MrJabber22: can't get my bike to start, the fuel valve is open, the choke is up, the
white lever on the carb where the fuel enters is up at 90 degrees, the idle
adjust screw is about halfway,...anyone have any ideas?
wahib dib: Can't get mine to start. When I try to start it, I will pedal then let go
of the clutch, and when I let go the bike keeps rolling for another meter
or two, and there's is no sound of the bike trying to start, any ideas?
Christian Woodruff: i haven't started the motor yet but i noticed that assembling the throttle
to the carburetor the cable was extremely tight. it doesn't seem to fit
right... is this normal? also i did the test for the spark plug but never
saw fire, how do i know its not the spark plug but the wire box?? HELP!!
thcassidy: unresolved problem... the system i received is totally seized... unable to
turn the engine sprocket freely or at all. and loosing the clutch cover
does nothing to resolve the matter...
Richard Rowlands: I am completely unable to unscrew the philips screw that locks the flower
nut. I've tried a couple days now trying to unscrew it and now its
stripped. Any advice?
Ben Donnelly: this is a bit off topic but, does clutch starting the engine harm it?
albert costello: if you`re confused about fuel to oil ratio, you can do what I did , go to
you`re local Honda shop and buy a measuring cup for 2 cycle engine oil ,
you can buy oil there too .
Joseph Johnson: hello just want to say thanks for the uploaded information..
i have a question i noticed that your clutch has a spring underneath the
clutch plate,do you need that spring for your clutch to work
properly?please do get back to me a.s.a.p. thank you.
KingCobraJFS: The wire for the throttle cable is stripping away trying to assemble it its
the wire that you put the springs on that turns the thing on top of wear
the chain sits its to turn twords the engine but the silver wiring that you
screw down is coming on ravled and the springs are being difficult to put
RockLobster2402: yeah got everything installed- and first time trying to start the bike the
chain breaks at the master link, so I bought a new Master link and
reinstalled the chain. When I tried to tried and engage the engine to start
the bike it just completely locked up.
Called bikeberry the guy was real nice he said to look at this video
my question is the engine is installed already and chain is on so do I have
to uninstall the chain to do this? I guess thats a really stupid question
since I just said it is locked up how would I get the chain out?
Joe Franco: Tnks man! Right to the point.
Pollo Loko: How do you take off the sprocket from the clutch? The videos on YouTube
only show you how to adjust it
jewish scientist: I just got my bicycle engine kit to run and I was running it at full speed
for about 2 min. When I was doing a tight turn I slowed down and the
engine turned off. I held the clutch to turn it back on but in the process
it became to stiff to turn. The engine was hot and I was holding the clutch
but it still would not spin. Would this fix my problem?
Joe Franco: Tnks man! Right to the point.
conker balderas: Hi could you tell me how to tighten the clutch because i can pedal freely
while clutch is on or off
Justin Carson: No one has made a video on a complete rebuild of a Grubee clutch yet.
There is an issue with the clutch on these engines. The adjust nut(not
the fine adjust nut) on the clutch shaft screws tighter and tighter against
the clutch spring until it completely compresses the spring rendering the
entire clutch(and engine) useless. Very poor design. 2 of the 3 engines I
own have done this. Again, I'm talking about the part of the clutch inside
the engine, not the fine adjust nut under the clutch cover. I have to
figure out a way to stop the adjust nut from tightening itself on the
threaded clutch shaft.
Ryan Marshall: Should you do this when u first buy the motor ?
freshi went scf: my clucth wont engage it is very loose every time i move the bike the
pitins move very easyley so it wont turn over properly any advice
andrew foster: can u do this with the engine mounted and built
Samuel Poe: I just purchased an 80cc engine and installed on to my bike. Everything is
working except the clutch. I can get the motor running but when i try to
stop at a stop sign or just stop, i pull in the clutch lever and the engine
noise increases dramatically. I have no choice but to push the kill switch.
I can't keep the motor running. Sounds like it will explode if i did. I
know it is not suppose to do that. It's suppose to keep the motor running
at a lower noise, then when you resume riding, you let the clutch lever
out. Do you need to peddle again to keep the motor running after resuming
the ride after leaving a stop sign? or is the 80cc motor capable of
resuming the ride after a stop at a stop sign without needing to peddle?
fatyfisherc: I just finished assembling my bike but when i tried to pedal it, it was
very difficult like the clutch was engaged even when I held the clutch
lever. So then I adjusted the clutch like in the video and now it spins
freely all the time and won't engage.
any suggestions +BikeBerrycom ?
