend to believe the
needle jet or main jet is at fault. It
wouldn’t start well or run well if the
low-speed jet was plugged or lean.
Assuming you haven’t changed the
exhaust or jetting, then your carb
is not flowing enough fuel due to
dirt, rust and water inside the carb
or fuel tank. A cleaning would be
in order here. The other possibility,
given your quad’s age, is a rusted
muffler causing increased flow and
your lean condition. Replacement
is your best course here. Jetting for
the rusted-out muffler is not recom-
mended, because the rust doesn’t
just stop now; it will continue to
increase, and the exhaust will con-
tinue to flow more, and you will
have to increase the jetting again to
compensate. As to your “free” down-
load, this download covers all the
1985–1990 models: http://rapidshare
For $9.95 you can get just the 1985–
’ 86 models here: www.tradebit.com/
SUZUKI Z400 HEAD-SCRATCHER
I have a 2007 Suzuki Z400 that was
running well until a few days ago.
I was out riding, and it suddenly
lost power and died. This happened
another time before, and a mechanic
told me to clean the carb. I did, and
it ran fine until now. I tried cleaning
the carb again, but it made no difference this time. So, where should I go
from here? Thanks for your help.
Is there fuel in the float bowl?
Could the vent in the gas cap be
plugged, creating a vacuum in the
tank, preventing fuel from flowing
down to the carb? Turn your petcock
to “PRI” and see if that cures the
problem. If it does, then it would most
likely be the vacuum line. It might
also be the petcock’s filter screen.
Remove the petcock and clean the
screen. More than 400 owners have
reported plugged main jets and
By Winston “Boss” McKannick
main-jet air bleeds plugging. Check
the main jet and main air bleed (air
cleaner side) to make sure they’re
clean and not clogged. Blow aerosol
carb cleaner through the jet or port
and make sure it squirts out somewhere else! Protective goggles are
recommended here. Other things
(less likely) that could be at fault are
a heat-sensitive electrical component
like a spark plug, coil or CDI.
I’ve been reading your “Dialed In”
page every month for about 20 years.
I’d just like to say thanks for all of
the mechanical wisdom I’ve learned
from you. Also, I was wondering
what the strangest or funniest repair
job you’ve ever seen? When the guys
are sitting on a bench in your garage
swapping funny stories, what would
you have to crack everyone up?
Well, son, back in the day….
Actually, in the early days of three-and four-wheelers, there were a lot
of strange and funny things going
on. There was a bar near my shop
that had a one-mile run to a T.
Now this was the late 1980s when
250 Quadracers and 250Rs ruled.
Everybody would congregate at
the bar on a Friday night, and after
some liquid courage, they naturally
wanted to race the other predominate brand in the bar’s parking
lot. Everybody would fire up their
cold quads and race the one mile
to the T. The 250Rs usually won!
Why? See, the LT250R Quadracers
had bridged exhaust ports with no
water jacket behind the bridged
exhaust port. This strip of cylinder
would get red hot long before the
cold cylinder would, and hot metal
expands. It would catch the rings,
and the cylinder would seize up. So,
most Saturdays there was at least
one or more Quadracers that need-