How To Adjust Your Clutch For 48cc 50cc 66cc 80cc 2-Stroke Motorized Bike By BikeBerrycom




What do you think about this video?

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?

Blake Mager: My clutch is very tight and hard to engage and can't be engaged by the wire, is this going to fix my problem?

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 .

vDaco: this is a bit off topic but, does clutch starting the engine harm it?

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.

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

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.

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 back on

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 ?

Joe Franco: Tnks man! Right to the point.

Cadet Hassan: 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?

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?

conker balderas: Hi could you tell me how to tighten the clutch because i can pedal freely while clutch is on or off

Miguel Hernandez: This was exactly what I needed! Thanks!!

Joe Franco: Tnks man! Right to the point.

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?

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?

Pollo Loko: How do you take off the sprocket from the clutch? The videos on YouTube only show you how to adjust it 

R. Beyer: thank you much

andrew foster: can u do this with the engine mounted and built

jmld69: Thanks that was really helpfull I was looking everywear for videos on how to dismantle clutch and u answered my question

Jose Cortese: the clutch handle is stickey 

Pollo Loko: How do you take off the gear *****

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.

Ryan Marshall: Should you do this when u first buy the motor ? 

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?!

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

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?

pavel1809: let says if my motor is off and i ride my bike for 4 miles my cluch will get bad

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! 

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 fuel mixture.

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 improperly.

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 rgd62@live.com 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 running smooth.

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 :)

Matthew Schurter: Nice vid Guys I have also had two engines recently a 48cc GT2B and 66ccGT5 where the plate was just stuck to the clutch pads and used a small slotted screw driver to unstick it by gently prying around the radius of the plate .

Jose Jimenez: What if clutch is not un ingadgin

Sam McDowell: THANKYOU

Rating:
How To Adjust Your Clutch for 48cc 50cc 66cc 80cc 2-Stroke Motorized Bike by BikeBerrycom 4.8 out of 5

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How To Adjust Your Clutch for 48cc 50cc 66cc 80cc 2-Stroke Motorized Bike by BikeBerrycom