J Danny Casillas: if I am replacing my square like clutch pads with new ones, which direction
do the new clutch pads go in? One side of my pads look checkered and the
other side is black......and what if the holes seem alittle too small for
the actual pads to fit in.? Is this common? and what do you suggest to make
the pads small enough to fit?
jmld69: Thanks that was really helpfull I was looking everywear for videos on how
to dismantle clutch and u answered my question
Jason Teasdale: Hi Bike Berry, I find your vids very helpful. I have built 5 of these
Grubee Skyhawk kits now, and sell them. The last 48 cc I did has a rattling
noise in the clutch area. Now I have heard this is "normal" sometimes the
pressure plate is out of round or something like that? I haven't opened it
up yet, but do you have any suggestions on what that rattling might be? the
nut loose maby? The engine and clutch work except the clutch will not
engage until the clutch lever is almost ALL the way out. On my 66cc it is
not like that. I will try and adjust it this weekend and see if anything is
loose in there, but your opinion would be greatly appretiated!
Pollo Loko: I have a 66 cc skyhawk and When I hold the clutch in, my bike doesn't move
how can I fix it?
Jose Cortese: the clutch handle is stickey
R. Beyer: thank you much
William Stark: My clutch is stuck stuck stuck. Those three prongs won't spin no matter how
long I bang on them. I'm afraid I'm going to break them.
Lang palmer: my clutch gear is rubbing on the bottom of the motor case WTF do i do?? i
tried this out of spite but no luck obviously is the gear grinding along
the bottom Plz help?!
pavel1809: let says if my motor is off and i ride my bike for 4 miles my cluch will
Dominic Suniga: Ok i just set mine up and when i try to pedal that engine tries to turn
over and wont let me pedal will doing this help
Mexside619: just adjust the screw on the side to let less air in
bikr1975: ohh yeah, i replaced the plug with a small engine type for honda. is there
any difference in resistive to non-resistive plugs as far as power goes?
the original dies and replaced it with a similar sized one. when i first
got it, it was like it was turbocharged. had lots of low end power. now,
all of a sudden, it bogs right down with no low end power and feels like it
wants to lock up if i try to get more speed. im using a 40:1 full synthetic
racing oil. no plug fouling. bad CDI????? help.
BikeBerrycom: It's locking up because the fuel ratio is incorrect. These engines require
a much richer fuel mix. I say flush your motor, and refuel it with a 24:1
ratio. If it's still in the break-in period, 16:1 or 18:1 should be the
wav5000kb: Weird background noises,turn up the volume an listen.
chappytk: You should make more videos. Concise and well edited. Thanks!
RockLobster2402: I bought a small Bike engine exactly like this- except it does not say
Skyhawk, I did everything you say to do, and I found the Spring in the
video at 1:39 (time) is missing. ----- where can I buy that Spring?Are they
universal? The Name on my box the bike came in says BGF "Boy Go Fast" if
that is any help. I got this back over the Summer and with the Hurricane
and other things,Am just now able to put it on--- Thanks.
BikeBerrycom: That's the first time I've heard of that problem. If it doesn't effect your
flower nut negatively, you may want to file down the clutch pin. Please do
so at your own discretion though, as we are not reliable for this advice.
PLEASE NOTE: do so ONLY if it doesn't affect the flower nut negatively, as
in, it causes the flower nut to sit and screw back on the clutch pin
rodney dikin: i've got the grubee skyhawk 66cc and i absolutely love it. i customized a
cannondale h300 and installed this motor kit. i used some of the parts that
came in the kit but did away with most of it and upgraded better parts. the
engine is fantastic. get rid of the sparkplug that comes with it. it's
crap. get a ngk or autolite. and your best friend is going to be loctite.
use it to the max. it will save you from loosing parts and keep your motor
secure. email me at firstname.lastname@example.org for more tips
steve thompson: man im glad i finnaly found out how to fix this thanks man
tibetoo7: hello.can u use this in a kart ?
BikeBerrycom: In all fairness, it's true that the 2-stroke engine kits or "china girls"
need fine tuning. I can't speak for most other stores, but we offer a 6
month parts exchange warranty. We understand how these engines work and
will work with you in making sure you get your parts to get your engine
Paraglidermx: All china girl motors are POS,,if you dont know how to work on 2
strokes,,dont buy one from anybody,,I have no problem buying them fro ebay
for 139 dollars,,just need to go over them and fine tune,,they all run
great with some TLC :)
BikeBerrycom: Power loss is generally due to the carburetor not being adjusted properly.
When you twist for more power, the carburetor is trying to feed more fuel
and air through a small jet.
BikeBerrycom: No problem, Alex. Glad it helped :)
ThePeoplepimp: This is trouble shooting not adjustment, but cool video...
shredderjoachim: Hey man here is my problem. I have tried putting the cover that goes on to
the sprocket on the side of the clutch that you were showing in the very
beginning of the video but the pin is blocking me from putting the cover
back on. I have tried taking the clutch cover off and the plate as well and
fiddling with some of the settings. I cant get the stupid cover back on
that you took off because the pin is seated way to far out of the housing.
I have checked for dirt and grime.. help please!!
mitzy162: Thanks for the help! My three prong thing was frozen :)
Cert: Building stuff is always in my family gene. My dad is a new york auto technician and taught me everything I need to know about cars. Now I sell car parts online to suppliment my income. So it does help when there's good guidance.